A Result Analysis of OFDM-Based Cognitive Radio Networks for Efficient- Energy Resource Allocation
|
|
- Jared Randall
- 5 years ago
- Views:
Transcription
1 A Result Analysis of OFDM-Based Cognitive Radio Networks for Efficient- Energy Resource Allocation Santavana Singh 1, Sumit Dubey 2, 1 Mtech Scholar, JNCT Riwa, santavana2416@gmail.com, India; 2, Asst. Professor, JNCT Riwa, sumitdubey02@gmail.com, India; Abstract In this paper, we tend to investigate the energy-efficient resource allocation in orthogonal frequency division multiplexing (OFDM)-based cognitive radio (CR) networks, where we tend to try and maximize the system energy-efficiency under the thought of many practical limitations, such as transmission power budget of the Cr system, interference threshold of most important users and transmit demands of secondary users. Our general objective formulation leads to a challenging mixed integer programming problem that's hard to solve. To form it computationally tractable, we employ a time-sharing methodology to change it as a non-linear partial program problem, which may be further converted into an equivalent convex optimization problem by using its hypogragh kind. Supported these transformations, it is possible to obtain (near) best possible explanation by usual optimization method. However, the complexness of the standard technique is just excessively high for this real-time optimization project. By utilize the structure of the problem extensively; we develop an efficient barrier methodology to work out the (near) best solution with an affordable complexness, significantly higher than the standard technique. Numerical results show that our proposal can maximize the energy efficiency of the Cr system, whilst the proposed algorithmic rule performs quickly and stably. Keywords: orthogonal frequency-division multiplexing (OFDM), inter-carrier interference (ICI) I. Introduction Multiple receive antennas may be used with orthogonal frequency-division multiplexing (OFDM) to boost system performance, where space variety is achieve by means of subcarrier support space combining. However, in subcarrier-based space combining, it's needed that multiple discrete Fourier transform (DFT) process, each per receive antenna, be used. As a result, such systems are quite difficult, because the complexness of DFT could be a major concern for system implementation. Recently, some schemes are proposed to reduce the quantity of DFT blocks required. Within the principle of orthogonal designs, the number of DFT blocks is reduced to a half with three decibel performance degradation. Within the received timedomain OFDM symbols from every antenna are 1st weighted then combined before the DFT processing. By doing thus, the quantity of DFT blocks required is reduced to 1. In OFDM with multiple transmit and multiple receive antennas (MIMO) is investigated, and a reduced- complexity algorithmic rule is proposed to reduce the quantity of DFT blocks needed to 1. In OFDM (orthogonal frequency-division multiplexing), the subcarrier frequencies are preferred so the sub-carriers are Orthogonal to one another that means that cross-talk stuck between the sub-channels is eradicated along with inter-carrier guard bands aren't needed. These significantly simplify the design of both the transmitter and the receiver; dissimilar to standard FDM, a separate filter for each sub-channel isn't needed. The orthogonality have need of that the sub-carrier gap is Hertz, wherever TUseconds is the useful image duration (the receiver side window size), and k may be a positive integer, generally capable one. Therefore, with N sub-carriers, the entire pass band bandwidth are going to be B N Δf (Hz). The orthogonality also allows high spectral efficiency, with a total symbol rate close to the Nyquist rate for the equivalent baseband signal (i.e. close to half the Nyquist rate used for the double-side band substantial pass band sign). Almost the full obtainable waveband may be utilized. OFDM in general have an almost 'white' band, giving it compassionate electromagnetic interference properties with respect to different co-channel users. A simple example: A useful symbol length TU = one ms would need a sub-carrier spacing of (or a number multiple of that) meant for orthogonality. N = 1,000 subcarriers would lead to a complete pass band bandwidth of NΔf = 1 MHz. For this symbol time, the specified [1010]
2 bandwidth in theory in step with Nyquist is N/2TU = 0.5 MHz (i.e., 1/2 the achieved bandwidth required by our scheme). If a guard interval is applied (see below), Nyquist bandwidth demand would be even lower. The FFT would lead to N = 1,000 samples per image. If no guard interval was applied, this is able to result in a base band complicated valued signal with a sample rate of one MHz, which might need a baseband bandwidth of 0.5 MHz in keeping with Nyquist. However, the pass band RF signal is created by multiplying the baseband signal with a carrier wave form (i.e., double -sideband quadrature amplitude-modulation) leading to a pass band bandwidth of one MHz A single-side band (SSB) or vestigial sideband (VSB) modulation scheme would accomplish almost half that bandwidth for a similar symbol rate (i.e., twice as high spectral potency for an equivalent image alphabet length). It s but additional sensitive to multipath interference. OFDM needs very correct frequency synchronization between the receiver