Resource Allocation Optimization for Device-to- Device Communication Underlaying Cellular Networks

Size: px
Start display at page:

Download "Resource Allocation Optimization for Device-to- Device Communication Underlaying Cellular Networks"

Transcription

1 Resource Allocaton Optmzaton for Devce-to- Devce Communcaton Underlayng Cellular Networks Bn Wang, L Chen, Xaohang Chen, Xn Zhang, and Dacheng Yang Wreless Theores and Technologes (WT&T) Bejng Unversty of Posts and Telecommuncatons (BUPT) Bejng, 1876, Chna Emal: wangbnfgb@gmal.com, albupt@gmal.com Abstract Devce-to-Devce (D2D) communcaton wll become an mportant technology n future networks wth the ncrease of the requrements of local communcaton servces. The nterference between cellular communcaton and D2D communcaton can be coordnated by proper power control and resource allocaton. In ths paper, we analyze the resource allocaton methods for D2D communcaton underlayng cellular networks. A novel resource allocaton method that D2D can reuse the resources of more than one cellular user s proposed. After that, we dscuss the selecton of the optmal resource allocaton method from the proposed method and the conventonal methods. Fnally, the performance of dfferent methods s evaluated through numercal smulaton. The smulaton results show that the proposed method s the optmal resource allocaton method when the D2D par locates at the most part of the cell area n both uplnk and downlnk. The proposed method can mprove the sum throughput of cellular communcaton and D2D communcaton sgnfcantly. Keywords-Devce-to-Devce (D2D), resource allocaton, cellular networks, spectral effcency, energy effcency. I. INTRODUCTION Wth the applcaton of dfferent knds of multmeda servces, such as moble TV, vdeo phone, etc. there s an ncreasng requrement for hgher data rate transmsson. But the spectrum below 5 GHz s already congested. The spectrum whch s allocated to moble communcaton systems must be used effcently to meet the requrement of hgh data rate. 3GPP [1] proposes that the peak data rate wll acheve downlnk (DL) 1Mbps and uplnk (UL) 5Mbps n Long Term Evoluton (LTE) system. In order to fulfll the requrement of data rate, LTE adopts some advanced technology, e.g. MIMO, COMP, and relay, whch can ncrease the spectral effcency. There s also an ncreasng requrement for local communcaton, such as games between moble phones, vdeo sharng, and nformaton broadcast n hot pont area lke market. Machne to Machne [2] communcaton n small dstance n the Internet of Thngs also becomes a hot topc, whch s a local communcaton technology. The Devce-to-Devce (D2D) communcaton descrbed n [3] can ncrease system throughput by reusng the resource of the cellular user. The nterference between cellular communcaton and D2D communcaton can be coordnated by proper power control and resource allocaton. The D2D communcaton reduces the transmt power of termnal, whch ncreases the workng tme of termnal and mproves the energy effcency. The D2D communcaton can also decrease the load of base staton (BS) va drect transportaton. Besdes, the D2D communcaton has the advantage that lcensed spectrum s allocated to local communcaton. Lcensed spectrum can guarantee a planned envronment nstead of an uncoordnated one. D2D needs new communcaton mechansms, because of the dfference wth the conventonal cellular communcaton. In [4], the mechansms for D2D communcaton sesson setup and management nvolvng procedures n the LTE System Archtecture Evoluton are proposed. The BS s capable of coordnatng the nterference between cellular communcaton and D2D communcaton by proper power control and resource allocaton wth the channel state nformaton (CSI) of all nvolved lnks. In [5], a resource allocaton method that can mnmze the system nterference has been proposed, there were N cellular users and N D2D pars, and one D2D par reused the resource of only one cellular user n the system model. In [6] they dscussed three D2D resource allocaton methods and the power optmzaton when there was only one cellular user and one D2D par. In [7] they dscussed the mode selecton method on the bass of [6]. Two mechansms were proposed to coordnate the mutual nterference between cellular communcaton and D2D subsystems n [8]. In [9] tme hoppng (TH) based rado resource allocaton schemes amng to mprove the robustness of the hybrd network were proposed. However, n all of these references, one D2D par reused the resource of only one cellular user whenever there was one or more cellular user n the system. In actual networks, cellular users are more than D2D pars generally, so the spectrum s not used effcently when one D2D par reuses the resource of only one cellular user. In ths paper, we propose a resource allocaton method when there are more than one cellular user n the system. One D2D par can reuse the resources of more than one cellular user. The proposed method can ncrease the data rate of D2D communcaton and the spectrum effcency wth gvng prorty to the cellular user. After that, we apply the proposed /11/$ IEEE

2 method to resource allocaton optmzaton for D2D communcaton underlayng cellular networks. We present the mprovement of sum throughput of cellular communcaton and D2D communcaton by usng the proposed method compared wth the method that one D2D par reuses the resource of only one cellular user. The rest of ths paper s organzed as follows. Secton II descrbes the system model of D2D communcaton underlayng cellular networks. The algorthm used n the proposed resource allocaton method s dscussed n Secton III. The algorthm for resource allocaton optmzaton s also presented n ths secton. Secton IV presents and dscusses the numercal results. Fnally, concluson s drawn n Secton V. II. SYSTEM MODEL The system model ncludes a sngle cell envronment as llustrated n Fg. 1, where N cellular users are R far away from the BS. We assume there s one D2D par shares the avalable rado resources wth those N cellular users. Smlar analyss can be used for the scenaro wth more than one D2D par. The dstances between the BS and both of the D2D users are D. The dstance between the two D2D users s L. UE 3 R BS UE 1 D R D L UE n UE 2 Fgure 1. System model of D2D communcaton underlayng cellular networks. We assume that the BS has the CSI of all nvolved lnks. The avalable resources are allocated to the cellular users and the D2D par based on the CSI. We propose a novel resource allocaton method that allows the D2D par reuses the resources of more than one cellular user, whch can ncrease the sum throughput of cellular communcaton and D2D communcaton. Thus, there are four resource allocaton methods n D2D communcaton underlayng cellular networks, the frst three methods are descrbed n [6], and there are only one cellular user and one D2D par n ther system model. The last one s proposed by us. Cellular mode: The D2D users could not communcate drectly. They communcate wth each other through the BS lke the cellular users. The resources whch are shared by the D2D par and cellular users are dvded nto N+2 parts unformly, and every user uses one part of them n ths mode. Dedcated resource mode: The D2D users communcate wth each other wth dedcated resource. There s no nterference between cellular communcaton and D2D communcaton snce ther resources are orthogonal. There are N+1 orthogonal transmsson lnks at ths tme. The resources whch are shared by the D2D par and cellular users are dvded nto N+1 parts unformly, and the D2D par uses one part of them n ths mode. Reusng the resource of only one cellular user: The D2D par reuses the resource of only one cellular user who ncurs the smallest nterference between them. The resources whch are shared by the D2D par and cellular users are dvded nto N parts unformly, and every cellular user uses one part of them n ths method. The D2D par reuses the resource of one of the users. Reusng the resources of more than one cellular user: Wth guaranteeng a mnmum transmsson data rate of the cellular users, the D2D par can reuse the resources of more than one cellular user. The resources whch are shared by the D2D par and cellular users are dvded nto N parts unformly, and every cellular user uses one part of them n ths method. The D2D par reuses the resources of some of the users. In the cellular and the dedcated mode, both the cellular users and the D2D par can use the maxmum transmt power to get the best system performance, because they do not nterfere wth each other wth orthogonal resource. However, the BS should control the nterference between cellular communcaton and D2D communcaton by proper power control and resource allocaton when D2D reuses the resources of one or some cellular users. When D2D reuses the resources of cellular user, we gve prorty to the cellular user by guaranteeng a mnmum transmsson data rate, whch can be acheved at an SINR of γ cl. We also assume a mnmum transmsson data rate of D2D whch s acheved at an SINR of γ dl when D2D reuses the resource of one cellular user, otherwse D2D do not reuse the resource of ths user. We assume an upper lmt on the data rate based on the hghest modulaton and codng scheme (MCS), whch can be acheved at an SINR hgher than the target SINR γ h. III. RESOURCE ALLOCATION ALGORITHM In ths secton, we study the sum throughput of cellular communcaton and D2D communcaton under dfferent resource allocaton methods, based on whch, the optmal resource allocaton method s analyzed. Accordng to the system model and resource allocaton methods descrbed n Secton II, by applyng the Shannon capacty formula [1], the sum throughput of cellular communcaton and D2D communcaton of the four methods can be expressed as:

