Fast Hybrid DFT/DCT Architecture for OFDM in Cognitive Radio System
|
|
- Maurice Bishop
- 5 years ago
- Views:
Transcription
1 Fast Hybrid DF/D Architecture for OFDM in ognitive Radio System Zhu hen, Moon Ho Lee, Senior Member, EEE, hang Joo Kim 3 nstitute of nformation&ommunication, honbuk ationa University, Jeonju, ,Korea 3 Radio technoogy Research Group of ER E-mai: {chenzhu, moonho}@chonbukackr 3 cjkim@etrirekr Abstract n this paper, the sparse matrix decompositions for DF matrix and D matrix are proposed Based on these propositions, we deveop a fast hybrid DF and D architecture for OFDM n addition, we address the OFDM based on DF or D in ognitive Radio system An adaptive OFDM based on DF or D in ognitive Radio system has the capacity to nuify individua carriers to avoid interference to the icensed users herefore, there coud be a consideraby arge number of zero-vaued inputs/outputs for the DF/DF or D/D on the OFDM transceiver Hence, the standard methods of DF and D are no onger efficient due to the wasted operations on zero Based on this observation, we present a transform decomposition on two dimensiona (-D) systoic array for DF/DF and D/D, this agorithm can achieve an efficient computation for OFDM in ognitive Radio system ndex erms D, DF, OFDM, ognitive Radio ntroduction Orthogona frequency division mutipexing (OFDM) has recenty received considerabe attention for its efficient usage of avaiabe frequency bandwidth and robustness to frequency seective fading environments OFDM systems normay use the discrete Fourier transform (DF) for muticarrier moduation of the data to be transmitted However, under certain channe conditions, throughput is enhanced when using the discrete cosine transform (D) rather than the DF[] herefore, it has high practica vaue to design a hybrid DF and D architecture for OFDM he basic idea of ognitive Radio (R) is to provide a system with the abiity to sense avaiabe spectrum sots not occupied by existing users and detect whether any primary user is demanding the bands that the R system currenty uses Since R ony used non-contiguous band in the spectrum, OFDM is considered a suitabe transmission technique [][3] n spectrum pooing, OFDM is proposed as the baseband transmission scheme hose subcarries which cause the interference to the icensed user shoud be nuified herefore, there are zero-vaued inputs for the DF or D of the transmitter and zero-vaued outputs for the DF or D of the receiver When zero vaued inputs/outputs outnumber non-zero inputs/outputs, the standard DF/DF or D/D used for OFDM is no onger efficient f there is a arge number of zero inputs/outputs, we propose to use computationay efficient DF/DF and D/D based on the transform decomposition [-6] he rest paper is organized as foows n Section, the OFDM-ognitive Radio framework wi be introduced n Section 3, we wi present the fast hybrid DF and D architecture for OFDM he efficient computation for DF and D in OFDM- ognitive Radio system is discussed in Section Finay, Section 5 concuded this paper OFDM-ognitive Radio Framework A genera schematic of an OFDM-ognitive Radio (OFDM-R) transceiver is shown in Fig Without oss of generaity, a high speed data stream, x( n ), is moduated hen, the moduated data stream is spit into sower data streams using a seria-to-parae (S/P) converter ote that the subcarriers in the OFDM-R transceiver do not need to be a active as in conventiona OFDM Moreover, active subcarriers are ocated in the unoccupied spectrum bands, which are determined by dynamic spectrum sensing and channe estimation
2 techniques he DF or D is then appied to these moduated subcarrier signas Prior to transmission, a 3 Fast Hybrid D and DF Architecture for OFDM n this section, we derive the recursive formuas for D and DF matrices he resuts show that the D and DF matrices can be unified by using the same sparse matrix decomposition agorithm and recursive architecture within some characters changed (a) ransmitter (b) Receiver Fig Schematic of an OFDM transceiver guard interva with a ength greater than the channe deay spread is added to each OFDM-R symbo using the cycic prefix (P) bock in order to mitigate the effects of intersymbo interference Foowing the parae-to-seria (P/S) conversion, the baseband OFDM-R signa, sn ( ), is then passed through the transmitter radio frequency (RF) chain, which ampifies the signa and up converts it to the desired center frequency he receiver performs the reverse operation of the transmitter, mixing the RF signa to baseband for processing, yieding the signa rn ( ) hen, the signa is converted into parae streams using S/P converter, the P is discarded, and DF or D is then appied After compensating distortion introduced by the channe using per-tone equaization, the data in the active subcarriers is mutipexed using a P/S converter, and demoduated into a reconstructed version of the origina high-speed input, x '( n ) From this system overview, we observe that the DF (D) and DF (D) bocks are critica components of the transceiver n the next section, we wi investigate the hybrid architecture of DF and D (we confine a the foowing discussions on DF and D due to the same computation structure of DF and DF as we as D and D) Based on this architecture we can provide two schemes to achieve OFDM: OFDM based on DF and OFDM based on D, the adopted scheme wi be determined by channe conditions Whie in Section, we wi describe how it is possibe to impement efficient versions of these bocks 3 Sparse matrix decomposition for D matrix A typica D matrix is the D- case (we consider D- in this paper), which is defined by () k, / Bk cos, kn, 0,,,, () kn /, k 0 Bk From the definition,, k,,, the -by- D matrix is given as / / / / 3 5 7, () i cos( i / ) is the cosine unit for D computations Before we introduce a simpe matrix factorization agorithm, we define some matrices he row permutation matrix Pr is defined by Pr and Pr pri, j,, (3) pri, j, if i j,0 j /, and pri, j, if i ( j ) mod,0 j / pri, j 0, others i, j {0,,, } Further, we define a reversibe permutation matrix Pc as foows, / / 0 0 Pc Pc, () / 0 0 / 0 hus we can write 0 Pr Pc, (5) 0 B