and therefore the transmitter; with frequency deviation the sub-carriers can now not be orthogonal, inflicting inter-carrier interference (ICI) (i.e., cross -talk between the sub-carriers). Frequency offsets are usually caused by mismatched transmitter and receiver oscillators, or by propagation as a result of movement. Whereas propagation alone could also be compensated for by the receiver, the case is worsened when combined with multipath, as reflections can appear at various frequency offsets, which is much tougher to correct. This effect usually worsens as speed will increase, and is a very important factor limiting the employment of OFDM in high-speed vehicles. Many techniques for ICI suppression are steered; however they will increase the receiver complexity. II. Method A cognitive radio is an intelligent radio that can be programmed and configured dynamically. Its transceiver is designed to use the best wireless channels in its vicinity. Such a radio automatically detects available channels in wireless spectrum, then accordingly changes its transmission or reception parameters to allow more concurrent wireless communications in a given spectrum band at one location. This process is a form of dynamic spectrum management. The methodology has been implemented in this research work is utilizing the basic concept of the CR using the OFDM. Orthogonal frequency-division multiplexing (OFDM), mostly identical to coded OFDM (COFDM) and discrete multitone modulation (DMT), could be a frequency-division multiplexing (FDM) scheme utilized as a digital multi - carrier modulation method. A huge number of closelyspaced orthogonal sub-carrier is used to carry data. The data is divided into several parallel data streams or else channels, one for every sub-carrier. Each sub-carrier is modulated with a conventional modulation scheme (such as quadrature amplitude modulation or phase-shift keying) at a low symbol rate, maintaining total data rates related to conventional single-carrier modulation schemes in the similar bandwidth. Fig 1 Cognitive Radio Network OFDM has developed into a well-liked scheme for wideband digital, whether or not wireless or over copper wires, used in applications similar to audio broadcasting and digital television, wireless networking and broadband web access. The primary advantage of OFDM over single-carrier schemes is its ability to take care of severe channel conditions (for example, attenuation of high frequencies in an exceedingly long copper wire, narrowband interference and frequency-selective attenuation due to multipath) while not advanced equalisation filters. Channel equalisation is simplified as a result of OFDM could also be viewed as using several slowly-modulated narrowband signals instead of one rapidly-modulated wideband signal. The low symbol rate makes the utilization of a guard interval between symbols affordable, creating it potential to handle time-spreading and eliminate entomb image interference (ISI). This mechanism additionally facilitates the look of single frequency networks (SFNs), wherever many adjacent transmitters send identical signal at the same time at identical frequency, because the signals from several distant transmitters could also be combined constructively, instead of meddlesome as would usually occur in an exceedingly ancient single-carrier system. In this thesis we tend to are method signal for communication and save the energy, 1st take information and convert bit to symbol or serial to parallel and them modulate information with the assistance of QAM modulation. once modulation apply USB rule and calculate the ser and ber and optimize information and take away ber and snr value with the assistance of low pass filter and so plot effect as show on figure. Figure 2: Block Diagram of Proposed Methodology [1011]
3 III. Result Cognitive radio may be a form of wireless communication during that a transceiver will showing intelligence detect which communication channels are in use and which aren't, and instantly get into vacant channels whereas avoiding occupied ones. CR will sense its surroundings and, while not the intervention of the user, will adapt to the user's communications desires whereas orthodox to Federal Communications Commission rules within the US. A atomic number 24 will showing intelligence detect whether or not any portion of the spectrum is in use, and might temporarily use it while not meddling with the transmissions of different users. In step with Bruce Fette, "Some of the radio's different cognitive abilities embrace determinant its location, sensing spectrum use by neighboring devices, dynamical frequency, adjusting output power or perhaps sterilization transmission parameters and characteristics. Figure 5: EE of CRsystem as a function of mrr Figure 6:Channel Realization Figure 3: EE of CR system as a function of the transmission Figure 7: Optimal RA based on time sharing Figure 4: EE of cr system as a function of interference system [1012]