3 1 N S 1 mn( Sm, Sn) Rcell = log 1 2(1 + ) + log 2(1 + ) (1) = N + 2 N N + 2 N 1 N S 1 Smn Rded= log 1 2(1 + ) + log 2(1 + ) (2) = N + 1 N N + 1 N 1 N S 1 Sk Rre _1 = log 1, 2(1 + ) + log 2(1 + ) = k N N N Idck + N (3) 1 S log 2 (1 mn + + ) N Icdk + N 1 N S Rre _ n = log 1,,..., 2(1 + ) = j k N N 1 S j S log 2 ((1 )(1 mn )) N Idcj + N Icdj + N (4) 1 Sk Smn log 2 ((1 + )(1 + )) N I + N I + N dck cdk where S denotes the receved power of the lnk between BS and UE, the recever s BS n UL or UE n DL. S mn denotes the receved power of the lnk between UE m and UE n. I dcj denotes the nterference receved by BS n UL or UE j n DL from the D2D communcaton when D2D reuses the resource of UE j. I cdj denotes the nterference receved by the D2D par from cellular communcaton when D2D reuses the resource of UE j. N s the thermal nose power. The formulas are adapted for both UL and DL resource reusng. A. Reusng the Resource of Only One Cellular User By applyng the Shannon capacty formula [1], the data rate of UE wthout resource reusng s depcted as follows:. Cc () = log(1 2 + ) (5) N The sum throughput of cellular communcaton and D2D communcaton when they use the same resource s calculated as follows:. Pd. gd Ccd (, ) = log 2(1 + ) + log 2(1 + ) (6) Pd. gdc + N P. gcd + N Wth gvng prorty to the cellular user, D2D wll reuse the resource of one user, whch can be determned by: k = arg max{ C( c, d) C( c)} j (7) where j { : γ η γ, γ η γ } cl c h dl d h. Pd. gd where η c =, η d =, P and g denote Pd. gdc + N. cd + N the transmt power and channel gan of the lnk between BS and UE, respectvely. P d and g d denote the transmt power and channel gan of the D2D lnk, respectvely. g cd and g dc denote the channel gan of the nterference lnk from the cellular communcaton to the D2D communcaton and that from the D2D communcaton to the cellular communcaton, respectvely. B. Reusng the Resources of More Than One Cellular User Wth guaranteeng a mnmum transmsson data rate of cellular users, the D2D par can reuse the resources of more than one cellular user to ncrease the data rate. Wth reusng the same resources, the SINR of the cellular communcaton should be hgher than γ cl, and the SINR of D2D communcaton should be hgher than γ dl. An SINR hgher than γ h does not ncrease the sum throughput because of the restrcton of the hghest MCS. D2D wll reuse the resources of some users, whch can be determned by: k {: C(, c d) C() c >, γ η γ, γ η γ } (8) cl c h dl d h We can see that the resource reusng method wll ncrease the sum throughput of cellular communcaton and D2D communcaton, because D2D reuse the resources of cellular users only f the sum throughput can be ncreased wth resource reusng as shown n (8). C. Resource Allocaton Optmzaton The BS allocates the resources to the cellular users and the D2D par wth the CSI of all nvolved lnks. Wth gvng prorty to the cellular user, the optmal resource allocaton method s the one that can lead to the hghest sum throughput of cellular communcaton and D2D communcaton, whch can be expressed as follows: R = max( R, R, R, R ) (9) max cell ded re _1 re _ n Ths s the optmal resource allocaton method n D2D communcaton underlayng cellular networks. The optmal resource allocaton method s adapted for both UL and DL resource reusng. Wth the CSI of all nvolved lnks, the BS can maxmze the sum system throughput by usng the optmal resource allocaton method whenever how many cellular users there are and how they are dstrbuted n the cell. IV. NUMERICAL SIMULATION In ths secton, we resort to the numercal smulaton to evaluate the performance of the optmal resource allocaton method selecton and the sum throughput performance of the proposed resource allocaton method presented n Secton III. We consder a normalzed crcular cell (Radus = 1). The sngle-slope path loss model Pd ( ) = Pd ( ) d α s used n the smulaton, where Pd ( ) s the receved power at the dstance d from the transmtter, Pd ( ) s the receved power at reference dstance of d, and α s the path loss exponent. We assume α = 4 for all the lnks. Pd ( ) s normalzed to the transmt power snce we consder a normalzed cellular cell. The transmt power and N are both normalzed so that the SINR of cellular communcaton s db at the cell edge wthout resource reusng. We assume γ cl =db, γ dl =-1dB, γ h =2dB [6] n both UL and DL. The sum of transmt power and antenna gan of BS s

4 25dB hgher than that of the cellular user. We assume that the number of cellular users N s 6. The dstance between BS and all the cellular users are R. The dstance between BS and both D2D users are D. The D2D users are L far away from each other. D2D can reuse UL resources or DL resources of the cellular network. We wll dscuss both DL and UL separately, whch means that D2D reuses DL and UL resources, respectvely. We consder the relatonshp between the optmal resource allocaton method selecton and the locaton of the transmtter of D2D n DL or the locaton of the recever of D2D n UL n the followng smulaton. The transmt power of D2D communcaton when DL resources are reused s larger than the transmt power when UL resources are reused because the transmtter s the BS n DL, whch has hgher transmt power. A. DL Smulaton The maxmal transmt power of D2D communcaton s the same as cellular users when D2D reuses DL resources. The BS can reduce the nterference between cellular communcaton and D2D communcaton by resource allocaton and power control. We consder two scenaros: the one s that the cellular users are unformly dstrbuted n the cell; the other s that the cellular users congregate n some area of the cell. The performance of the optmal resource allocaton method selecton and the sum throughput performance of the proposed resource allocaton method wll be evaluated. We assume R=.6, L=.2. The transmtter of D2D s D far away from the BS, the recever of D2D s D far away from the BS f D>L/2 or L-D far away from the BS f D<L/2. Fg. 2(a) llustrates the selecton results of the optmal resource allocaton method when the transmtter of D2D s dstrbuted n dfferent place n the cell. The color ndcates the optmal resource allocaton method when the transmtter of D2D s n the correspondng locaton. Re_n n the fgure represents that D2D reuses the resources of n cellular users. The N(=6) cellular users are dstrbuted unformly n the cell ndcated by damonds. We can see that the cellular mode s the optmal method when the D2D par locates at the cell center, because the lnks between the BS and the D2D users are n good condton. The dedcated resource mode becomes the optmal method when the D2D par gets farther away from the BS. D2D wll reuse the resources of more than one cellular user, and the number of users whose resources are reused by D2D ncreases wth the dstance between the D2D transmtter and the BS. D2D wll reuse the resources of 6 users at the cell edge. The conventonal resource allocaton method that D2D reuses the resource of only one cellular user never becomes the optmal method wherever the D2D par locates. We can see that reusng the resources of more than one cellular user s the optmal resource allocaton method n the most part of the cell area. We can also utlze the resource reusng method by reusng the resources of other users when D2D transmtter s very close to one of the cellular user. Fg. 2(b) llustrates the sum throughput gan of cellular communcaton and D2D communcaton by usng the proposed resource allocaton method compared wth the method that D2D reuses the resource of only one cellular user. The sum throughput gan s 1 when the D2D par locates at the cell center, because D2D do not take the resource reusng mode. The sum throughput gan ncreases when the D2D transmtter becomes farther away from the BS. Moreover, the sum throughput of cellular communcaton and D2D communcaton by reusng the resources of more than one cellular user s.5 tmes larger than that by reusng the resource of only one cellular user. We can see that the proposed resource allocaton method that D2D reuses the resources of more than one cellular user can use spectrum more effcently. (a) (b) Fgure 2. The N(=6) cellular users are unformly dstrbuted n the cell: (a) the optmal resource allocaton method vs. the locaton of the D2D transmtter. (b) the throughput gan vs. the locaton of the D2D transmtter. In the followng, we study the sum throughput performance n the scenaro that the cellular users congregate n some area of the cell. Fg. 3(a) llustrates the selecton results of the optmal resource allocaton method when the transmtter of D2D s dstrbuted n dfferent place n the cell when DL resources are reused. The color ndcates the optmal resource allocaton method when the transmtter of D2D s n the correspondng locaton. The N(=6) users congregate n some area of the cell ndcated by damonds. We can see that the dedcated resource mode s the optmal method when the D2D transmtter s close to the BS or the cellular users. The number of users whose resources are reused by D2D ncreases gradually when the D2D transmtter becomes farther away from the cellular users. The method that D2D reuses the

