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Performance Analysis of Rayleigh and Rician Channels in Orthogonal Frequency Division Multiplexing

Sachin Vasant Chaudhari

Abstract


Orthogonal frequency division multiplexing is a extraordinary case of multi-carrier transmission which can support high data rate prerequisite of multimedia based wireless systems. Since evaluation of channel is an vital part of OFDM systems, it is complex to comprehend the basis of channel evaluation techniques for orthogonal frequency division multiplexing scheme, so that the most appropriate technique can be applied. The channel evaluation at pilot frequencies is based on Least Square & Minimum Mean Square Error evaluation method by utilizing modulation scheme such as 16- QAM, Two different channel models such as Rayleigh and Rician will be analyzed on the performance basis to verify the channel response. In this paper we have implemented MATLAB simulation of OFDM to verify how the Bit Error Ratio of a transmission varies when Signal to Noise Ratio (S/N Ratio) and Multi propagation effects are changed on transmission channel.


Keywords


S/N, OFDM, Bit Error Rate, IS.

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References


Mehmet Kemal Ozdemi (2007) “Channel Estimation for Wireless OFDM Systems”, IEEE Communications Surveys & Tutorials 2nd Quarter 2007, Vol .9, (2), pp.18-48.

Ming-Xian Chang and Yu T. Su (2002) “Model-Based Channel Estimation for OFDM Signals in Rayleigh Fading”, IEEE transactions on communications April 2002, Vol. 50, (4), pp.540-544.

Taewon Hwang, Chenyang Yang (2009)” OFDM and Its Wireless Applications: A Survey” IEEE transactions on vehicular technology, May 2009, vol. 58, no. 4, pp 1673-1694.

Ye (Geoffrey) Li(1998) “Robust Channel Estimation for OFDM Systems with Rapid Dispersive Fading Channels” IEEE Transactions on Communications, Vol. 46(7), pp.902-915.

Suchita Varade (2012) “BER Comparison of Rayleigh Fading, Rician Fading and AWGN Channel using Chaotic Communication based MIMO-OFDM System” International Journal of Soft Computing and Engineering (IJSCE) January 2012, ISSN: 2231-2307, Vol .1, (6), pp. 107-115.

Hamid Nooralizadeh (2011) “Single and Multiple Estimation in MIMO Rician Fading Channels” International Conference on Computer Communication and Management Proc .of CSIT vol.5, pp.481-487.

Fabien Delestre and Yichuang Sun (2010) “A Channel Estimation Method for MIMO-OFDM Mobile WiMax Systems” ISWCS 2010, pp.956-960.

Md. Anamul Islam (2012)” BER Performance Analysis of a Real Data Communication through WiMAX-PHY Layer over an AWGN and Fading Channels” International Journal of Electrical & Computer Sciences IJECS-IJENS Vol: 10 No: 04,pp.13-16.

Gurpreet Singh Saini (2012) “Improving Channel Estimation Accuracy in OFDM System Using MATLAB Simulation” Engineering Science and Technology: An International Journal (ESTIJ) April 2012, ISSN: 2250-3498, Vol.2, (2) pp. 285-287.

K. Murali (2012) “A Novel Design of Time Varying Analysis of Channel Estimation Methods in OFDM”, IJMIE, July 2012, Vol. No.2 (7), pp .307-317.

Rashi(2012) “Study of Performance of OFDM over Various Channels”, International Journal of Electronics and Computer Science Engineering (IJECSE), ISSN- 2277-1956,pp. 1254-1259.

Surinder Singh (2011) “Performance Evaluation of Channel Estimation in OFDM System for Different QAM and PSK Modulations”, International Journal of Electrical and Computer Engineering (IJECE) December 2011, Vol.1, (2), pp. 140~150.

Orlandos Grigoriadis (2008) “BER Calculation Using Matlab Simulation For Ofdm Transmission” International MultiConference of Engineers and Computer Scientists IMECS March 2008, Vol 2, pp. 19-21.

Saqib Saleem (2011)”Optimization of LSE and LMMSE Channel Estimation Algorithms based on CIR Samples and Channel Taps” International Journal of Computer Science Issues (IJCSI) January 2011, Vol. 8(1), ISSN 1694-0814,pp .437-443.


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