3 denotes the transpose of a matrix and 3 B 3 Generay, the permuted D can be recursivey formed by using matrix / / / 0 Pr Pc / / 0 B /, (6) B can be cacuated by: / f( mn, ) B, f ( m,) m, (7) / mn, / f ( m, ) f ( m, n) f ( m,), m, n {,,, / } Furthermore, the submatrix B can be represented by B K D, () K 0 D diag,, n n and i i, i { 0,,, } From (6) and (), the D matrix can be written by (9) Pr Pc 0 K 0 0 D Finay, the genera recursive form is given by 0 0 Pr Pr 0 K 0 K 0 Pc 0 D 0 (0) Pc 0 D o simpify (0), we can rewrite it by using 0 0 Pr 0 K 0 K 0 0 D 0 Pc () 0 D he butterfy data fow diagram corresponding to () is shown as in Fig 3 Sparse matrix decomposition for DF matrix he DF is a Fourier representation of a given sequence x (m), 0 m and it is defined by nk X ( k) x( n) W, 0 k, () n 0 j/ e W, j he -point DF matrix can be denoted by nk F W hus we can write a permuted -by- DF matrix by using F 0 F F Pr, (3) E 0 j E Generay, the -by- j permuted DF matrix is F 0 F F, () Pr 0 E F F, and the submatrix E can be written by E Pr F W, (5) 0 W diag W, W,, W, and W is the compex unit for -point DF matrix Simiar to (9), we can rewrite the permuted DF matrix by using F 0 F 0 Pr F W 0 F 0 0 (6) 0 Pr 0 F 0 W As a resut, the genera recursive form for DF matrix can be represented by F Pr F 0 0 Pr F 0 Pr 0 Pr 0 0 (7) 0 W 0 W
4 Fig Butterfy data fow diagram of the proposed computation of the -by- D matrix Fig3 Butterfy data fow diagram of the proposed computation of the -by- DF matrix eary, the form of (7) is the same as that of (), we ony need to change K to Pr and D to W, with the parameters {,,,, / } he butterfy data fow diagram corresponding to (7) is shown as in Fig3 As iustrated in Fig, and Fig3, we find that the DF computation can be from the computation of the D matrix by repacing the submatrix D to W, and the permutation matrix K Pr to As a resut, a simpe generaized bock diagram for D and DF hybrid architecture and its fast agorithm can be shown as in Fig n this figure, we joint D and DF computations into one chip or one kind of processing architecture, we use one switching box to contro the output data fow his resut is usefu to deveop the united chip for OFDM K / / / Pr / D / W / / / Efficient omputation for DF and D in OFDM-R System n this section we wi introduce the agorithms on -D systoic array for DF and D, which can resut in a faster execution time in OFDM-R system ransform decomposition on -D systoic array for DF Based on the definition of DF in (), we assume that ony L outputs are nonzero and that there exists a P such that P divides and define Q / P, using the variabe substitution nq n, () 0,,, P, n 0,,, Q, we can rewrite the DF as foows: Q P ( nq n) k n0 0 Q P k p nk xnq ( n) W W, (9) n0 0 X( k) x( nqn ) W Fig A simpe D and DF hybrid architecture
5 p denotes reduction moduo P, and k takes on any L vaues between 0 and Breaking this up into two equations X n and Q X( k) X ( k ) W, (0) P 0 P n 0 n nj P p nk ( j) x( nq n ) W () x ( nw ) j 0,,, P, () 0 n nj P x ( n ) x( nq n ) (3) n nspecting (), it can be seen that sequence over which the DF has to be computed is two dimensiona and hence depends on n hus a DF has to be computed for each different vaue of n, and there are Q such ength P DF s We consider the case L outputs are nonzero Because the index K ony consists of L nonzero vaues, ony L twidde factors are mutipied with each X ( k p) for n 0,,, Q n his mutipication part resuts in a reduction of the computation he mathematica derivation for the transform decomposition agorithm with zero inputs is rather simiar, detais can be found in [] ransform decomposition on -D systoic array for D Reposing on a cose study of the D [7], we can aso achieve the transform decomposition for -D D he D of a date sequence f ( n ), n0,,, is defined by () k Fk ( ) / Bk f( n)cos, () n0 /, k 0 Bk, k,,, Supposing is even, we define a new point sequence x( n ) by: x( n) f( n), x ( n) f(), n0,,, /, (5) substituting (5) into (), it can be rewrite as () k Fk ( ) / k ( ) xn ( )cos (6) n0 hus the D Fk ( ) can be evauated as jk Fk ( ) / k ( )Re exp( ) Zk ( ), (7) the date sequence x(n) s DF is nk Zk ( ) xnw ( ) () n0 jk Using symbo A to denote / ( k)exp( ), we can obtain a concise equation Fk ( ) Re AZk ( ) (9) From the anaysis of transform decomposition for -D DF previousy, we can easiy obtain the transform decomposition for -D Z( k ) as foows: Q Zk ( ) Z ( k ) W, (30) P n 0 n Z ( j) x( nqn ) W n 0 P nj xn( ) WP 0 p nj P nk j 0,,, P, (3) and PQ, n Qn n, n 0,,, P, n 0,,, Q Substituting (30) into (9), we obtain: Q nk Fk ( ) Re Z ( k ) W A n p (3) n 0 Obviousy, we can aso impement the efficient computation for D Fig5 Bock diagram over transform decomposition for D We show the computationa structure for D in Fig5 Basicay the computation can be divided into two stages: DF and mutipications with recombination
6 3 Simuation Resuts he number of mutipications for -point radix - FF is M DF ( / )og (33) Under the definition of D-, the precise count of rea mutipications is shown in the beow [], M og (3) D Based on the transform decomposition for -D DF and D, we make quantitative anaysis on the computationa compexity by counting the number of compex mutipications n this case, the number of mutipications for DF and D are presented as foowing: M D DF og P ( Q ) L (35) MDD og P Q( Q) L (36) system when ony a sma number of subcarriers are avaiabe for ognitive Radio 5 oncusion n this paper, we present a fast hybrid DF and D architecture for OFDM based on the decomposition for DF and D matrix n terms of the decomposition for -D DF and D, we proposed an efficient computation for DF and D which can resut in a faster execution time in the case that a arge number of subcarriers are nuified in the OFDM-R system 6 Acknowedgement his work was partia supported by the M, under R supervised by A, ER SO and the Korea Foundation for nternationa ooperation of Science & echnoogy (KOS) through a grant provide by the Korean Ministry of Science & echnoogy (MOS) in References Fig6 omparison of computation between the traditiona way and the transform decomposition for -D DF/D n Fig6 we compare the computation compexity between the conventiona method and the transform decomposition for -D DF