5 resources of 6 users s the optmal resource allocaton method n the most part n the cell. Fg. 3(b) llustrates the sum throughput gan of cellular communcaton and D2D communcaton by usng the proposed resource allocaton method compared wth the method that D2D reuses the resource of only one user when cellular users congregate n some area of the cell. The throughput gan ncreases gradually wth the ncrease of the dstance between D2D transmtter and the BS or the cellular users, and acheves almost up to 1.5 at the cell edge. (a) assume R=.6, L=.2. The recever of D2D s D far away from the BS, the transmtter of D2D s D far away from the BS f D>L/2 or L-D far away from the BS f D<L/2. Fg. 4(a) llustrates the selecton results of the optmal resource allocaton method when the recever of D2D s dstrbuted n dfferent place n the cell. The color ndcates the optmal resource allocaton method when the recever of D2D s n the correspondng locaton. The N(=6) users dstrbuted unformly n the cell ndcated by damonds. We can see that the dedcated resource mode s the optmal method when the D2D par locates at the cell center. The number of users whose resources are reused by D2D ncreases gradually when the D2D recever becomes farther away from the BS. The proposed method that D2D reuses the resources of more than one cellular user s the optmal method when the D2D par locates at the most part of the cell area. Fg. 4(b) llustrates the sum throughput gan of cellular communcaton and D2D communcaton by usng the proposed resource allocaton method compared wth the method that D2D reuses the resource of only one cellular user. The sum throughput gan s 1 when the D2D par locates at the cell center. The throughput gan ncreases gradually when the D2D recever becomes farther away from the BS, and acheves more than 1.5 at the cell edge. The sum throughput gan s sgnfcantly n the most part of the cell area. (b) Fgure 3. The N(=6) cellular users congregate n some area of the cell : (a) the optmal resource allocaton method vs. the locaton of the D2D transmtter. (b) the throughput gan vs. the locaton of the D2D transmtter (a) We can see that the resource allocaton method that we proposed s the optmal method n the most part of the cell area whenever the cellular users are dstrbuted unformly or not when DL resources are reused. The proposed method wll ncrease the sum throughput of cellular communcaton and D2D communcaton sgnfcantly. B. UL Smulaton In ths subsecton, we smulate the performance of the optmal resource allocaton method selecton and the sum throughput performance of the proposed resource allocaton method when the UL resources are reused by D2D par. The transmt power of D2D communcaton s lower than that of the cellular users by 16dB to reduce the nterference from D2D to cellular communcaton when D2D reuses UL resources. We (b) Fgure 4. The N(=6) cellular users are unformly dstrbuted n the cell: (a) the optmal resource allocaton method vs. the locaton of the D2D recever. (b) the throughput gan vs. the locaton of the D2D recever.

6 The results when the cellular users congregate n some area of the cell are smlar wth the results of reusng DL resources, so we do not dscuss them here. We can see that the proposed resource allocaton method that D2D reuses the resources of more than one cellular user s the optmal method n the most part of the cell area whch s the same as the DL. The proposed method can ncrease the sum throughput of cellular communcaton and D2D communcaton sgnfcantly. Throughput gan R=.2 DL R=.4 DL R=.6 DL R=.8 DL R=.2 UL R=.4 UL R=.6 UL R=.8 UL L Fgure 5. The throughput gan of the proposed method compared wth reusng the resource of only one cellular user under dfferent R and L. In the followng, we study the sum throughput gan performance when the D2D par locates at the cell edge. Fg. 5 llustrates the sum throughput gan of cellular communcaton and D2D communcaton by usng the proposed resource allocaton method compared wth the method that D2D reuses the resource of only one cellular user when D2D par locates at the cell edge under dfferent R and L. We can learn that the sum throughput gan decreases wth the ncreasng of L, because the lnk of D2D becomes worse wth larger L. D2D wll not reuse DL resources f L>.5. The sum throughput gan ncreases wth R. The nterference between D2D and the user whose resources are reused by D2D decreases wth the ncreasng of R, because the dstance between the D2D par and the user becomes larger wth R. We can see that the proposed method that D2D reuses the resources of more than one cellular user wll ncrease the sum throughput sgnfcantly whenever D2D reuses the resources of DL or UL. The proposed resource allocaton method can use spectrum more effcently. both UL and DL whenever the cellular users are dstrbuted unformly n the cell or not. The proposed method acheves better performance when the D2D par becomes closer to the cell edge. The sum throughput mprovement s also more sgnfcant wth smaller L and bgger R. REFERENCES [1] 3GPP TS 36.3, v9.1., E-UTRA and E-UTRAN; Overall descrpton, September 29. [2] R , M2M Communcatons, Alcatel-Lucent, 3GPP RAN1#54, August 28. [3] K. Doppler, M. Rnne, P. Jäns, C. Rbero, and K. Hugl, Devce-to- Devce Communcatons; Functonal Prospects for LTE-Advanced Networks, n IEEE Internatonal Conference on Communcatons (ICC), Dresden, Germany, June 29. [4] K. Doppler, M. Rnne, C. Wjtng, C. Rbero, and K. Hugl, Devce-todevce communcaton as an underlay to LTE-advanced networks IEEE Communcatons Magazne, vol. 47, no. 12, pp [5] P. Jäns, V. Kovunen, C. Rbero, J. Korhonen, K. Doppler, and K. Hugl, Interference-aware resource allocaton for devce-to-devce rado underlayng cellular networks, n IEEE Vehcular Technologes Conference 29 Sprng, Barcelona, Span, Aprl 29. [6] C.-H. Yu, O. Trkkonen, K. Doppler, and C. Rbero, Power optmzaton of devce-to-devce communcaton underlayng cellular communcaton, n IEEE Internatonal Conference on Communcaton Technology, Dresden, Germany, June 29. [7] K. Doppler, C.-H. Yu, C. Rbero, and P. Jäns, Mode selecton for Devce-to-Devce Communcaton underlayng an LTE-Advanced Network, n IEEE Wreless Communcatons and Networkng Conference (WCNC), Sydney, Australa, Aprl 21. [8] T. Peng, Q. Lu, H. Wang, S. Xu, and W. Wang, Interference Avodance Mechansms n the Hybrd Cellular and Devce-to-Devce Systems, n IEEE 2 th Internatonal S ymposum on, Personal, Indoor and Moble Rado Communcatons, Tokyo, September 29. [9] T. Chen, G. Charbt, and S. Hakola, Tme Hoppng for Devce-todevce Communcaton n LTE Cellular System, n IEEE Wreless Communcatons and Networkng Conference (WCNC), Sydney, Australa, Aprl 21. [1] T. M. Cover and J. A. Thomas, Elements of nformaton theory. New York: Wley, V. CONCLUSION D2D s an advanced technology that can ncrease the spectral effcency and energy effcency by reusng the resource of cellular user. In ths paper, we studed the resource allocaton optmzaton for D2D communcaton underlayng cellular networks. We proposed a resource allocaton method that D2D can reuse the resources of more than one cellular user. We assumed the BS can select the optmal resource allocaton method wth the CSI of all nvolved lnks. The results show that the proposed method s the optmal method when D2D locates at the most part of the cell area. The sum throughput mprovement by usng the proposed method s sgnfcant n

Comparative Analysis of Reuse 1 and 3 in Cellular Network Based On SIR Distribution and Rate

Comparative Analysis of Reuse 1 and 3 in Cellular Network Based On SIR Distribution and Rate Comparatve Analyss of Reuse and 3 n ular Network Based On IR Dstrbuton and Rate Chandra Thapa M.Tech. II, DEC V College of Engneerng & Technology R.V.. Nagar, Chttoor-5727, A.P. Inda Emal: chandra2thapa@gmal.com

More information

Capacity improvement of the single mode air interface WCDMA FDD with relaying

Capacity improvement of the single mode air interface WCDMA FDD with relaying 2004 Internatonal Workshop on Wreless Ad-Hoc Networks Capacty mprovement of the sngle mode ar nterface WCDMA FDD wth relayng H. Nourzadeh, S. Nourzadeh and R. Tafazoll Centre for Comnurcaton Systems Research

More information

Calculation of the received voltage due to the radiation from multiple co-frequency sources

Calculation of the received voltage due to the radiation from multiple co-frequency sources Rec. ITU-R SM.1271-0 1 RECOMMENDATION ITU-R SM.1271-0 * EFFICIENT SPECTRUM UTILIZATION USING PROBABILISTIC METHODS Rec. ITU-R SM.1271 (1997) The ITU Radocommuncaton Assembly, consderng a) that communcatons

More information

Performance Analysis of Multi User MIMO System with Block-Diagonalization Precoding Scheme