4 Figure 8: Optimal RA based on time sharing Figure 10: CR Figure 9: Optimal RA based on time sharing IV. Conclusion We studied the energy-efficient resource allocation in an OFDM-based CR network, which is an urgent task for green communication design. Our model is general and covers many practical constraints, leading to an intractable mixed integer programming problem. We perform a series of equivalent transformations by analysing the formulated problem intensively, converting it into a convex optimization problem which can be solved by standard optimization technique. Furthermore, we develop an efficient algorithm to work out the (near) optimal solution by exploiting its special structure to update Newton step in an ingenious way, reducing the computation complexity dramatically and making its applications possible. Numerical results show that our resource allocation proposal can achieve near optimal energy efficiency, while the algorithm developed in this thesis converges quickly and stably. References [1] Shaowei Wang, MengyaoGe, and Wentao Zhao, Energy- Efficient Resource Allocation for OFDM-Based Cognitive Radio Networks IEEE transactions on communications, vol. 61, no. 8, Aug [2] FCC, Facilitating opportunities for flexible, efficient, and reliable spectrum use employing cognitive radio technologies, FCC Report, ET Docket , Dec [3] S. Haykin, Cognitive radio: brain-empowered wireless communications, IEEE J. Sel. Areas Commun., vol. 23, no. 2, pp , Feb [4] FCC, Spectrum policy task force report, FCC Report, ET Docket , Nov [1013]
5 [5] T. A. Weiss and F. K. Jondral, Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency, IEEE Commun. Mag., vol. 42, no. 3, pp. 8 14, Mar [6] S. Sadr, A. Anpalagan, and K. Raahemifar, Radio resource allocation algorithms for the downlink of multiuser OFDM communication systems, IEEE Commun. Surv. & Tutor., vol. 11, no. 3, pp , Sep [7] R. Zhang, Y.-C. Liang, and S. Cui, Dynamic resource allocation in cognitive radio networks, IEEE Signal Process. Mag., vol. 27, no. 3, pp , May [8] G. Bansal, M. J. Hossain, and V. K. Bhargava, Optimal and suboptimal power allocation schemes for OFDM-based cognitive radio systems, IEEE Trans. Wireless Commun., vol. 7, no. 11, pp , Nov [9] X. Kang, Y.-C. Liang, A. Nallanathan, H. Garg, and R. Zhang, Optimal power allocation for fading channels in cognitive radio networks: ergodic capacity and outage capacity, IEEE Trans. Wireless Commun., vol. 8,no. 2, pp , Feb [10] Y. Zhang and C. Leung, Resource allocation in an OFDM-based cognitive radio system, IEEE Trans. Commun., vol. 57, no. 7, pp , July [11] S. Wang, Efficient resource allocation algorithm for cognitive OFDM systems, IEEE Commun. Lett., vol. 14, no. 8, pp , Aug [12] S. Wang, F. Huang, and Z.-H. Zhou, Fast power allocation algorithm for cognitive radio networks, IEEE Commun. Lett., vol. 15, no. 8, pp , Aug [1014]
Implementation of Energy-Efficient Resource Allocation for OFDM-Based Cognitive Radio Networks
Implementation of Energy-Efficient Resource Allocation for OFDM-Based Cognitive Radio Networks Anna Kumar.G 1, Kishore Kumar.M 2, Anjani Suputri Devi.D 3 1 M.Tech student, ECE, Sri Vasavi engineering college,
More informationDesign and Implementation of OFDM System and Reduction of Inter-Carrier Interference at Different Variance
Design and Implementation of OFDM System and Reduction of Inter-Carrier Interference at Different Variance Gaurav Verma 1, Navneet Singh 2 1 Research Scholar, JCDMCOE, Sirsa, Haryana, India 2 Assistance
More informationPerformance Analysis of OFDM for Different Digital Modulation Schemes using Matlab Simulation
J. Bangladesh Electron. 10 (7-2); 7-11, 2010 Performance Analysis of OFDM for Different Digital Modulation Schemes using Matlab Simulation Md. Shariful Islam *1, Md. Asek Raihan Mahmud 1, Md. Alamgir Hossain
More informationInternational Journal of Informative & Futuristic Research ISSN:
Reviewed Paper Volume 3 Issue 7 March 2016 International Journal of Informative & Futuristic Research Study Of Bit Error Rate Performance And CFO Estimation In OFDM Using QPSK Modulation Technique Paper
More informationImplementation and Comparative analysis of Orthogonal Frequency Division Multiplexing (OFDM) Signaling Rashmi Choudhary
Implementation and Comparative analysis of Orthogonal Frequency Division Multiplexing (OFDM) Signaling Rashmi Choudhary M.Tech Scholar, ECE Department,SKIT, Jaipur, Abstract Orthogonal Frequency Division
More informationPerformance Evaluation of STBC-OFDM System for Wireless Communication
Performance Evaluation of STBC-OFDM System for Wireless Communication Apeksha Deshmukh, Prof. Dr. M. D. Kokate Department of E&TC, K.K.W.I.E.R. College, Nasik, apeksha19may@gmail.com Abstract In this paper
More informationA New Data Conjugate ICI Self Cancellation for OFDM System
A New Data Conjugate ICI Self Cancellation for OFDM System Abhijeet Bishnu Anjana Jain Anurag Shrivastava Department of Electronics and Telecommunication SGSITS Indore-452003 India abhijeet.bishnu87@gmail.com
More informationInternational Journal of Advance Engineering and Research Development. Sidelobe Suppression in Ofdm based Cognitive Radio- Review
Scientific Journal of Impact Factor (SJIF): 4.14 International Journal of Advance Engineering and Research Development Volume 3, Issue 3, March -2016 e-issn (O): 2348-4470 p-issn (P): 2348-6406 Sidelobe
More informationOrthogonal Frequency Division Multiplexing & Measurement of its Performance
Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology IJCSMC, Vol. 5, Issue. 2, February 2016,
More informationOrthogonal frequency division multiplexing (OFDM)
Orthogonal frequency division multiplexing (OFDM) OFDM was introduced in 1950 but was only completed in 1960 s Originally grew from Multi-Carrier Modulation used in High Frequency military radio. Patent
More informationKey words: OFDM, FDM, BPSK, QPSK.
