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Performance Analysis of Color Image Transmission over Rayleigh Fading Channel in an Outdoor Environment

Md. Anam Mahmud and Tanvir Ahmed
Electrical and Electronic Engineering Department, Rajshahi University of Engineering & Technology, Rajshahi, Bangladesh
Abstract—In this paper we investigate the impact of different equalization techniques for digital communication systems that employ MPSK and MQAM modulation technique to transmit information such as color image over Rayleigh fading AWGN channel. Performance is analyzed in terms of bit error rate by MATLAB simulation. For the simulation of Rayleigh fading channel the different property values such as path delay, average path gain, maximum Doppler shifts Doppler spectrum parameters etc. are chosen carefully to show a realistic fading channel. Stepsize, forgetfactor etc. for different adaptive algorithms used by Decision Feedback Equalizer (DFE), Linear Equalizer (LE) are also chosen properly. To transmit color image lossy compression has been applied which provides 82% less data than uncompressed JPEG image. All the analysis shows that for Rayleigh fading channel linear equalizer with LMS adaptive algorithm is the worst equalizer and Maximum Likelihood Sequence Estimate (MLSE) equalizer provides best equalization for limiting signal dispersion and ISI.
 
Index Terms—Rayleigh fading, M-ary modulation, equalizer, lossy image compression, SNR, LMS, RLS

Cite: Md. Anam Mahmud and Tanvir Ahmed, "Performance Analysis of Color Image Transmission over Rayleigh Fading Channel in an Outdoor Environment," International Journal of Electronics and Electrical Engineering, Vol. 4, No. 6, pp. 547-553, December 2016. doi: 10.18178/ijeee.4.6.547-553
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