Performance Analysis of Multi User MIMO System with Block-Diagonalization Precoding Scheme Performance Analyss of Mult User MIMO System wth Block-Dagonalzaton Precodng Scheme Yoon Hyun m and Jn Young m, wanwoon Unversty, Department of Electroncs Convergence Engneerng, Wolgye-Dong, Nowon-Gu,

More information

Full-duplex Relaying for D2D Communication in mmwave based 5G Networks

Full-duplex Relaying for D2D Communication in mmwave based 5G Networks Full-duplex Relayng for D2D Communcaton n mmwave based 5G Networks Boang Ma Hamed Shah-Mansour Member IEEE and Vncent W.S. Wong Fellow IEEE Abstract Devce-to-devce D2D communcaton whch can offload data

More information

Channel Alternation and Rotation in Narrow Beam Trisector Cellular Systems

Channel Alternation and Rotation in Narrow Beam Trisector Cellular Systems Channel Alternaton and Rotaton n Narrow Beam Trsector Cellular Systems Vncent A. Nguyen, Peng-Jun Wan, Ophr Freder Illnos Insttute of Technology-Communcaton Laboratory Research Computer Scence Department-Chcago,

More information

Traffic balancing over licensed and unlicensed bands in heterogeneous networks

Traffic balancing over licensed and unlicensed bands in heterogeneous networks Correspondence letter Traffc balancng over lcensed and unlcensed bands n heterogeneous networks LI Zhen, CUI Qme, CUI Zhyan, ZHENG We Natonal Engneerng Laboratory for Moble Network Securty, Bejng Unversty

More information

A MODIFIED DIRECTIONAL FREQUENCY REUSE PLAN BASED ON CHANNEL ALTERNATION AND ROTATION

A MODIFIED DIRECTIONAL FREQUENCY REUSE PLAN BASED ON CHANNEL ALTERNATION AND ROTATION A MODIFIED DIRECTIONAL FREQUENCY REUSE PLAN BASED ON CHANNEL ALTERNATION AND ROTATION Vncent A. Nguyen Peng-Jun Wan Ophr Freder Computer Scence Department Illnos Insttute of Technology Chcago, Illnos vnguyen@t.edu,

More information

Throughput Maximization by Adaptive Threshold Adjustment for AMC Systems

Throughput Maximization by Adaptive Threshold Adjustment for AMC Systems APSIPA ASC 2011 X an Throughput Maxmzaton by Adaptve Threshold Adjustment for AMC Systems We-Shun Lao and Hsuan-Jung Su Graduate Insttute of Communcaton Engneerng Department of Electrcal Engneerng Natonal

More information

HUAWEI TECHNOLOGIES CO., LTD. Huawei Proprietary Page 1

HUAWEI TECHNOLOGIES CO., LTD. Huawei Proprietary Page 1 Project Ttle Date Submtted IEEE 802.16 Broadband Wreless Access Workng Group Double-Stage DL MU-MIMO Scheme 2008-05-05 Source(s) Yang Tang, Young Hoon Kwon, Yajun Kou, Shahab Sanaye,

More information

RESOURCE CONTROL FOR HYBRID CODE AND TIME DIVISION SCHEDULING

RESOURCE CONTROL FOR HYBRID CODE AND TIME DIVISION SCHEDULING RESOURCE CONTROL FOR HYBRID CODE AND TIME DIVISION SCHEDULING Vaslos A. Srs Insttute of Computer Scence (ICS), FORTH and Department of Computer Scence, Unversty of Crete P.O. Box 385, GR 7 Heraklon, Crete,

More information

Fractional Base Station Cooperation Cellular Network

Fractional Base Station Cooperation Cellular Network Fractonal Base Staton Cooperaton Cellular Network Naok usashma Tokyo Insttute of Technoloy, Department of Electrcal and Electronc Enneern, Arak-Sakauch Laboratores. Contents Backround Cell-ede problem

More information

Energy Efficiency Resource Allocation for Device-to-Device. Communication Underlaying Cellular Networks

Energy Efficiency Resource Allocation for Device-to-Device. Communication Underlaying Cellular Networks Energy Effcency Resource Allocaton for Devce-to-Devce Communcaton Unerlayng Cellular Networks AO-ZHOU YU AND QI ZHU The Key Wreless Laboratory of Jangsu rovnce School of Telecommuncaton an Informaton Engneerng

More information

Topology Control for C-RAN Architecture Based on Complex Network

Topology Control for C-RAN Architecture Based on Complex Network Topology Control for C-RAN Archtecture Based on Complex Network Zhanun Lu, Yung He, Yunpeng L, Zhaoy L, Ka Dng Chongqng key laboratory of moble communcatons technology Chongqng unversty of post and telecommuncaton

More information

Multi-Relay Selection Strategy for Device to Device Communication

Multi-Relay Selection Strategy for Device to Device Communication Internatonal Conference on Computer, Networks and Communcaton Engneerng (ICCNCE 3) Mult-elay Selecton Strategy for Devce to Devce Communcaton Wecheng Xa, Shxang Shao, Jun Sun Jangsu Provncal Key Laboratory

More information

A Benchmark for D2D in Cellular Networks: The Importance of Information

A Benchmark for D2D in Cellular Networks: The Importance of Information A Benchmark for D2D n Cellular Networks: The Importance of Informaton Yğt Özcan, Catherne Rosenberg Unversty of Waterloo {yozcan,cath}@uwaterloo.ca Fabrce Gullemn Orange Labs, France fabrce.gullemn@orange.com

More information

AN ALGORITHM TO COMBINE LINK ADAPTATION AND TRANSMIT POWER CONTROL IN HIPERLAN TYPE 2

AN ALGORITHM TO COMBINE LINK ADAPTATION AND TRANSMIT POWER CONTROL IN HIPERLAN TYPE 2 AN ALGORITHM TO COMBINE LINK ADAPTATION AND TRANSMIT POWER CONTROL IN HIPERLAN TYPE 2 Markus Radmrsch Inst. f. Allgem. Nachrchtentechnk, Unv. Hannover, Appelstr. 9a, 3167 Hannover, Germany Tel.: +49-511-762

More information

Uplink User Selection Scheme for Multiuser MIMO Systems in a Multicell Environment

Uplink User Selection Scheme for Multiuser MIMO Systems in a Multicell Environment Uplnk User Selecton Scheme for Multuser MIMO Systems n a Multcell Envronment Byong Ok Lee School of Electrcal Engneerng and Computer Scence and INMC Seoul Natonal Unversty leebo@moble.snu.ac.kr Oh-Soon

More information

Context-aware Cluster Based Device-to-Device Communication to Serve Machine Type Communications

Context-aware Cluster Based Device-to-Device Communication to Serve Machine Type Communications Context-aware Cluster Based Devce-to-Devce Communcaton to Serve Machne Type Communcatons J Langha, Lu Man, Hans D. Schotten Char of Wreless Communcaton, Unversty of Kaserslautern, Germany {j,manlu,schotten}@et.un-kl.de

More information

Distributed Channel Allocation Algorithm with Power Control

Distributed Channel Allocation Algorithm with Power Control Dstrbuted Channel Allocaton Algorthm wth Power Control Shaoj N Helsnk Unversty of Technology, Insttute of Rado Communcatons, Communcatons Laboratory, Otakaar 5, 0150 Espoo, Fnland. E-mal: n@tltu.hut.f

More information

Parameter Free Iterative Decoding Metrics for Non-Coherent Orthogonal Modulation

Parameter Free Iterative Decoding Metrics for Non-Coherent Orthogonal Modulation 1 Parameter Free Iteratve Decodng Metrcs for Non-Coherent Orthogonal Modulaton Albert Gullén Fàbregas and Alex Grant Abstract We study decoder metrcs suted for teratve decodng of non-coherently detected

More information

Enhanced Uplink Scheduling for Continuous Connectivity in High Speed Packet Access Systems

Enhanced Uplink Scheduling for Continuous Connectivity in High Speed Packet Access Systems Int. J. Communcatons, Network and System Scences, 212, 5, 446-453 http://dx.do.org/1.4236/jcns.212.5855 Publshed Onlne August 212 (http://www.scrp.org/journal/jcns) Enhanced Uplnk Schedulng for Contnuous

More information

FUTURE wireless systems will need to provide high data

FUTURE wireless systems will need to provide high data IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL., NO. 1, JANUARY 7 9 Downlnk Performance and Capacty of Dstrbuted Antenna Systems n a Multcell Envronment Wan Cho, Student Member, IEEE, and Jeffrey G.