Volume 4, Issue 3, March 2014 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: www.ijarcsse.com Analyse the Performance
More informationPerformance analysis of OFDM with QPSK using AWGN and Rayleigh Fading Channel
Performance analysis of OFDM with QPSK using AWGN and Rayleigh Fading Channel 1 V.R.Prakash* (A.P) Department of ECE Hindustan university Chennai 2 P.Kumaraguru**(A.P) Department of ECE Hindustan university
More informationComparison of ML and SC for ICI reduction in OFDM system
Comparison of and for ICI reduction in OFDM system Mohammed hussein khaleel 1, neelesh agrawal 2 1 M.tech Student ECE department, Sam Higginbottom Institute of Agriculture, Technology and Science, Al-Mamon
More informationSIDELOBE SUPPRESSION AND PAPR REDUCTION FOR COGNITIVE RADIO MIMO-OFDM SYSTEMS USING CONVEX OPTIMIZATION TECHNIQUE
SIDELOBE SUPPRESSION AND PAPR REDUCTION FOR COGNITIVE RADIO MIMO-OFDM SYSTEMS USING CONVEX OPTIMIZATION TECHNIQUE Suban.A 1, Jeswill Prathima.I 2, Suganyasree G.C. 3, Author 1 : Assistant Professor, ECE
More informationSPARSE CHANNEL ESTIMATION BY PILOT ALLOCATION IN MIMO-OFDM SYSTEMS
SPARSE CHANNEL ESTIMATION BY PILOT ALLOCATION IN MIMO-OFDM SYSTEMS Puneetha R 1, Dr.S.Akhila 2 1 M. Tech in Digital Communication B M S College Of Engineering Karnataka, India 2 Professor Department of
More informationLecture 13. Introduction to OFDM
Lecture 13 Introduction to OFDM Ref: About-OFDM.pdf Orthogonal frequency division multiplexing (OFDM) is well-known to be effective against multipath distortion. It is a multicarrier communication scheme,
More informationCHAPTER 3 ADAPTIVE MODULATION TECHNIQUE WITH CFO CORRECTION FOR OFDM SYSTEMS
44 CHAPTER 3 ADAPTIVE MODULATION TECHNIQUE WITH CFO CORRECTION FOR OFDM SYSTEMS 3.1 INTRODUCTION A unique feature of the OFDM communication scheme is that, due to the IFFT at the transmitter and the FFT
More informationAn OFDM Transmitter and Receiver using NI USRP with LabVIEW
An OFDM Transmitter and Receiver using NI USRP with LabVIEW Saba Firdose, Shilpa B, Sushma S Department of Electronics & Communication Engineering GSSS Institute of Engineering & Technology For Women Abstract-
More informationDecision Feedback Equalization for Filter Bank Multicarrier Systems
Decision Feedback Equalization for Filter Bank Multicarrier Systems Abhishek B G, Dr. K Sreelakshmi, Desanna M M.Tech Student, Department of Telecommunication, R. V. College of Engineering, Bengaluru,
More informationComparative Study of OFDM & MC-CDMA in WiMAX System
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 1, Ver. IV (Jan. 2014), PP 64-68 Comparative Study of OFDM & MC-CDMA in WiMAX
More informationA Research Concept on Bit Rate Detection using Carrier offset through Analysis of MC-CDMA SYSTEM
Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology ISSN 2320 088X IMPACT FACTOR: 5.258 IJCSMC,
More informationSimulative Investigations for Robust Frequency Estimation Technique in OFDM System
, pp. 187-192 http://dx.doi.org/10.14257/ijfgcn.2015.8.4.18 Simulative Investigations for Robust Frequency Estimation Technique in OFDM System Kussum Bhagat 1 and Jyoteesh Malhotra 2 1 ECE Department,
More informationDecrease Interference Using Adaptive Modulation and Coding
International Journal of Computer Networks and Communications Security VOL. 3, NO. 9, SEPTEMBER 2015, 378 383 Available online at: www.ijcncs.org E-ISSN 2308-9830 (Online) / ISSN 2410-0595 (Print) Decrease
More information2.
PERFORMANCE ANALYSIS OF STBC-MIMO OFDM SYSTEM WITH DWT & FFT Shubhangi R Chaudhary 1,Kiran Rohidas Jadhav 2. Department of Electronics and Telecommunication Cummins college of Engineering for Women Pune,
More informationPerformance of OFDM-Based Cognitive Radio
International Journal of Engineering Science Invention ISSN (Online): 2319 6734, ISSN (Print): 2319 6726 Volume 2 Issue 4 ǁ April. 2013 ǁ PP.51-57 Performance of OFDM-Based Cognitive Radio Geethu.T.George
More informationUnderwater communication implementation with OFDM
Indian Journal of Geo-Marine Sciences Vol. 44(2), February 2015, pp. 259-266 Underwater communication implementation with OFDM K. Chithra*, N. Sireesha, C. Thangavel, V. Gowthaman, S. Sathya Narayanan,
More informationAlgorithm to Improve the Performance of OFDM based WLAN Systems
International Journal of Computer Science & Communication Vol. 1, No. 2, July-December 2010, pp. 27-31 Algorithm to Improve the Performance of OFDM based WLAN Systems D. Sreenivasa Rao 1, M. Kanti Kiran
More informationPerformance Evaluation of Nonlinear Equalizer based on Multilayer Perceptron for OFDM Power- Line Communication
International Journal of Electrical Engineering. ISSN 974-2158 Volume 4, Number 8 (211), pp. 929-938 International Research Publication House http://www.irphouse.com Performance Evaluation of Nonlinear
More informationA Kalman Filter Approach to Reduce ICI in OFDM Systems
A Kalman Filter Approach to Reduce ICI in OFDM Systems Pardeep 1, Sajjan Singh 2, S. V. A. V. Prasad 3 1 M.Tech Scholar, Department of ECE, BRCM CET, Bahal, Bhiwani, India e-mail: ps58519@gmail.com 2 Assistant