and D During the simuation, we assume the tota number of subcarriers for OFDM is 0, when the number of nonzero outputs L is reativey few, we can get significanty reduced computationa compexity for both DF and D based on the transform decomposition For exampe, when ony 6 out of 0 subcarriers are avaiabe for R, transform decomposition offers % and 37% saving of computations for the OFDM-DF system and the OFDM-D system respectivey Because the DF/DF or D/D are the most computationa intensive parts in an OFDM transceiver, the savings can significanty reduce the computationa compexity of the overa system herefore, transform decomposition for -D DF or -D D can be an efficient option for an OFDM in ognitive Radio [] Giridhar D Mandyam, On the Discrete osine ransform and OFDM Systems, EEE nternationa onference on Acoustics, Speech, and Signa Processing, vo, pp Apri 003 [] J D Poston and W D Horne, Discontiguous OFDM considerations for dynamic spectrum access in ide V channes, in Proc EEE nt Symp ew Frontiers Dynamic Spectr Access etworks, vo, (Batimore, MD, USA), pp , ov 005 [3] M P Wyie-Green, Dynamic spectrum sensing by mutiband OFDM radio for interference mitigation, in Proc EEE nt Symp ew Frontiers Dynamic Spectr Access etworks, vo, (Batimore, MD, USA), pp 69 65, ov 005 [] Henrik V Sorensen and Sidney Burrus, Efficient omputation of the DF with Ony a Subset of nput or Output Points, EEE rans on Signa Processing, Mar 993 [5] Qiwei Zhang, Andre BJ Kokkeer, Gerard JM Smit, An Efficient FF for OFDM Based ognitive Radio On A Reconfigurabe Architecture, EEE nternationa onference on ommunication, Jun 007, Gasgow, UK [6] Moon Ho Lee, High speed mutidimensiona systoic arrays for discrete Fourier transform, EEE rans ircuits Syst, vo 39, pp 76 79, Dec 99 [7] Moon Ho Lee, On computing -D Systoic Agorithm for Discrete osine ransform, EEE rans ircuits Syst, vo37, no0 990 [] H V Sorensen, D L Jones, M Heideman, and S Burrus, "Rea-vaued fast Fourier transform agorithms," EEE rans Acoust Speech Sig Processing ASSP-35, pp9 63, 97
A Low Complexity VCS Method for PAPR Reduction in Multicarrier Code Division Multiple Access
0 JOURNAL OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA, VOL. 5, NO., JUNE 007 A Low Compexity VCS Method for PAPR Reduction in Muticarrier Code Division Mutipe Access Si-Si Liu, Yue iao, Qing-Song Wen,
More informationCo-channel Interference Suppression Techniques for STBC OFDM System over Doubly Selective Channel
Co-channe Interference Suppression Techniques for STBC OFDM System over Douby Seective Channe Jyoti P. Patra Dept. of Eectronics and Communication Nationa Institute Of Technoogy Rourkea-769008, India E
More informationRate-Allocation Strategies for Closed-Loop MIMO-OFDM
Rate-Aocation Strategies for Cosed-Loop MIMO-OFDM Joon Hyun Sung and John R. Barry Schoo of Eectrica and Computer Engineering Georgia Institute of Technoogy, Atanta, Georgia 30332 0250, USA Emai: {jhsung,barry}@ece.gatech.edu
More informationBER Performance Analysis of Cognitive Radio Physical Layer over Rayleigh fading Channel
Internationa Journa of Computer ppications (0975 8887) Voume 5 No.11, Juy 011 BER Performance naysis of Cognitive Radio Physica Layer over Rayeigh fading mandeep Kaur Virk Dr. B R mbedkar Nationa Institute
More informationUniversity of Bristol - Explore Bristol Research. Peer reviewed version. Link to published version (if available): /GLOCOM.2003.
Coon, J., Siew, J., Beach, MA., Nix, AR., Armour, SMD., & McGeehan, JP. (3). A comparison of MIMO-OFDM and MIMO-SCFDE in WLAN environments. In Goba Teecommunications Conference, 3 (Gobecom 3) (Vo. 6, pp.
More informationImproving the Active Power Filter Performance with a Prediction Based Reference Generation
Improving the Active Power Fiter Performance with a Prediction Based Reference Generation M. Routimo, M. Sao and H. Tuusa Abstract In this paper a current reference generation method for a votage source
More informationChannel Division Multiple Access Based on High UWB Channel Temporal Resolution
Channe Division Mutipe Access Based on High UWB Channe Tempora Resoution Rau L. de Lacerda Neto, Aawatif Menouni Hayar and Mérouane Debbah Institut Eurecom B.P. 93 694 Sophia-Antipois Cedex - France Emai:
More informationPerformance of Single User vs. Multiuser Modulation in Wireless Multicarrier (MC) Communications
erformance of Singe User vs. Mutiuser Moduation in Wireess Muticarrier (MC) Communications Anwaru Azim, ecturer, East West University Bangadesh Abstract-- he main objective of this paper is to compare
More informationTop Down Design of Joint MODEM and CODEC Detection Schemes for DSRC Coded-FSK Systems over High Mobility Fading Channels
Top Down Design of Joint MODEM and CODEC Detection Schemes for DSRC Coded-FSK Systems over High Mobiity Fading Channes Juinn-Horng Deng, Feng-Chin Hsiao, and Yi-Hsin Lin Department of Communications Engineering
More informationAvailability Analysis for Elastic Optical Networks with Multi-path Virtual Concatenation Technique
Progress In Eectromagnetics Research Symposium Proceedings, Guangzhou, China, Aug. 25 28, 2014 849 Avaiabiity Anaysis for Eastic Optica Networks with Muti-path Virtua Concatenation Technique Xiaoing Wang
More informationSecure Physical Layer Key Generation Schemes: Performance and Information Theoretic Limits
Secure Physica Layer Key Generation Schemes: Performance and Information Theoretic Limits Jon Waace Schoo of Engineering and Science Jacobs University Bremen, Campus Ring, 879 Bremen, Germany Phone: +9
More informationEffect of Estimation Error on Adaptive L-MRC Receiver over Nakagami-m Fading Channels
Internationa Journa of Appied Engineering Research ISSN 973-456 Voume 3, Number 5 (8) pp. 77-83 Research India Pubications. http://www.ripubication.com Effect of Estimation Error on Adaptive -MRC Receiver
More informationResource Allocation via Linear Programming for Multi-Source, Multi-Relay Wireless Networks
Resource Aocation via Linear Programming for Muti-Source, Muti-Reay Wireess Networs Nariman Farsad and Andrew W Ecford Dept of Computer Science and Engineering, Yor University 4700 Keee Street, Toronto,
More informationRateless Codes for the Gaussian Multiple Access Channel