More information

Rejection of PSK Interference in DS-SS/PSK System Using Adaptive Transversal Filter with Conditional Response Recalculation

Rejection of PSK Interference in DS-SS/PSK System Using Adaptive Transversal Filter with Conditional Response Recalculation SERBIAN JOURNAL OF ELECTRICAL ENGINEERING Vol., No., November 23, 3-9 Rejecton of PSK Interference n DS-SS/PSK System Usng Adaptve Transversal Flter wth Condtonal Response Recalculaton Zorca Nkolć, Bojan

More information

Clustering Based Fractional Frequency Reuse and Fair Resource Allocation in Multi-cell Networks

Clustering Based Fractional Frequency Reuse and Fair Resource Allocation in Multi-cell Networks Ths full text paper was peer revewed at the drecton of IEEE Communcatons Socety subject matter experts for publcaton n the IEEE ICC 21 proceedngs Clusterng Based Fractonal Frequency Reuse and Far Resource

More information

Resource Control for Elastic Traffic in CDMA Networks

Resource Control for Elastic Traffic in CDMA Networks Resource Control for Elastc Traffc n CDMA Networks Vaslos A. Srs Insttute of Computer Scence, FORTH Crete, Greece vsrs@cs.forth.gr ACM MobCom 2002 Sep. 23-28, 2002, Atlanta, U.S.A. Funded n part by BTexact

More information

AN IMPROVED BIT LOADING TECHNIQUE FOR ENHANCED ENERGY EFFICIENCY IN NEXT GENERATION VOICE/VIDEO APPLICATIONS

AN IMPROVED BIT LOADING TECHNIQUE FOR ENHANCED ENERGY EFFICIENCY IN NEXT GENERATION VOICE/VIDEO APPLICATIONS Journal of Engneerng Scence and Technology Vol., o. 4 (6) 476-495 School of Engneerng, Taylor s Unversty A IMPROVED BIT LOADIG TECHIQUE FOR EHACED EERGY EFFICIECY I EXT GEERATIO VOICE/VIDEO APPLICATIOS

More information

Study of Downlink Radio Resource Allocation Scheme with Interference Coordination in LTE A Network

Study of Downlink Radio Resource Allocation Scheme with Interference Coordination in LTE A Network Internatonal Journal of Future Computer and Communcaton, Vol. 6, o. 3, September 2017 Study of Downln Rado Resource Allocaton Scheme wth Interference Coordnaton n LTE A etwor Yen-Wen Chen and Chen-Ju Chen

More information

Joint Adaptive Modulation and Power Allocation in Cognitive Radio Networks

Joint Adaptive Modulation and Power Allocation in Cognitive Radio Networks I. J. Communcatons, etwork and System Scences, 8, 3, 7-83 Publshed Onlne August 8 n ScRes (http://www.scrp.org/journal/jcns/). Jont Adaptve Modulaton and Power Allocaton n Cogntve Rado etworks Dong LI,

More information

Keywords LTE, Uplink, Power Control, Fractional Power Control.

Keywords LTE, Uplink, Power Control, Fractional Power Control. Volume 3, Issue 6, June 2013 ISSN: 2277 128X Internatonal Journal of Advanced Research n Computer Scence and Software Engneerng Research Paper Avalable onlne at: www.jarcsse.com Uplnk Power Control Schemes

More information

Adaptive Modulation for Multiple Antenna Channels

Adaptive Modulation for Multiple Antenna Channels Adaptve Modulaton for Multple Antenna Channels June Chul Roh and Bhaskar D. Rao Department of Electrcal and Computer Engneerng Unversty of Calforna, San Dego La Jolla, CA 993-7 E-mal: jroh@ece.ucsd.edu,

More information

熊本大学学術リポジトリ. Kumamoto University Repositor

熊本大学学術リポジトリ. Kumamoto University Repositor 熊本大学学術リポジトリ Kumamoto Unversty Repostor Ttle Wreless LAN Based Indoor Poston and Its Smulaton Author(s) Ktasuka, Teruak; Nakansh, Tsune CtatonIEEE Pacfc RIM Conference on Comm Computers, and Sgnal Processng

More information

Enhancing Throughput in Wireless Multi-Hop Network with Multiple Packet Reception

Enhancing Throughput in Wireless Multi-Hop Network with Multiple Packet Reception Enhancng Throughput n Wreless Mult-Hop Network wth Multple Packet Recepton Ja-lang Lu, Paulne Vandenhove, We Shu, Mn-You Wu Dept. of Computer Scence & Engneerng, Shangha JaoTong Unversty, Shangha, Chna

More information

A study of turbo codes for multilevel modulations in Gaussian and mobile channels

A study of turbo codes for multilevel modulations in Gaussian and mobile channels A study of turbo codes for multlevel modulatons n Gaussan and moble channels Lamne Sylla and Paul Forter (sylla, forter)@gel.ulaval.ca Department of Electrcal and Computer Engneerng Laval Unversty, Ste-Foy,

More information

PRACTICAL, COMPUTATION EFFICIENT HIGH-ORDER NEURAL NETWORK FOR ROTATION AND SHIFT INVARIANT PATTERN RECOGNITION. Evgeny Artyomov and Orly Yadid-Pecht

PRACTICAL, COMPUTATION EFFICIENT HIGH-ORDER NEURAL NETWORK FOR ROTATION AND SHIFT INVARIANT PATTERN RECOGNITION. Evgeny Artyomov and Orly Yadid-Pecht 68 Internatonal Journal "Informaton Theores & Applcatons" Vol.11 PRACTICAL, COMPUTATION EFFICIENT HIGH-ORDER NEURAL NETWORK FOR ROTATION AND SHIFT INVARIANT PATTERN RECOGNITION Evgeny Artyomov and Orly

More information

Distributed Uplink Scheduling in EV-DO Rev. A Networks

Distributed Uplink Scheduling in EV-DO Rev. A Networks Dstrbuted Uplnk Schedulng n EV-DO ev. A Networks Ashwn Srdharan (Sprnt Nextel) amesh Subbaraman, och Guérn (ESE, Unversty of Pennsylvana) Overvew of Problem Most modern wreless systems Delver hgh performance

More information

Power Minimization Under Constant Throughput Constraint in Wireless Networks with Beamforming

Power Minimization Under Constant Throughput Constraint in Wireless Networks with Beamforming Power Mnmzaton Under Constant Throughput Constrant n Wreless etworks wth Beamformng Zhu Han and K.J. Ray Lu, Electrcal and Computer Engneer Department, Unversty of Maryland, College Park. Abstract In mult-access

More information

The Spectrum Sharing in Cognitive Radio Networks Based on Competitive Price Game

The Spectrum Sharing in Cognitive Radio Networks Based on Competitive Price Game 8 Y. B. LI, R. YAG, Y. LI, F. YE, THE SPECTRUM SHARIG I COGITIVE RADIO ETWORKS BASED O COMPETITIVE The Spectrum Sharng n Cogntve Rado etworks Based on Compettve Prce Game Y-bng LI, Ru YAG., Yun LI, Fang

More information

Approximating User Distributions in WCDMA Networks Using 2-D Gaussian

Approximating User Distributions in WCDMA Networks Using 2-D Gaussian CCCT 05: INTERNATIONAL CONFERENCE ON COMPUTING, COMMUNICATIONS, AND CONTROL TECHNOLOGIES 1 Approxmatng User Dstrbutons n CDMA Networks Usng 2-D Gaussan Son NGUYEN and Robert AKL Department of Computer

More information

A New Type of Weighted DV-Hop Algorithm Based on Correction Factor in WSNs

A New Type of Weighted DV-Hop Algorithm Based on Correction Factor in WSNs Journal of Communcatons Vol. 9, No. 9, September 2014 A New Type of Weghted DV-Hop Algorthm Based on Correcton Factor n WSNs Yng Wang, Zhy Fang, and Ln Chen Department of Computer scence and technology,

More information

Providing Strict Quality of Service in HSDPA for real time services

Providing Strict Quality of Service in HSDPA for real time services Provdng Strct Qualty of Servce n HSDPA for real tme servces Joseph S. Gomes, Mra Yun, Hyeong-Ah Cho, Jae-Hoon Km 2, JungKyo Sohn 3, Hyeong-In Cho 3 Department of Computer Scence, George Washngton Unversty,

More information

Distributed user selection scheme for uplink multiuser MIMO systems in a multicell environment

Distributed user selection scheme for uplink multiuser MIMO systems in a multicell environment Lee et al. EURASIP Journal on Wreless Communcatons and Networkng 212, 212:22 http://s.euraspournals.com/content/212/1/22 RESEARCH Dstrbuted user selecton scheme for uplnk multuser MIMO systems n a multcell

More information

Optimal Design of High Density WLANs

Optimal Design of High Density WLANs Optmal Desgn of Hgh Densty 8. WLANs Vvek P. Mhatre Thomson Research Lab, Pars, France mhatre@gmal.com Konstantna Papagannak Intel Research Cambrdge, UK dna.papagannak@ntel.com Abstract: The provsonng of

More information

Walsh Function Based Synthesis Method of PWM Pattern for Full-Bridge Inverter

Walsh Function Based Synthesis Method of PWM Pattern for Full-Bridge Inverter Walsh Functon Based Synthess Method of PWM Pattern for Full-Brdge Inverter Sej Kondo and Krt Choesa Nagaoka Unversty of Technology 63-, Kamtomoka-cho, Nagaoka 9-, JAPAN Fax: +8-58-7-95, Phone: +8-58-7-957

More information

Define Y = # of mobiles from M total mobiles that have an adequate link. Measure of average portion of mobiles allocated a link of adequate quality.