More informationBER Analysis for MC-CDMA
BER Analysis for MC-CDMA Nisha Yadav 1, Vikash Yadav 2 1,2 Institute of Technology and Sciences (Bhiwani), Haryana, India Abstract: As demand for higher data rates is continuously rising, there is always
More informationPerformance Evaluation of Wireless Communication System Employing DWT-OFDM using Simulink Model
Performance Evaluation of Wireless Communication System Employing DWT-OFDM using Simulink Model M. Prem Anand 1 Rudrashish Roy 2 1 Assistant Professor 2 M.E Student 1,2 Department of Electronics & Communication
More informationCognitive Radio Transmission Based on Chip-level Space Time Block Coded MC-DS-CDMA over Fast-Fading Channel
Journal of Scientific & Industrial Research Vol. 73, July 2014, pp. 443-447 Cognitive Radio Transmission Based on Chip-level Space Time Block Coded MC-DS-CDMA over Fast-Fading Channel S. Mohandass * and
More informationLecture 3: Wireless Physical Layer: Modulation Techniques. Mythili Vutukuru CS 653 Spring 2014 Jan 13, Monday
Lecture 3: Wireless Physical Layer: Modulation Techniques Mythili Vutukuru CS 653 Spring 2014 Jan 13, Monday Modulation We saw a simple example of amplitude modulation in the last lecture Modulation how
More informationA Comparative performance analysis of CFO Estimation in OFDM Systems for Urban, Rural and Rayleigh area using CP and Moose Technique
International Journal of Current Engineering and Technology E-ISSN 2277 4106, P-ISSN 2347 5161 2015 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article A Comparative
More informationIJESRT. Scientific Journal Impact Factor: (ISRA), Impact Factor: 2.114
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY PERFORMANCE IMPROVEMENT OF CONVOLUTION CODED OFDM SYSTEM WITH TRANSMITTER DIVERSITY SCHEME Amol Kumbhare *, DR Rajesh Bodade *
More informationSC - Single carrier systems One carrier carries data stream
Digital modulation SC - Single carrier systems One carrier carries data stream MC - Multi-carrier systems Many carriers are used for data transmission. Data stream is divided into sub-streams and each
More informationChannel Estimation in Multipath fading Environment using Combined Equalizer and Diversity Techniques
International Journal of Scientific & Engineering Research Volume3, Issue 1, January 2012 1 Channel Estimation in Multipath fading Environment using Combined Equalizer and Diversity Techniques Deepmala
More informationMITIGATING CARRIER FREQUENCY OFFSET USING NULL SUBCARRIERS
International Journal on Intelligent Electronic System, Vol. 8 No.. July 0 6 MITIGATING CARRIER FREQUENCY OFFSET USING NULL SUBCARRIERS Abstract Nisharani S N, Rajadurai C &, Department of ECE, Fatima
More informationOutline / Wireless Networks and Applications Lecture 7: Physical Layer OFDM. Frequency-Selective Radio Channel. How Do We Increase Rates?
Page 1 Outline 18-452/18-750 Wireless Networks and Applications Lecture 7: Physical Layer OFDM Peter Steenkiste Carnegie Mellon University RF introduction Modulation and multiplexing Channel capacity Antennas
More informationSpace Time Block Coding - Spatial Modulation for Multiple-Input Multiple-Output OFDM with Index Modulation System
Space Time Block Coding - Spatial Modulation for Multiple-Input Multiple-Output OFDM with Index Modulation System Ravi Kumar 1, Lakshmareddy.G 2 1 Pursuing M.Tech (CS), Dept. of ECE, Newton s Institute
More informationCarrier Frequency Offset Estimation Algorithm in the Presence of I/Q Imbalance in OFDM Systems
Carrier Frequency Offset Estimation Algorithm in the Presence of I/Q Imbalance in OFDM Systems K. Jagan Mohan, K. Suresh & J. Durga Rao Dept. of E.C.E, Chaitanya Engineering College, Vishakapatnam, India
More informationWireless Medium Access Control and CDMA-based Communication Lesson 16 Orthogonal Frequency Division Medium Access (OFDM)
Wireless Medium Access Control and CDMA-based Communication Lesson 16 Orthogonal Frequency Division Medium Access (OFDM) 1 4G File transfer at 10 Mbps High resolution 1024 1920 pixel hi-vision picture
More informationS.D.M COLLEGE OF ENGINEERING AND TECHNOLOGY
VISHVESHWARAIAH TECHNOLOGICAL UNIVERSITY S.D.M COLLEGE OF ENGINEERING AND TECHNOLOGY A seminar report on Orthogonal Frequency Division Multiplexing (OFDM) Submitted by Sandeep Katakol 2SD06CS085 8th semester
More informationInternational Research Journal of Engineering and Technology (IRJET) e-issn: Volume: 03 Issue: 12 Dec p-issn:
Performance comparison analysis between Multi-FFT detection techniques in OFDM signal using 16-QAM Modulation for compensation of large Doppler shift 1 Surya Bazal 2 Pankaj Sahu 3 Shailesh Khaparkar 1
More informationPerformance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels
Performance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels Abstract A Orthogonal Frequency Division Multiplexing (OFDM) scheme offers high spectral efficiency and better resistance to
More informationImproving Data Transmission Efficiency over Power Line Communication (PLC) System Using OFDM