Rateess Codes for the Gaussian Mutipe Access Channe Urs Niesen Emai: uniesen@mitedu Uri Erez Dept EE, Te Aviv University Te Aviv, Israe Emai: uri@engtauaci Devavrat Shah Emai: devavrat@mitedu Gregory W
More informationPerformance Comparison of Cyclo-stationary Detectors with Matched Filter and Energy Detector M. SAI SINDHURI 1, S. SRI GOWRI 2
ISSN 319-8885 Vo.3,Issue.39 November-14, Pages:7859-7863 www.ijsetr.com Performance Comparison of Cyco-stationary Detectors with Matched Fiter and Energy Detector M. SAI SINDHURI 1, S. SRI GOWRI 1 PG Schoar,
More informationFREQUENCY-DOMAIN TURBO EQUALIZATION FOR SINGLE CARRIER MOBILE BROADBAND SYSTEMS. Liang Dong and Yao Zhao
FREQUENCY-DOMAIN TURBO EQUALIZATION FOR SINGLE CARRIER MOBILE BROADBAND SYSTEMS Liang Dong and Yao Zhao Department of Eectrica and Computer Engineering Western Michigan University Kaamazoo, MI 49008 ABSTRACT
More informationTHE TRADEOFF BETWEEN DIVERSITY GAIN AND INTERFERENCE SUPPRESSION VIA BEAMFORMING IN
THE TRADEOFF BETWEEN DIVERSITY GAIN AND INTERFERENCE SUPPRESSION VIA BEAMFORMING IN A CDMA SYSTEM Yan Zhang, Laurence B. Mistein, and Pau H. Siege Department of ECE, University of Caifornia, San Diego
More informationPROPORTIONAL FAIR SCHEDULING OF UPLINK SINGLE-CARRIER FDMA SYSTEMS
PROPORTIONAL FAIR SCHEDULING OF UPLINK SINGLE-CARRIER SYSTEMS Junsung Lim, Hyung G. Myung, Kyungjin Oh and David J. Goodman Dept. of Eectrica and Computer Engineering, Poytechnic University 5 Metrotech
More informationAn Efficient Implementation of NC-OFDM Transceivers for Cognitive Radios
An Efficient Implementation of NC-OFDM Transceivers for Cognitive Radios Rakesh Rajbanshi Alexander M. Wyglinski Gary J. Minden Information and Telecommunication Technology Center The University of Kansas,
More informationPerformance Measures of a UWB Multiple-Access System: DS/CDMA versus TH/PPM
Performance Measures of a UWB Mutipe-Access System: DS/CDMA versus TH/PPM Aravind Kaias and John A. Gubner Dept. of Eectrica Engineering University of Wisconsin-Madison Madison, WI 53706 akaias@wisc.edu,
More informationCHANNEL ESTIMATION USING EXTENDED KALMAN FILTER WITH SLICED MULTI MODULUS BLIND EQUALIZATION ALGORITHM (SMMA)
Journa of Theoretica and Appied nformation Technoogy 005-06 JATT & LLS. A rights reserved. SSN: 99-8645 www.jatit.org E-SSN: 87-395 CHANNEL ESTMATON USNG EXTENDED KALMAN FLTE WTH SLCED MULT MODULUS BLND
More informationCommunication Systems
Communication Systems 1. A basic communication system consists of (1) receiver () information source (3) user of information (4) transmitter (5) channe Choose the correct sequence in which these are arranged
More informationFBMC/OQAM for the Asynchronous Multi-User MIMO Uplink
FBMC/OQAM for the Asynchronous Muti-User MIMO Upin Yao Cheng, Peng Li, and Martin Haardt Communications Research Laboratory, Imenau University of Technoogy P. O. Box 100565, D-98694 Imenau, Germany {y.cheng,
More informationEffect of Interfering Users on the Modulation Order and Code Rate for UWB Impulse-Radio Bit-Interleaved Coded M-ary PPM
Effect of Interfering Users on the Moduation Order and Code Rate for UWB Impuse-Radio Bit-Intereaved Coded M-ary PPM Ruben Merz and Jean-Yves Le Boudec EPFL, Schoo of Computer and Communication Sciences
More informationSuppression of ISI Caused by Sampling Time Offset in IFDMA Systems
Suppression of ISI Caused by Samping Time Offset in IFDA Systems Aexander Arkhipov, ichae Schne German Aerospace Center (DLR), Inst. of Communications and Navigation, D-82234, Wessing, Germany. Phone/e-mai:
More informationResource Allocation for Network-Integrated Device-to-Device Communications Using Smart Relays
Resource Aocation for Network-Integrated Device-to-Device Communications Using Smart Reays Monowar Hasan and Ekram Hossain Department of Eectrica and Computer Engineering, University of Manitoba, Winnipeg,
More informationDistributed Resource Allocation for Relay-Aided Device-to-Device Communication Under Channel Uncertainties: A Stable Matching Approach
Distributed Resource Aocation for Reay-Aided Device-to-Device Communication Under Channe Uncertainties: A Stabe Matching Approach Monowar Hasan, Student Member, IEEE, and Ekram Hossain, Feow, IEEE Abstract
More informationJoint Optimal Power Allocation and Relay Selection with Spatial Diversity in Wireless Relay Networks
Proceedings of SDR'11-WInnComm-Europe, 22-24 Jun 2011 Joint Optima Power Aocation and Reay Seection with Spatia Diversity in Wireess Reay Networks Md Habibu Isam 1, Zbigniew Dziong 1, Kazem Sohraby 2,
More informationWireless Communications
Wireess Communications Ceuar Concept Hamid Bahrami Reference: Rappaport Chap3 Eectrica & Computer Engineering Statements of Probems Soving the probem of Spectra congestion System Capacity A system-eve
More informationResource Allocation via Linear Programming for Fractional Cooperation
1 Resource Aocation via Linear Programming for Fractiona Cooperation Nariman Farsad and Andrew W Ecford Abstract In this etter, resource aocation is considered for arge muti-source, muti-reay networs empoying
More informationGeorgia Institute of Technology. simulating the performance of a 32-bit interconnect bus. referenced to non-ideal planes. A transient simulation
Power ntegrity/signa ntegrity Co-Simuation for Fast Design Cosure Krishna Srinivasan1, Rohan Mandrekar2, Ege Engin3 and Madhavan Swaminathan4 Georgia nstitute of Technoogy 85 5th St NW, Atanta GA 30308
More informationBest Relay Selection Using SNR and Interference Quotient for Underlay Cognitive Networks
IEEE ICC 1 - Wireess Communications Symposium Best Reay Seection Using SNR and Interference Quotient for Underay Cognitive Networks Syed Imtiaz Hussain 1, Mohamed M. Abdaah 1, Mohamed-Sim Aouini 1,, Mazen
More informationA Novel Method for Doppler and DOD- DOA Jointly Estimation Based on FRFT in Bistatic MIMO Radar System
7 Asia-Pacific Engineering and Technoogy Conference (APETC 7) ISBN: 978--6595-443- A Nove Method for Dopper and DOD- DOA Jointy Estimation Based on FRFT in Bistatic MIMO Radar System Derui Song, Li Li,
More informationDealing with Link Blockage in mmwave Networks: D2D Relaying or Multi-beam Reflection?