Define Y = # of mobiles from M total mobiles that have an adequate link. Measure of average portion of mobiles allocated a link of adequate quality. Wreless Communcatons Technologes 6::559 (Advanced Topcs n Communcatons) Lecture 5 (Aprl th ) and Lecture 6 (May st ) Instructor: Professor Narayan Mandayam Summarzed by: Steve Leung (leungs@ece.rutgers.edu)

More information

Performance Evaluation of QoS Parameters in Dynamic Spectrum Sharing for Heterogeneous Wireless Communication Networks

Performance Evaluation of QoS Parameters in Dynamic Spectrum Sharing for Heterogeneous Wireless Communication Networks IJCSI Internatonal Journal of Computer Scence Issues, Vol. 9, Issue 1, No 2, January 2012 ISSN (Onlne): 1694-0814 www.ijcsi.org 81 Performance Evaluaton of QoS Parameters n Dynamc Spectrum Sharng for Heterogeneous

More information

Dynamic Optimization. Assignment 1. Sasanka Nagavalli January 29, 2013 Robotics Institute Carnegie Mellon University

Dynamic Optimization. Assignment 1. Sasanka Nagavalli January 29, 2013 Robotics Institute Carnegie Mellon University Dynamc Optmzaton Assgnment 1 Sasanka Nagavall snagaval@andrew.cmu.edu 16-745 January 29, 213 Robotcs Insttute Carnege Mellon Unversty Table of Contents 1. Problem and Approach... 1 2. Optmzaton wthout

More information

An Application-Aware Spectrum Sharing Approach for Commercial Use of 3.5 GHz Spectrum

An Application-Aware Spectrum Sharing Approach for Commercial Use of 3.5 GHz Spectrum An Applcaton-Aware Spectrum Sharng Approach for Commercal Use of 3.5 GHz Spectrum Haya Shajaah, Ahmed Abdelhad and Charles Clancy Bradley Department of Electrcal and Computer Engneerng Hume Center, Vrgna

More information

Research Article A Utility-Based Rate Allocation of M2M Service in Heterogeneous Wireless Environments

Research Article A Utility-Based Rate Allocation of M2M Service in Heterogeneous Wireless Environments Internatonal Dstrbuted Sensor etworks Volume 3, Artcle ID 3847, 7 pages http://dx.do.org/.55/3/3847 Research Artcle A Utlty-Based Rate Allocaton of MM Servce n Heterogeneous Wreless Envronments Yao Huang,

More information

Space Time Equalization-space time codes System Model for STCM

Space Time Equalization-space time codes System Model for STCM Space Tme Eualzaton-space tme codes System Model for STCM The system under consderaton conssts of ST encoder, fadng channel model wth AWGN, two transmt antennas, one receve antenna, Vterb eualzer wth deal

More information

Energy Efficiency Analysis of a Multichannel Wireless Access Protocol

Energy Efficiency Analysis of a Multichannel Wireless Access Protocol Energy Effcency Analyss of a Multchannel Wreless Access Protocol A. Chockalngam y, Wepng u, Mchele Zorz, and Laurence B. Mlsten Department of Electrcal and Computer Engneerng, Unversty of Calforna, San

More information

High Speed, Low Power And Area Efficient Carry-Select Adder

High Speed, Low Power And Area Efficient Carry-Select Adder Internatonal Journal of Scence, Engneerng and Technology Research (IJSETR), Volume 5, Issue 3, March 2016 Hgh Speed, Low Power And Area Effcent Carry-Select Adder Nelant Harsh M.tech.VLSI Desgn Electroncs

More information

Queuing-Based Dynamic Channel Selection for Heterogeneous Multimedia Applications over Cognitive Radio Networks

Queuing-Based Dynamic Channel Selection for Heterogeneous Multimedia Applications over Cognitive Radio Networks 1 Queung-Based Dynamc Channel Selecton for Heterogeneous ultmeda Applcatons over Cogntve Rado Networks Hsen-Po Shang and haela van der Schaar Department of Electrcal Engneerng (EE), Unversty of Calforna

More information

Adaptive Modulation and Coding for Utility Enhancement in VMIMO WSN Using Game Theory

Adaptive Modulation and Coding for Utility Enhancement in VMIMO WSN Using Game Theory Adaptve Modulaton and Codng for Utlty nhancement n VMIMO WSN Usng Game Theory R. Vall and P. Dananjayan mparments. The data transmtted from the sensor nodes s hghly susceptble to error n a wreless envronment

More information

The Impact of Spectrum Sensing Frequency and Packet- Loading Scheme on Multimedia Transmission over Cognitive Radio Networks

The Impact of Spectrum Sensing Frequency and Packet- Loading Scheme on Multimedia Transmission over Cognitive Radio Networks Ths artcle has been accepted for publcaton n a future ssue of ths journal, but has not been fully edted. Content may change pror to fnal publcaton. The Impact of Spectrum Sensng Frequency and Pacet- Loadng

More information

Analysis of Lifetime of Large Wireless Sensor Networks Based on Multiple Battery Levels

Analysis of Lifetime of Large Wireless Sensor Networks Based on Multiple Battery Levels I. J. Communcatons, Network and System Scences, 008,, 05-06 Publshed Onlne May 008 n ScRes (http://www.srpublshng.org/journal/jcns/). Analyss of Lfetme of Large Wreless Sensor Networks Based on Multple

More information

Cooperative Multicast Scheduling Scheme for IPTV Service over IEEE Networks

Cooperative Multicast Scheduling Scheme for IPTV Service over IEEE Networks Cooperatve Multcast Schedulng Scheme for IPTV Servce over IEEE 802.16 Networks Fen Hou 1, Ln X. Ca 1, James She 1, Pn-Han Ho 1, Xuemn (Sherman Shen 1, and Junshan Zhang 2 Unversty of Waterloo, Waterloo,

More information

QoS-Based Performance and Resource Management in 3G Wireless Networks in Realistic Environments

QoS-Based Performance and Resource Management in 3G Wireless Networks in Realistic Environments The Internatonal Arab Journal of Informaton Technology, Vol. 1, o. 1, January 213 1 QoS-Based Performance and Resource Management n 3G Wreless etworks n Realstc Envronments Aymen Issa Zrekat Department

More information

EE360: Lecture 7 Outline Cellular System Capacity and ASE Announcements Summary due next week

EE360: Lecture 7 Outline Cellular System Capacity and ASE Announcements Summary due next week EE360: Lecture 7 Outlne Cellular System Capacty and ASE Announcements Summary due next week Capacty Area Spectral Effcency Dynamc Resource Allocaton Revew of Cellular Lecture Desgn consderatons: Spectral

More information

Assessment of LTE Uplink Power Control with Different Frequency Reuses Schemes

Assessment of LTE Uplink Power Control with Different Frequency Reuses Schemes ICDT 22 : The Seventh Internatonal Conference on Dgtal Telecommuncatons Assessment of LTE Uplnk Power Control wth Dfferent Frequency Reuses Schemes Mohamed M. El-Ghawaby Electroncs and Communcatons AAST

More information

TODAY S wireless networks are characterized as a static

TODAY S wireless networks are characterized as a static IEEE TRANSACTIONS ON MOBILE COMPUTING, VOL. 10, NO. 2, FEBRUARY 2011 161 A Spectrum Decson Framework for Cogntve Rado Networks Won-Yeol Lee, Student Member, IEEE, and Ian F. Akyldz, Fellow, IEEE Abstract