Improving Data Transmission Efficiency over Power Line Communication (PLC) System Using OFDM Charles U. Ndujiuba 1, Samuel N. John 1, Oladimeji Ogunseye 2 1 Electrical & Information Engineering, Covenant
More informationOFDMA and MIMO Notes
OFDMA and MIMO Notes EE 442 Spring Semester Lecture 14 Orthogonal Frequency Division Multiplexing (OFDM) is a digital multi-carrier modulation technique extending the concept of single subcarrier modulation
More informationAn Equalization Technique for Orthogonal Frequency-Division Multiplexing Systems in Time-Variant Multipath Channels
IEEE TRANSACTIONS ON COMMUNICATIONS, VOL 47, NO 1, JANUARY 1999 27 An Equalization Technique for Orthogonal Frequency-Division Multiplexing Systems in Time-Variant Multipath Channels Won Gi Jeon, Student
More informationFigure 1: Basic OFDM Model. 2013, IJARCSSE All Rights Reserved Page 1035
Volume 3, Issue 6, June 2013 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: www.ijarcsse.com New ICI Self-Cancellation
More informationEfficient utilization of Spectral Mask in OFDM based Cognitive Radio Networks
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 6, Ver. III (Nov - Dec. 2014), PP 94-99 Efficient utilization of Spectral Mask
More informationAnju 1, Amit Ahlawat 2
Orthogonal Frequency Division Multiplexing Anju 1, Amit Ahlawat 2 1 Hindu College of Engineering, Sonepat 2 Shri Baba Mastnath Engineering College Rohtak Abstract: OFDM was introduced in the 1950s but
More informationMultiple-Input Multiple-Output OFDM with Index Modulation Using Frequency Offset
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 12, Issue 3, Ver. I (May.-Jun. 2017), PP 56-61 www.iosrjournals.org Multiple-Input Multiple-Output
More informationOFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK
OFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK Akshita Abrol Department of Electronics & Communication, GCET, Jammu, J&K, India ABSTRACT With the rapid growth of digital wireless communication
More informationAnalysis of Interference & BER with Simulation Concept for MC-CDMA
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 4, Ver. IV (Jul - Aug. 2014), PP 46-51 Analysis of Interference & BER with Simulation
More informationAustralian Journal of Basic and Applied Sciences. Optimal PRCC Coded OFDM Transceiver Design for Fading Channels
Australian Journal of Basic and Applied Sciences, 8(17) November 214, Pages: 155-159 AENSI Journals Australian Journal of Basic and Applied Sciences ISSN:1991-8178 Journal home page: www.ajbasweb.com Optimal
More informationSHIV SHAKTI International Journal of in Multidisciplinary and Academic Research (SSIJMAR) Vol. 3, No. 4, August-September (ISSN )
SHIV SHAKTI International Journal of in Multidisciplinary and Academic Research (SSIJMAR) Vol. 3, No. 4, August-September (ISSN 2278 5973) Orthogonal Frequency Division Multiplexing: Issues and Applications
More informationSingle Carrier Ofdm Immune to Intercarrier Interference
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 10, Issue 3 (March 2014), PP.42-47 Single Carrier Ofdm Immune to Intercarrier Interference
More informationANALYSIS OF BER AND SEP OF QPSK SIGNAL FOR MULTIPLE ANENNAS
ANALYSIS OF BER AND SEP OF QPSK SIGNAL FOR MULTIPLE ANENNAS Suganya.S 1 1 PG scholar, Department of ECE A.V.C College of Engineering Mannampandhal, India Karthikeyan.T 2 2 Assistant Professor, Department
More informationStudy of Performance Evaluation of Quasi Orthogonal Space Time Block Code MIMO-OFDM System in Rician Channel for Different Modulation Schemes
Volume 4, Issue 6, June (016) Study of Performance Evaluation of Quasi Orthogonal Space Time Block Code MIMO-OFDM System in Rician Channel for Different Modulation Schemes Pranil S Mengane D. Y. Patil
More informationMULTICARRIER communication systems are promising
1658 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 52, NO. 10, OCTOBER 2004 Transmit Power Allocation for BER Performance Improvement in Multicarrier Systems Chang Soon Park, Student Member, IEEE, and Kwang
More informationOrthogonal Frequency Division Multiplexing (OFDM)
Orthogonal Frequency Division Multiplexing (OFDM) Presenter: Engr. Dr. Noor M. Khan Professor Department of Electrical Engineering, Muhammad Ali Jinnah University, Islamabad Campus, Islamabad, PAKISTAN
More informationCOMPARISON OF CHANNEL ESTIMATION AND EQUALIZATION TECHNIQUES FOR OFDM SYSTEMS
COMPARISON OF CHANNEL ESTIMATION AND EQUALIZATION TECHNIQUES FOR OFDM SYSTEMS Sanjana T and Suma M N Department of Electronics and communication, BMS College of Engineering, Bangalore, India ABSTRACT In
More informationError Probability of Different Modulation Schemes for OFDM based WLAN standard IEEE a
Error Probability of Different Modulation Schemes for OFDM based WLAN standard IEEE 802.11a Sanjeev Kumar Asst. Professor/ Electronics & Comm. Engg./ Amritsar college of Engg. & Technology, Amritsar, 143001,
More informationSIMULATION OF COOPERATIVE SPECTRUM SENSING TECHNIQUES IN COGNITIVE RADIO USING MATLAB