Deaing with Lin Bocage in mmwave etwors: DD Reaying or Muti-beam Refection? Mingjie Feng, Shiwen Mao Dept. Eectrica & Computer Engineering Auburn University, Auburn, AL 36849-5, U.S.A. Tao Jiang Schoo
More informationBlind Multiuser Detection in Asynchronous DS-CDMA Systems over Nakagami-m Fading Channels
Bind Mutiuser Detection in Asynchronous DS-CDMA Systems over akagami-m Fading Channes Vinay Kumar Pamua JU Kakinada, Andhra Pradesh, India 533 003 pamuavk@yahoo.com ABSRAC his paper presents a technique
More informationADAPTIVE ITERATION SCHEME OF TURBO CODE USING HYSTERESIS CONTROL
ADATIV ITRATION SCHM OF TURBO COD USING HYSTRSIS CONTROL Chih-Hao WU, Kenichi ITO, Yung-Liang HUANG, Takuro SATO Received October 9, 4 Turbo code, because of its remarkabe coding performance, wi be popuar
More informationCopyright 2000 IEEE. IEEE Global Communications Conference (Globecom 2000), November 27 - December 1, 2000, San Francisco, California, USA
Copyright 2000 EEE. EEE Goba Communications Conference (Gobecom 2000), November 27 - December 1, 2000, San Francisco, Caifornia, USA Persona use of this materia is permitted. owever, permission to reprint/repubish
More informationCHANNEL ESTIMATION PERFORMANCE FOR ZERO-OVERHEAD CHANNEL ACCESS IN MOBILE SENSOR NETWORKS
CANNEL ESTIMATION PERFORMANCE FOR ZERO-OVEREAD CANNEL ACCESS IN MOBILE SENSOR NETWORKS John E. Keider, Ghassan Maaoui, Steve Gifford, and Scott Chuprun Genera Dynamics C4 Systems Scottsdae, AZ, 8557 Brian
More informationJoint Optimization of Scheduling and Power Control in Wireless Networks: Multi-Dimensional Modeling and Decomposition
This artice has been accepted for pubication in a future issue of this journa, but has not been fuy edited. Content may change prior to fina pubication. Citation information: DOI 10.1109/TMC.2018.2861859,
More informationWireless Communications
Wireess Communications Mutipe Access Hamid Bahrami Eectrica & Computer Engineering Communication System Bock Diagram Dupexing Dupexing: transmit and receive at the same time Exampe: teephone, how about
More informationFOR energy limited data networks, e.g., sensor networks,
578 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO., DECEMBER 009 An Optima Power Aocation Scheme for the STC Hybrid ARQ over Energy Limited Networks Hongbo Liu, Member, IEEE, Leonid Razoumov,
More informationCross-layer queuing analysis on multihop relaying networks with adaptive modulation and coding K. Zheng 1 Y. Wang 1 L. Lei 2 W.
www.ietd.org Pubished in IET Communications Received on 18th June 2009 Revised on 30th Juy 2009 ISSN 1751-8628 Cross-ayer queuing anaysis on mutihop reaying networks with adaptive moduation and coding
More informationModel of Neuro-Fuzzy Prediction of Confirmation Timeout in a Mobile Ad Hoc Network
Mode of Neuro-Fuzzy Prediction of Confirmation Timeout in a Mobie Ad Hoc Network Igor Konstantinov, Kostiantyn Poshchykov, Sergej Lazarev, and Oha Poshchykova Begorod State University, Pobeda Street 85,
More informationPower Spectrum Optimization for Interference Mitigation via Iterative Function Evaluation
Power Spectrum Optimization for Interference Mitigation via Iterative Function Evauation Hayssam Dahrouj, Wei Yu, Taiwen Tang, and Steve Beaudin Eectrica and Computer Engineering Dept., University of Toronto,
More informationSatellite Link Layer Performance Using Two Copy SR-ARQ and Its Impact on TCP Traffic
Sateite Link Layer Performance Using Two Copy SR-ARQ and Its Impact on TCP Traffic Jing Zhu and Sumit Roy Department of Eectrica Engineering, University of Washington Box 352500, Seatte, WA 98195, USA
More informationCascade-Net: a New Deep Learning Architecture for OFDM Detection
: a New Deep Learning Architecture for OFDM Detection Qisheng Huang 1, Chunming Zhao 1, Ming Jiang 1, Xiaoming Li 1, Jing Liang 1 Nationa Mobie Communications Research Lab., Southeast University, Nanjing
More informationUtility-Proportional Fairness in Wireless Networks
IEEE rd Internationa Symposium on Persona, Indoor and Mobie Radio Communications - (PIMRC) Utiity-Proportiona Fairness in Wireess Networks G. Tychogiorgos, A. Gkeias and K. K. Leung Eectrica and Eectronic
More informationBlock-Level Unitary Query: Incorporating Orthogonal-like Space-time Code with Query Diversity for MIMO Backscatter RFID
1 Bock-Leve Unitary Query: Incorporating Orthogona-ike Space-time Code with Query Diversity for MIMO Backscatter RFID Chen He, Member, IEEE, Z. Jane Wang, Senior Member, IEEE, and Victor C.M. Leung, Feow,
More informationLSTM TIME AND FREQUENCY RECURRENCE FOR AUTOMATIC SPEECH RECOGNITION
LSTM TIME AND FREQUENCY RECURRENCE FOR AUTOMATIC SPEECH RECOGNITION Jinyu Li, Abderahman Mohamed, Geoffrey Zweig, and Yifan Gong Microsoft Corporation, One Microsoft Way, Redmond, WA 98052 { jinyi, asamir,
More informationDESIGN OF SHIP CONTROLLER AND SHIP MODEL BASED ON NEURAL NETWORK IDENTIFICATION STRUCTURES
DESIGN OF SHIP CONROLLER AND SHIP MODEL BASED ON NEURAL NEWORK IDENIFICAION SRUCURES JASMIN VELAGIC, FACULY OF ELECRICAL ENGINEERING SARAJEVO, BOSNIA AND HERZEGOVINA, asmin.veagic@etf.unsa.ba ABSRAC his