More information

Combined Beamforming and Scheduling for High Speed Downlink Packet Access

Combined Beamforming and Scheduling for High Speed Downlink Packet Access Combned Beamformng and Schedulng for Hgh Speed Downlnk Packet Access Alexander Seeger Informaton and Communcaton Moble Semens A.G. Hofmannstr.5, 8359 Munch, Germany Alexander.Seeger@semens.com Marcn Skora

More information

Joint Power Control and Scheduling for Two-Cell Energy Efficient Broadcasting with Network Coding

Joint Power Control and Scheduling for Two-Cell Energy Efficient Broadcasting with Network Coding Communcatons and Network, 2013, 5, 312-318 http://dx.do.org/10.4236/cn.2013.53b2058 Publshed Onlne September 2013 (http://www.scrp.org/journal/cn) Jont Power Control and Schedulng for Two-Cell Energy Effcent

More information

A NOVEL PREAMBLE DESIGN FOR CHANNEL ESTIMATION IN MIMO- OFDM SYSTEMS RESULTING IN ENHANCED THROUGHPUT

A NOVEL PREAMBLE DESIGN FOR CHANNEL ESTIMATION IN MIMO- OFDM SYSTEMS RESULTING IN ENHANCED THROUGHPUT Volume 53, umber 3, 01 ACTA TECHICA APOCESIS Electroncs and Telecommuncatons A OVEL PREAMBLE DESIG FOR CHAEL ESTIMATIO I MIMO- OFDM SYSTEMS RESULTIG I EHACED THROUGHPUT Shakeel Salamat ULLAH atonal Unversty

More information

Spectrum Co-existence of IEEE b and a Networks Using Reactive and Proactive Etiquette Policies

Spectrum Co-existence of IEEE b and a Networks Using Reactive and Proactive Etiquette Policies Moble Netw Appl (2006) 11:539 554 DOI 10.1007/s11036-006-7321-z Spectrum Co-exstence of IEEE 802.11b and 802.16a Networks Usng Reactve and Proactve Etquette Polces Xangpeng Jng Dpankar Raychaudhur Publshed

More information

MIMO Precoding Using Rotating Codebooks

MIMO Precoding Using Rotating Codebooks 1 MIMO Precodng Usng Rotatng Codebooks C Jang, M Wang, C Yang Abstract Next generaton wreless communcatons rely on multple nput multple output (MIMO) technques to acheve hgh data rates. eedback of channel

More information

CELLULAR SYSTEM CAPACITY and PERFORMANCE IMPROVEMENT with SDMA

CELLULAR SYSTEM CAPACITY and PERFORMANCE IMPROVEMENT with SDMA CELLULAR SYSTEM CAPACITY and PERFORMANCE IMPROVEMENT wth SDMA Flpe Alves, Henrque Rbero, José Fernandes 3 Escola Superor de Tecnologa, Insttuto Poltécnco de Castelo Branco, 6 Castelo Branco, Portugal Phone:+35-7-339355

More information

Time-Reversal Tunneling Effects for Cloud Radio Access Network

Time-Reversal Tunneling Effects for Cloud Radio Access Network Tme-Reversal Tunnelng Effects for Cloud Rado Access Network Hang Ma, Student Member, IEEE, Bebe Wang, Senor Member, IEEE, Yan Chen, Senor Member, IEEE, and K. J. Ray Lu, Fellow, IEEE Abstract The exploson

More information

Energy-efficient Subcarrier Allocation in SC-FDMA Wireless Networks based on Multilateral Model of Bargaining

Energy-efficient Subcarrier Allocation in SC-FDMA Wireless Networks based on Multilateral Model of Bargaining etworkng 03 569707 Energy-effcent Subcarrer Allocaton n SC-FDMA Wreless etworks based on Multlateral Model of Barganng Ern Elen Tsropoulou Aggelos Kapoukaks and Symeon apavasslou School of Electrcal and

More information

Optimal Pricing for Interference Control in Time-reversal Device-to-Device Uplinks

Optimal Pricing for Interference Control in Time-reversal Device-to-Device Uplinks 05 IEEE Global Conference on Sgnal and Informaton Processng (GlobalSIP) Optmal Prcng for Interference Control n Tme-reversal Devce-to-Devce Uplns Qny Xu, Yan Chen, and K. J. Ray Lu, Abstract The Devce-to-Devce

More information

Impact of Interference Model on Capacity in CDMA Cellular Networks. Robert Akl, D.Sc. Asad Parvez University of North Texas

Impact of Interference Model on Capacity in CDMA Cellular Networks. Robert Akl, D.Sc. Asad Parvez University of North Texas Impact of Interference Model on Capacty n CDMA Cellular Networks Robert Akl, D.Sc. Asad Parvez Unversty of North Texas Outlne Introducton to CDMA networks Average nterference model Actual nterference model

More information

An Optimal Model and Solution of Deployment of Airships for High Altitude Platforms

An Optimal Model and Solution of Deployment of Airships for High Altitude Platforms An Optmal Model and Soluton of Deployment of Arshps for Hgh Alttude Platforms Xuyu Wang, Xnbo Gao, Ru Zong, Peng Cheng. VIPS Lab, School of Electronc Engneerng, Xdan Unversty, X an 77, Chna. Department

More information

A Novel DSA-Driven MAC Protocol for Cognitive Radio Networks

A Novel DSA-Driven MAC Protocol for Cognitive Radio Networks Wreless Sensor Networ, 29, 2, 6-2 do:.4236/wsn.29.2 7 Publshed Onlne July 29 (http://www.scrp.org/journal/wsn/). A Novel DSA-Drven MAC Protocol for Cogntve Rado Networs Hua SONG, Xaola LIN School of Informaton

More information

MIMO-OFDM Systems. Team Telecommunication and Computer Networks, FSSM, University Cadi Ayyad, P.O. Box 2390, Marrakech, Morocco.

MIMO-OFDM Systems. Team Telecommunication and Computer Networks, FSSM, University Cadi Ayyad, P.O. Box 2390, Marrakech, Morocco. IJCSI Internatonal Journal of Computer Scence Issues, Vol. 8, Issue 3, ay 2011 ISSN (Onlne: 1694-0814 A Low-complexty Power and Bt Allocaton Algorthm for ultuser IO-OFD Systems Ayad Habb 1, Khald El Baamran

More information

Resource Allocation for Throughput Enhancement in Cellular Shared Relay Networks

Resource Allocation for Throughput Enhancement in Cellular Shared Relay Networks Resource Allocaton for Throughput Enhancement n Cellular Shared Relay Networs Mohamed Fadel, Ahmed Hndy, Amr El-Key, Mohammed Nafe, O. Ozan Koyluoglu, Antona M. Tulno Wreless Intellgent Networs Center

More information

Evaluating Different One to Many Packet Delivery Schemes for UMTS

Evaluating Different One to Many Packet Delivery Schemes for UMTS Evaluatng Dfferent One to Many Packet Delvery Schemes for UMTS Antonos Alexou, Dmtros Antonells, Chrstos Bouras Research Academc Computer Technology Insttute, Greece and Computer Engneerng and Informatcs

More information

Relevance of Energy Efficiency Gain in Massive MIMO Wireless Network

Relevance of Energy Efficiency Gain in Massive MIMO Wireless Network Relevance of Energy Effcency Gan n Massve MIMO Wreless Network Ahmed Alzahran, Vjey Thayananthan, Muhammad Shuab Quresh Computer Scence Department, Faculty of Computng and Informaton Technology Kng Abdulazz

More information

PAPER Effect of Joint Detection on System Throughput in Distributed Antenna Network

PAPER Effect of Joint Detection on System Throughput in Distributed Antenna Network DOI:10.1587/transcom.2018EBP3077 Publczed:2018/08/29 Ths advance publcaton artcle wll after proofreadng. IEICE TRANS.??, VOL.Exx??, NO.xx XXXX 200x 1 PAPER Effect of Jont Detecton on System Throughput

More information

Improving Device-to-Device Communication Performance in 5G Networks through Joint Power Control and Resource Allocation

Improving Device-to-Device Communication Performance in 5G Networks through Joint Power Control and Resource Allocation Internatonal Journal of Communcatons htt://www.aras.org/aras/ournals/oc Imrovng Devce-to-Devce Communcaton Performance n 5G Networks through Jont Power Control and Resource Allocaton HWANG-CHENG WANG 1,

More information

Planning of Relay Station Locations in IEEE (WiMAX) Networks

Planning of Relay Station Locations in IEEE (WiMAX) Networks Ths full text paper was peer revewed at the drecton of IEEE Communcatons Socety subject matter experts for publcaton n the WCNC 010 proceedngs. Plannng of Relay Staton Locatons n IEEE 0.16 (WMAX) Networks