SIMULATION OF COOPERATIVE SPECTRUM SENSING TECHNIQUES IN COGNITIVE RADIO USING MATLAB 1 ARPIT GARG, 2 KAJAL SINGHAL, 3 MR. ARVIND KUMAR, 4 S.K. DUBEY 1,2 UG Student of Department of ECE, AIMT, GREATER
More informationPerformance analysis of MISO-OFDM & MIMO-OFDM Systems
Performance analysis of MISO-OFDM & MIMO-OFDM Systems Kavitha K V N #1, Abhishek Jaiswal *2, Sibaram Khara #3 1-2 School of Electronics Engineering, VIT University Vellore, Tamil Nadu, India 3 Galgotias
More informationANALYSIS AND STUDY OF MULTI-SYMBOL ENCAPSULATED ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING
ANALYSIS AND STUDY OF MULTI-SYMBOL ENCAPSULATED ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Bachelor of Technology In Electronics
More informationORTHOGONAL frequency division multiplexing
IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 47, NO. 3, MARCH 1999 365 Analysis of New and Existing Methods of Reducing Intercarrier Interference Due to Carrier Frequency Offset in OFDM Jean Armstrong Abstract
More informationOFDM (Orthogonal Frequency Division Multiplexing) SIMULATION USING MATLAB Neha Pathak MTech Scholar, Shri am Institute of Technology
OFDM (Orthogonal Frequency Division Multiplexing) SIMULATION USING MATLAB Neha Pathak MTech Scholar, Shri am Institute of Technology ABSTRACT This paper discusses the design and implementation of an OFDM
More informationINTERFERENCE SELF CANCELLATION IN SC-FDMA SYSTEMS -A CAMPARATIVE STUDY
INTERFERENCE SELF CANCELLATION IN SC-FDMA SYSTEMS -A CAMPARATIVE STUDY Ms Risona.v 1, Dr. Malini Suvarna 2 1 M.Tech Student, Department of Electronics and Communication Engineering, Mangalore Institute
More informationDIGITAL Radio Mondiale (DRM) is a new
Synchronization Strategy for a PC-based DRM Receiver Volker Fischer and Alexander Kurpiers Institute for Communication Technology Darmstadt University of Technology Germany v.fischer, a.kurpiers @nt.tu-darmstadt.de
More informationPerformance Improvement of OFDM System using Raised Cosine Windowing with Variable FFT Sizes
International Journal of Research (IJR) Vol-1, Issue-6, July 14 ISSN 2348-6848 Performance Improvement of OFDM System using Raised Cosine Windowing with Variable FFT Sizes Prateek Nigam 1, Monika Sahu
More informationComparative Study on DWT-OFDM and FFT- OFDM Simulation Using Matlab Simulink
Comparative Study on DWT-OFDM and FFT- OFDM Simulation Using Matlab Simulink Manjunatha K #1, Mrs. Reshma M *2 #1 M.Tech Student, Dept of DECS, Visvedvaraya Institute of Advanced Technology (VIAT), Muddenahalli
More information(OFDM). I. INTRODUCTION
Survey on Intercarrier Interference Self- Cancellation techniques in OFDM Systems Neha 1, Dr. Charanjit Singh 2 Electronics & Communication Engineering University College of Engineering Punjabi University,
More informationOFDM Systems For Different Modulation Technique
Computing For Nation Development, February 08 09, 2008 Bharati Vidyapeeth s Institute of Computer Applications and Management, New Delhi OFDM Systems For Different Modulation Technique Mrs. Pranita N.
More informationOptimization of OFDM Systems Using Genetic Algorithm in FPGA
Optimization of OFDM Systems Using Genetic Algorithm in FPGA 1 S.Venkatachalam, 2 T.Manigandan 1 Kongu Engineering College, Perundurai-638052, Tamil Nadu, India 2 P.A. College of Engineering and Technology,
More informationOrthogonal Cyclic Prefix for Time Synchronization in MIMO-OFDM
Orthogonal Cyclic Prefix for Time Synchronization in MIMO-OFDM Gajanan R. Gaurshetti & Sanjay V. Khobragade Dr. Babasaheb Ambedkar Technological University, Lonere E-mail : gaurshetty@gmail.com, svk2305@gmail.com
More informationOrthogonal Frequency Division Multiplexing (OFDM) based Uplink Multiple Access Method over AWGN and Fading Channels
Orthogonal Frequency Division Multiplexing (OFDM) based Uplink Multiple Access Method over AWGN and Fading Channels Prashanth G S 1 1Department of ECE, JNNCE, Shivamogga ---------------------------------------------------------------------***----------------------------------------------------------------------
More informationENHANCING BER PERFORMANCE FOR OFDM
RESEARCH ARTICLE OPEN ACCESS ENHANCING BER PERFORMANCE FOR OFDM Amol G. Bakane, Prof. Shraddha Mohod Electronics Engineering (Communication), TGPCET Nagpur Electronics & Telecommunication Engineering,TGPCET
More informationLocal Oscillators Phase Noise Cancellation Methods
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834, p- ISSN: 2278-8735. Volume 5, Issue 1 (Jan. - Feb. 2013), PP 19-24 Local Oscillators Phase Noise Cancellation Methods
More informationImplementation of MIMO-OFDM System Based on MATLAB
Implementation of MIMO-OFDM System Based on MATLAB Sushmitha Prabhu 1, Gagandeep Shetty 2, Suraj Chauhan 3, Renuka Kajur 4 1,2,3,4 Department of Electronics and Communication Engineering, PESIT-BSC, Bangalore,
More informationFuzzy logic based Adaptive Modulation Using Non Data Aided SNR Estimation for OFDM system
Fuzzy logic based Adaptive Modulation Using Non Data Aided SNR Estimation for OFDM system K.SESHADRI SASTRY* Research scholar, Department of computer science & systems Engineering, Andhra University, Visakhapatnam.