More informationGeneralized constrained energy minimization approach to subpixel target detection for multispectral imagery
Generaized constrained energy minimization approach to subpixe target detection for mutispectra imagery Chein-I Chang, MEMBER SPIE University of Maryand Batimore County Department of Computer Science and
More informationA capacity-approaching coded modulation scheme for non-coherent fading channels
Louisiana State University LSU Digita Commons LSU Master's Theses Graduate Schoo 008 A capacity-approaching coded moduation scheme for non-coherent fading channes Youngjeon Cho Louisiana State University
More informationWiMAX Based 60 GHz Millimeter-Wave Communication for Intelligent Transport System Applications
Internationa Journa of Wireess & Mobie Networks (IJWMN) Vo. 3, No. 2, Apri 211 WiMAX Based 6 GHz Miimeter-Wave Communication for Inteigent Transport System Appications 1 Bera Rabindranath, 2 Sarkar Subir
More informationarxiv: v1 [cs.it] 22 Jul 2014
MODULATION FORMATS AND WAVEFORMS FOR THE PHYSICAL LAYER OF 5G WIRELESS NETWORKS: WHO WILL BE THE HEIR OF OFDM? Paoo Banei, Stefano Buzzi, Giuio Coavope, Andrea Modenini, Fredrik Rusek, and Aessandro Ugoini
More informationAdaptive Bit and Power Allocation for Rate and Margin Maximization in V-BLAST System
Revista Científica Periódica - Teecomunicações ISSN 56-338 Adaptive Bit and Power Aocation for Rate and argin aximization in V-BAST System Dror eiri and Irving Kaet Aeis Photonics, Netanya, Israe (emai:
More informationarxiv: v4 [physics.soc-ph] 31 Dec 2013
A Cascading Faiure Mode by Quantifying Interactions Junjian Qi and Shengwei Mei Department of Eectrica Engineering, Tsinghua University, Beijing, China 100084 arxiv:1301.2055v4 [physics.soc-ph] 31 Dec
More informationOrthogonal Multicode Channelization Applied to Subsampling Digital UWB Receiver
Orthogona Muticode Channeization Appied to Subsamping Digita UWB Receiver Yves Vanderperren, Geert Leus, Wim Dehaene EE Dept. ESAT-MICAS), Kathoieke Universiteit Leuven, Begium Facuty of EE, Mathematics
More informationSpatial Characteristics of 3D MIMO Wideband Channel in Indoor Hotspot Scenario at 3.5 GHz
Spatia Characteristics of 3D MIMO Wideband Channe in Indoor Hotspot Scenario at 3.5 GHz ei Tian Jianhua Zhang Yuxiang Zhang State Key ab. of Networking and Switching Tech. Beijing Univ. of osts and Teecom.
More informationB.Sathish Kumar 1, K.R.Shankar Kumar 2 1,2
A ove Approach of Linear Parae nterference Canceation in Upin OFDMA Systems with Carrier Freuency Offsets B.Sathish umar 1,.R.Shanar umar 1, Department of Eectronics Communication Engineering Sri Ramarishna
More informationSTUDY ON AOTF-BASED NEAR-INFRARED SPECTROSCOPY ANALYSIS SYSTEM OF FARM PRODUCE QUALITY
STUDY ON AOTF-BASED NEAR-INFRARED SPECTROSCOPY ANALYSIS SYSTEM OF FARM PRODUCE QUALITY Xiaochao Zhang *, Xiaoan Hu, Yinqiao Zhang, Hui Wang, Hui Zhang 1 Institute of Mechatronics Technoogy and Appication,
More informationA Sample-Decimation Based Fast Preamble Detection Algorithm
A Sampe-Decimation Based Fast Preambe Detection Agorithm Haining Zhang A Thesis in The Department of Eectrica and Computer Engineering Presented in Partia Fufiment of the Requirements for the Degree of
More informationOptimum Fault Current Limiter Placement
Optimum aut urrent Limiter acement Jen-Hao Teng han-an Lu Abstract: Due to the difficuty in power network reinforcement and the interconnection of more distributed generations, faut current eve has become
More informationPRECODER AND EQUALIZER DESIGN FOR MULTI-USER MIMO FBMC/OQAM WITH HIGHLY FREQUENCY SELECTIVE CHANNELS. {leo.baltar,
PRECODER AD EQUALIZER DESIG FOR MULTI-USER MIMO FBMC/OQAM WITH HIGHLY FREQUECY SELECTIVE CHAELS Yao Cheng, Leonardo G. Batar, Martin Haardt, and Josef A. osse Communications Research Laboratory Imenau
More informationCAPACITY OF UNDERWATER WIRELESS COMMUNICATION CHANNEL WITH DIFFERENT ACOUSTIC PROPAGATION LOSS MODELS
CAPACITY OF UNDERWATER WIRELESS COMMUNICATION CHANNEL WITH DIFFERENT ACOUSTIC PROPAGATION LOSS MODELS Susan Joshy and A.V. Babu, Department of Eectronics & Communication Engineering, Nationa Institute
More informationCOMPARATIVE ANALYSIS OF ULTRA WIDEBAND (UWB) IEEE A CHANNEL MODELS FOR nlos PROPAGATION ENVIRONMENTS
COMPARATIVE ANALYSIS OF ULTRA WIDEBAND (UWB) IEEE80.15.3A CHANNEL MODELS FOR nlos PROPAGATION ENVIRONMENTS Ms. Jina H. She PG Student C.C.E.T, Wadhwan, Gujarat, Jina_hshet@yahoo.com Dr. K. H. Wandra Director
More informationDistributed Resource Allocation for Relay-Aided Device-to-Device Communication: A Message Passing Approach
Distributed Resource Aocation for Reay-Aided Device-to-Device Communication: A Message Passing Approach Monowar Hasan and Ekram Hossain arxiv:406.323v [cs.ni] 2 Jun 204 Abstract Device-to-device D2D communication
More informationComparative Study of Frequency Agile Data Transmission Schemes for Cognitive Radio Transceivers
Comparative Study of Frequency Agile Data Transmission Schemes for Cognitive Radio Transceivers Rakesh Rajbanshi Qi Chen Alexander M. Wyglinski Joseph B. Evans Gary J. Minden Information and Telecommunication