More information

Research of Dispatching Method in Elevator Group Control System Based on Fuzzy Neural Network. Yufeng Dai a, Yun Du b

Research of Dispatching Method in Elevator Group Control System Based on Fuzzy Neural Network. Yufeng Dai a, Yun Du b 2nd Internatonal Conference on Computer Engneerng, Informaton Scence & Applcaton Technology (ICCIA 207) Research of Dspatchng Method n Elevator Group Control System Based on Fuzzy Neural Network Yufeng

More information

Non-Vanishing Space Time Block Code for Three Time Slots and Two Transmit Antennas

Non-Vanishing Space Time Block Code for Three Time Slots and Two Transmit Antennas Journal of Computer and Communcatons 05 74-86 Publshed Onlne June 05 n Sces. http://www.scrp.org/journal/jcc http://dx.do.org/0.46/jcc.05.6008 Non-Vanshng Space me Block Code for hree me Slots and wo ransmt

More information

On High Spatial Reuse Broadcast Scheduling in STDMA Wireless Ad Hoc Networks

On High Spatial Reuse Broadcast Scheduling in STDMA Wireless Ad Hoc Networks On Hgh Spatal Reuse Broadcast Schedulng n STDMA Wreless Ad Hoc Networks Ashutosh Deepak Gore and Abhay Karandkar Informaton Networks Laboratory Department of Electrcal Engneerng Indan Insttute of Technology

More information

Spectrum Sharing For Delay-Sensitive Applications With Continuing QoS Guarantees

Spectrum Sharing For Delay-Sensitive Applications With Continuing QoS Guarantees Spectrum Sharng For Delay-Senstve Applcatons Wth Contnung QoS Guarantees Yuanzhang Xao, Kartk Ahuja, and Mhaela van der Schaar Department of Electrcal Engneerng, UCLA Emals: yxao@seas.ucla.edu, ahujak@ucla.edu,

More information

Index Terms Adaptive modulation, Adaptive FEC, Packet Error Rate, Performance.

Index Terms Adaptive modulation, Adaptive FEC, Packet Error Rate, Performance. ANALYTICAL COMPARISON OF THE PERFORMANCE OF ADAPTIVE MODULATION AND CODING IN WIRELESS NETWORK UNDER RAYLEIGH FADING 723 Sab Y.M. BANDIRI, Rafael M.S. BRAGA and Danlo H. SPADOTI Federal Unversty of Itajubá

More information

Adaptive Phase Synchronisation Algorithm for Collaborative Beamforming in Wireless Sensor Networks

Adaptive Phase Synchronisation Algorithm for Collaborative Beamforming in Wireless Sensor Networks 213 7th Asa Modellng Symposum Adaptve Phase Synchronsaton Algorthm for Collaboratve Beamformng n Wreless Sensor Networks Chen How Wong, Zhan We Sew, Renee Ka Yn Chn, Aroland Krng, Kenneth Tze Kn Teo Modellng,

More information

Cost Analysis and Efficient Radio Bearer Selection for Multicasting over UMTS

Cost Analysis and Efficient Radio Bearer Selection for Multicasting over UMTS Cost Analyss and Effcent Rado Bearer Selecton for Multcastng over UMTS Antonos Alexou, Chrstos Bouras, Vasleos Kokknos, Evangelos Rekkas Research Academc Computer Technology Insttute, Greece and Computer

More information

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 13, NO. 12, DECEMBER

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 13, NO. 12, DECEMBER IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 3, NO. 2, DECEMBER 204 695 On Spatal Capacty of Wreless Ad Hoc Networks wth Threshold Based Schedulng Yue Lng Che, Student Member, IEEE, Ru Zhang, Member,

More information

The Application of Interpolation Algorithms in OFDM Channel Estimation

The Application of Interpolation Algorithms in OFDM Channel Estimation The Applcaton of Interpolaton Algorthms n OFDM Estmaton Xjun ZHANG 1,, Zhantng YUAN 1, 1 School of Electrcal and Informaton Engneerng, Lanzhou Unversty of Technology, Lanzhou, Gansu 730050, Chna School

More information

Power Control for Full-Duplex Relay-Enhanced Cellular Networks With QoS Guarantees

Power Control for Full-Duplex Relay-Enhanced Cellular Networks With QoS Guarantees SPECIAL SECTION ON FUTURE NETWORKS: ARCHITECTURES, PROTOCOLS, AND APPLICATIONS Receved January 9, 07, accepted February, 07, date of publcaton March 5, 07, date of current verson Aprl 4, 07. Dgtal Object

More information

Fuzzy Logic Power Control in Cognitive Radio

Fuzzy Logic Power Control in Cognitive Radio Fuzzy Logc ower Control n Cogntve Rado Zeljko Tabakovc Croatan ost and Electronc Communcatons Agency Jursceva 3 Zagreb, Croata zeljkotabakovc@telekomhr Sonja Grgc, Mslav Grgc Unversty of Zagreb, Faculty

More information

Power Allocation in Wireless Relay Networks: A Geometric Programming-Based Approach

Power Allocation in Wireless Relay Networks: A Geometric Programming-Based Approach ower Allocaton n Wreless Relay Networks: A Geometrc rogrammng-based Approach Khoa T. han, Tho Le-Ngoc, Sergy A. Vorobyov, and Chntha Telambura Department of Electrcal and Computer Engneerng, Unversty of

More information

Bit Error Probability of Cooperative Diversity for M-ary QAM OFDM-based system with Best Relay Selection

Bit Error Probability of Cooperative Diversity for M-ary QAM OFDM-based system with Best Relay Selection 011 Internatonal Conerence on Inormaton and Electroncs Engneerng IPCSIT vol.6 (011) (011) IACSIT Press, Sngapore Bt Error Proalty o Cooperatve Dversty or M-ary QAM OFDM-ased system wth Best Relay Selecton

More information

An Energy Efficient Hierarchical Clustering Algorithm for Wireless Sensor Networks

An Energy Efficient Hierarchical Clustering Algorithm for Wireless Sensor Networks An Energy Effcent Herarchcal Clusterng Algorthm for Wreless Sensor Networks Seema Bandyopadhyay and Edward J. Coyle School of Electrcal and Computer Engneerng Purdue Unversty West Lafayette, IN, USA {seema,

More information

Power Control for Wireless Data

Power Control for Wireless Data Power Control for Wreless Data Davd Goodman Narayan Mandayam Electrcal Engneerng WINLAB Polytechnc Unversty Rutgers Unversty 6 Metrotech Center 73 Brett Road Brooklyn, NY, 11201, USA Pscataway, NJ 08854

More information

Efficient Large Integers Arithmetic by Adopting Squaring and Complement Recoding Techniques

Efficient Large Integers Arithmetic by Adopting Squaring and Complement Recoding Techniques The th Worshop on Combnatoral Mathematcs and Computaton Theory Effcent Large Integers Arthmetc by Adoptng Squarng and Complement Recodng Technques Cha-Long Wu*, Der-Chyuan Lou, and Te-Jen Chang *Department

More information

A QoS-Aware Scheduling Algorithm Based on Service Type for LTE Downlink

A QoS-Aware Scheduling Algorithm Based on Service Type for LTE Downlink Proceedngs of the nd Internatonal Conference on Computer Scence and Electroncs Engneerng (ICCSEE 13) A QoS-Aware Schedulng Algorthm Based on Servce Type for LTE Downlnk Wehong Fu, Qnglang Kong, Wexn Tan,

More information

Distributed Interference Alignment in Cognitive Radio Networks

Distributed Interference Alignment in Cognitive Radio Networks Dstrbuted Interference Algnment n Cogntve Rado Networks Y Xu and Shwen Mao Department of Electrcal and Computer Engneerng, Auburn Unversty, Auburn, AL, USA Abstract In ths paper, we nvestgate the problem

More information

Optimal Transmission Scheduling of Cooperative Communications with A Full-duplex Relay

Optimal Transmission Scheduling of Cooperative Communications with A Full-duplex Relay 1 Optmal Transmsson Schedulng of Cooperatve Communcatons wth A Full-duplex Relay Peng L Member IEEE Song Guo Senor Member IEEE Wehua Zhuang Fellow IEEE Abstract Most exstng research studes n cooperatve

More information

Priority based Dynamic Multiple Robot Path Planning

Priority based Dynamic Multiple Robot Path Planning 2nd Internatonal Conference on Autonomous obots and Agents Prorty based Dynamc Multple obot Path Plannng Abstract Taxong Zheng Department of Automaton Chongqng Unversty of Post and Telecommuncaton, Chna

More information