More informationPerformance Analysis of Concatenated RS-CC Codes for WiMax System using QPSK
Performance Analysis of Concatenated RS-CC Codes for WiMax System using QPSK Department of Electronics Technology, GND University Amritsar, Punjab, India Abstract-In this paper we present a practical RS-CC
More informationNoise Plus Interference Power Estimation in Adaptive OFDM Systems
Noise Plus Interference Power Estimation in Adaptive OFDM Systems Tevfik Yücek and Hüseyin Arslan Department of Electrical Engineering, University of South Florida 4202 E. Fowler Avenue, ENB-118, Tampa,
More informationClipping and Filtering Technique for reducing PAPR In OFDM
IOSR Journal of Engineering (IOSRJEN) e-issn: 2250-3021, p-issn: 2278-8719, Volume 2, Issue 9 (September 2012), PP 91-97 Clipping and Filtering Technique for reducing PAPR In OFDM Saleh Albdran 1, Ahmed
More informationCHAPTER 1 INTRODUCTION
CHAPTER 1 INTRODUCTION High data-rate is desirable in many recent wireless multimedia applications [1]. Traditional single carrier modulation techniques can achieve only limited data rates due to the restrictions
More informationOFDM system: Discrete model Spectral efficiency Characteristics. OFDM based multiple access schemes. OFDM sensitivity to synchronization errors
Introduction - Motivation OFDM system: Discrete model Spectral efficiency Characteristics OFDM based multiple access schemes OFDM sensitivity to synchronization errors 4 OFDM system Main idea: to divide
More informationSurvey on Effective OFDM Technology for 4G
Survey on Effective OFDM Technology for 4G Kanchan Vijay Patil, 2 R D Patane, Lecturer, 2 Professor, Electronics and Telecommunication, ARMIET, Shahpur, India 2 Terna college of engineering, Nerul, India
More informationPeriodic Impulsive Noise Suppression in OFDM- Based Power-Line Communications through Filtering Under Different Coding Schemes
http:// Periodic Impulsive Noise Suppression in OFDM- Based Power-Line Communications through Filtering Under Different Coding Schemes Sree Lekshmi.K 1, 1 M.Tech Scholar, ECE Department, TKM Institute
More informationComparison between Performances of Channel estimation Techniques for CP-LTE and ZP-LTE Downlink Systems
Comparison between Performances of Channel estimation Techniques for CP-LTE and ZP-LTE Downlink Systems Abdelhakim Khlifi 1 and Ridha Bouallegue 2 1 National Engineering School of Tunis, Tunisia abdelhakim.khlifi@gmail.com
More informationReduction of Interference with Linear Equalizer Using Quarter Subcarrier Mapping Scheme
Reduction of Interference with Linear Equalizer Using Quarter Subcarrier Mapping Scheme Abstract MIMO - O FDM is well-known for its capability and reliability for higher data rate transmission and has
More informationPerformance Analysis of ICI in OFDM systems using Self-Cancellation and Extended Kalman Filtering
Performance Analysis of ICI in OFDM systems using Self-Cancellation and Extended Kalman Filtering C.Satya Haritha, K.Prasad Abstract - Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier
More informationChapter 5 OFDM. Office Hours: BKD Tuesday 14:00-16:00 Thursday 9:30-11:30
Chapter 5 OFDM 1 Office Hours: BKD 3601-7 Tuesday 14:00-16:00 Thursday 9:30-11:30 2 OFDM: Overview Let S 1, S 2,, S N be the information symbol. The discrete baseband OFDM modulated symbol can be expressed
More informationReview paper on Comparison and Analysis of Channel Estimation Algorithm in MIMO-OFDM System
Review paper on Comparison and Analysis of Channel Estimation Algorithm in MIMO-OFDM System IJCSNT Vol.5, No.3, 2016 Sapna Rajput Department of electronics &communication Madhav institute of Technology
More informationOptimized BPSK and QAM Techniques for OFDM Systems
I J C T A, 9(6), 2016, pp. 2759-2766 International Science Press ISSN: 0974-5572 Optimized BPSK and QAM Techniques for OFDM Systems Manikandan J.* and M. Manikandan** ABSTRACT A modulation is a process
More informationHybrid Index Modeling Model for Memo System with Ml Sub Detector
IOSR Journal of Engineering (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 PP 14-18 www.iosrjen.org Hybrid Index Modeling Model for Memo System with Ml Sub Detector M. Dayanidhy 1 Dr. V. Jawahar Senthil
More informationMulti-Carrier Systems
Wireless Information Transmission System Lab. Multi-Carrier Systems 2006/3/9 王森弘 Institute of Communications Engineering National Sun Yat-sen University Outline Multi-Carrier Systems Overview Multi-Carrier
More informationPerformance Analysis of MIMO-OFDM based IEEE n using Different Modulation Techniques
IJSTE - International Journal of Science Technology & Engineering Volume 3 Issue 2 August 26 ISSN (online): 2349-784X Performance Analysis of MIMO-OFDM based IEEE 82.n using Different Modulation Techniques
More informationField Experiments of 2.5 Gbit/s High-Speed Packet Transmission Using MIMO OFDM Broadband Packet Radio Access
NTT DoCoMo Technical Journal Vol. 8 No.1 Field Experiments of 2.5 Gbit/s High-Speed Packet Transmission Using MIMO OFDM Broadband Packet Radio Access Kenichi Higuchi and Hidekazu Taoka A maximum throughput
More informationLow Complexity PAPR Reduction Technique for Coded OFDM Systems with Scrambling Approach
Research Article International Journal of Current Engineering and Technology ISSN 77-4106 014 INPRESSCO. All Rights Reserved. Available at http://inpressco.com/category/ijcet Low Complexity PAPR Reduction
More informationDESIGN, IMPLEMENTATION AND OPTIMISATION OF 4X4 MIMO-OFDM TRANSMITTER FOR
DESIGN, IMPLEMENTATION AND OPTIMISATION OF 4X4 MIMO-OFDM TRANSMITTER FOR COMMUNICATION SYSTEMS Abstract M. Chethan Kumar, *Sanket Dessai Department of Computer Engineering, M.S. Ramaiah School of Advanced
More information