More informationDESIGN OF A DIPOLE ANTENNA USING COMPUTER SIMULATION
Undergraduate Research Opportunity Project (UROP ) DESIGN OF A DIPOLE ANTENNA USING COMPUTER SIMULATION Student: Nguyen, Tran Thanh Binh Schoo of Eectrica & Eectronic Engineering Nayang Technoogica University
More informationLow Delay Wind Noise Cancellation for Binaural Hearing Aids
INTER-NOISE 6 Low Deay Wind Noise Canceation for Binaura Hearing Aids Nobuhio HIRUMA ; Ryousue KOUYAMA ; Hidetoshi NAKASHIMA 3 ; Yoh-ichi FUJISAKA 4, 4 Rion Co., Ltd, Japan, 3 Nationa Institute of Technoogy,
More informationUltra Wideband Impulse Radio Systems with Multiple Pulse Types 1
1 Utra Wideband Impuse Radio Systems with Mutipe Puse Types 1 Sinan Gezici, Student Member, IEEE, Zafer Sahinogu 3, Member, IEEE, Hisashi Kobayashi, Life Feow, IEEE, and H. Vincent Poor, Feow, IEEE arxiv:cs/5168v1
More informationGroup Sparse Beamforming for Green Cloud-RAN
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 13, NO. 5, MAY 2014 2809 Group Sparse Beamforming for Green Coud-RAN Yuanming Shi, Student Member, IEEE, Jun Zhang, Member, IEEE, and Khaed B. Letaief,
More informationSCHEDULING the wireless links and controlling their
3738 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 13, NO. 7, JULY 2014 Minimum Length Scheduing With Packet Traffic Demands in Wireess Ad Hoc Networks Yacin Sadi, Member, IEEE, and Sinem Coeri Ergen,
More informationM.Tech Student, Asst Professor Department Of Eelectronics and Communications, SRKR Engineering College, Andhra Pradesh, India
Computational Performances of OFDM using Different Pruned FFT Algorithms Alekhya Chundru 1, P.Krishna Kanth Varma 2 M.Tech Student, Asst Professor Department Of Eelectronics and Communications, SRKR Engineering
More informationTHE pressing need to improve the efficiency of wireless
SUBMIED O IEEE RANSACIONS ON SIGNAL PROCESSING, MANUSCRIP, OCOBER 04 Bind Interference Aignment for Ceuar Networks Máximo Moraes-Céspedes, Student Member, IEEE, Jorge Pata-Chaves, Member, IEEE, Dimitris
More informationPower Control and Transmission Scheduling for Network Utility Maximization in Wireless Networks
roceedings of the 46th IEEE Conference on Decision and Contro New Oreans, LA, USA, Dec. 12-14, 27 FrB2.5 ower Contro and Transmission Scheduing for Network Utiity Maximization in Wireess Networks Min Cao,
More informationSpatial Reuse in Dense Wireless Areas: A Cross-layer Optimization Approach via ADMM
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 1 Spatia Reuse in Dense Wireess Areas: A Cross-ayer Optimization Approach via ADMM Haeh Tabrizi, Member, IEEE, Borja Peeato, Member, IEEE, Gonaz Farhadi, Member,
More informationTEMPORAL FAIRNESS ENHANCED SCHEDULING FOR COOPERATIVE RELAYING NETWORKS IN LOW MOBILITY FADING ENVIRONMENTS
TEMPORAL FAIRNESS ENHANCED SCHEDULING FOR COOPERATIVE RELAYING NETWORKS IN LOW MOBILITY FADING ENVIRONMENTS Ingmar Hammerström, Jian Zhao, and Armin Wittneben Swiss Federa Institute of Technoogy (ETH)
More informationEfficient Downlink Channel Reconstruction for FDD Multi-Antenna Systems
1 Efficient Downink Channe Reconstruction for FDD Muti-Antenna Systems Yu Han, Tien-Hao Hsu, Chao-Kai Wen, Kai-Kit Wong, and Shi Jin Nationa Mobie Communications Research Laboratory, Southeast University,
More informationEnhancing IEEE n WLANs using group-orthogonal code-division multiplex
Teecommun Syst (2008) 38: 37 44 DOI 101007/s11235-008-9089-x Enhancing IEEE 80211n WLANs using group-orthogona code-division mutipex Guiem Femenias Feip Riera-Paou Pubished onine: 18 March 2008 Springer
More informationDevelopment of a LabVIEW-based test facility for standalone PV systems
Deveopment of a LabVIEW-based test faciity for standaone PV systems Aex See Kok Bin, Shen Weixiang, Ong Kok Seng, Saravanan Ramanathan and Low I-Wern Monash University Maaysia, Schoo of Engineering No.2,
More informationChannel Estimation for SC-FDE Systems Using Frequency Domain Multiplexed Pilots
Channe Estimation for SC-FDE Systems Using Frequency Domain utipexed Piots Chan-Tong am, David D. Faconer and Forence Danio-emoine BCWS, Careton Univ., Canada K1S 5B6 Emai: {amc, ddf, fdanio@sce.careton.ca
More informationIterative Transceiver Design for Opportunistic Interference Alignment in MIMO Interfering Multiple-Access Channels
Journa of Communications Vo. 0 No. February 0 Iterative Transceiver Design for Opportunistic Interference Aignment in MIMO Interfering Mutipe-Access Channes Weipeng Jiang ai Niu and Zhiqiang e Schoo of
More informationWIRELESS LANS ABSTRACT INTRODUCTION
WIREESS AS CO-CHAE ITERFERECE CACEATIO BASED O MIMO SYSTEMS UCA GIAGASPERO AD UIGI AGAROSSI, PHIIPS RESEARCH MOZA GIOVAI PATEGHI, CEFRIE SHUTAI OKAMURA, OSAKA UIVERSITY MIORU OKADA, ISTITUTE OF SCIECE
More informationNetwork Control by Bayesian Broadcast
IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. IT-33, NO. 3, MAY 1987 323 Network Contro by Bayesian Broadcast RONALD L. RIVEST Abstract-A transmission contro strategy is described for sotted- ALOHA-type
More informationOptimal Bandwidth Allocation for Source Coding, Channel Coding and Spreading in a CDMA System
ptima Bandwidth Aocation or Source oding, hanne oding and Spreading in a DA System Qinghua Zhao, Pamea. osman, and aurence B. istein Department o Eectrica and omputer Engineering, University o aiornia,
More informationSparse Channel Estimation Based on Compressed Sensing for Massive MIMO Systems
Sparse Channe Estimation Based on Compressed Sensing for Massive MIMO Systems Chenhao Qi, Yongming Huang, Shi Jin and Lenan Wu Schoo of Information Science and Engineering, Southeast University, Nanjing
More informationPAPER An Iterative MIMO Receiver Employing Virtual Channels with a Turbo Decoder for OFDM Wireless Systems
878 IEICE TRANS. COMMUN., VOL.E98 B, NO.5 MAY 015 PAPER An Iterative MIMO Receiver Empoying Virtua Channes with a Turbo Decoder for OFDM Wireess Systems Akihito TAYA, Member, Satoshi DENNO a), Koji YAMAMOTO,
More informationTransmit-Diversity-Assisted Space-Shift Keying for Colocated and Distributed/Cooperative MIMO Elements
2864 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL 60, NO 6, JULY 2011 Transmit-Diversity-Assisted Space-Shift Keying for Coocated and Distributed/Cooperative MIMO Eements Du Yang, Chao Xu, Student Member,
More informationOptimal and Suboptimal Finger Selection Algorithms for MMSE Rake Receivers in Impulse Radio Ultra-Wideband Systems 1
Optima and Suboptima Finger Seection Agorithms for MMSE Rake Receivers in Impuse Radio Utra-Wideband Systems Sinan Gezici, Mung Chiang, H. Vincent Poor and Hisashi Kobayashi Department of Eectrica Engineering
More informationYongxiang Zhao Brookhaven National Laboratory Upton, NY, July 1998 CENTER FOR ACCELERATOR PHYSICS
BNL CAP CCII, 65685 225-MUON-98C A NEW STRUCTURE OF LINEAR COLLIDER * Yongxiang Zhao Brookhaven Nationa Laboratory Upton, NY, 11973 RECEIVED AIK 1 7 1998 OSTI *This work was supported by the US Department
More informationFast Factorized Backprojection Algorithm for UWB Bistatic SAR Image Reconstruction
Fast Factorized Bacprojection Agorithm for UWB Bistatic SA Image econstruction Viet Vu Thomas Sjögren and Mats Pettersson Beinge Institute of Technoogy Karsrona Sweden. Outine Motivation Contribution Deveopment
More informationA Modified FFT Algorithm for OFDM Based Wireless System
P International Journal of Scientific Engineering and Applied Science (IJSEAS) - Volume-1, Issue-4, July 2015 A Modified FFT Algorithm for OFDM Based Wireless System 1 2 G. Harish KumarP P, Mahesh kusumap
More informationAalborg Universitet On Radiated Performance Evaluation of Massive MIMO Devices in Multi-Probe Anechoic Chamber OTA Setups General rights
Aaborg Universitet On Radiated Performance Evauation of Massive MIMO Devices in Muti-Probe Anechoic Chamber OTA Setups Kyösti, Pekka; Hentiä, Lassi; Fan, Wei; Lehtomaki, Janne; Latva-aho, Matti Pubished
More informationGRAY CODE FOR GENERATING TREE OF PERMUTATION WITH THREE CYCLES
VO. 10, NO. 18, OCTOBER 2015 ISSN 1819-6608 GRAY CODE FOR GENERATING TREE OF PERMUTATION WITH THREE CYCES Henny Widowati 1, Suistyo Puspitodjati 2 and Djati Kerami 1 Department of System Information, Facuty
More informationAdaptive low-rank channel estimation for multiband OFDM ultra-wideband communications
RESEARCH Open Access Adaptive ow-rank channe estimation for mutiband OFDM utra-wideband communications Chia-Chang Hu * and Shih-Chang Lee Abstract In this paper, an adaptive channe estimation scheme based
More informationBit Error Rate Calculation for OFDM with Synchronization Errors in Time and Frequency Selective Fading Channels
Bit Error Rate Cacuation for OFDM with Synchronization Errors in Time and Frequency Seective Fading Channes Marco Krondorf and Gerhard Fettweis Vodafone Chair Mobie Communications Systems, Technische Universität
More informationOn the Relationship Between Capacity and Distance in an Underwater Acoustic Communication Channel
On the Reationship Between Capacity and Distance in an Underwater Acoustic Communication Channe Miica Stojanovic Massachusetts Institute of Technoogy miitsa@mit.edu ABSTRACT Path oss of an underwater acoustic
More informationCHANNEL MODELLING & PERFORMANCE ANALYSIS OF WIFI
CHANNEL MODELLING & PERFORMANCE ANALYSIS OF WIFI Jivisha, Gaurav Mohta, Saumya Das Siim Manipa Institute of Technoogy Emai Id- gauravmohta.officia@gmai.com; Ph No. +9 9609850304 Abstract Wi-Fi or wireess
More informationA Game-theoretic Approach to Power Management in MIMO-OFDM. Ad Hoc Networks. A Dissertation. Submitted to the Faculty. Drexel University.
A Game-theoretic Approach to Power Management in MIMO-OFDM Ad Hoc Networks A Dissertation Submitted to the Facuty of Drexe University by Chao Liang in partia fufiment of the requirements for the degree
More informationJoint Detection and CFO Compensation in Asynchronous Multi-User MIMO OFDM Systems
Joint Detection and CFO Compensation in Asynchronous Muti-User MIMO OFDM Systems Vincent Kotzsch, Jörg Hofed and Gerhard Fettweis Vodafone Chair Mobie Communications Systems, TU-Dresden, Germany Emai:
More information