Performance analysis of different modulation schemes using OFDM techniques in Rayleigh fading channel

Mohammed Safiqul Islam; Gouri Rani Barai; Atiq Mahmood

doi:10.14331/ijfps.2011.330006

Authors

Mohammed Safiqul Islam Electrical and Electronic Department, American International University-Bangladesh (AIUB) Author
Gouri Rani Barai Electrical and Electronic Department, American International University-Bangladesh (AIUB) Author
Atiq Mahmood Electrical and Electronic Department, American International University-Bangladesh (AIUB) Author

DOI:

https://doi.org/10.14331/ijfps.2011.330006

Keywords:

OFDM, Gray Coded Bit Mapping, SER, Rayleigh fading, M- ary PSK, M- ary QAM

Abstract

This paper deals with the communication system that uses M-ary Phase-Shift-Keying (M-PSK) and M-ary Quadrature Amplitude Modulation (M-QAM) to transmit information using OFDM technique over Rayleigh communication channel. In terms of Symbol Error Rate (SER), the performance of different modulation schemes using OFDM techniques in Rayleigh channel is analyzed. For different types of modulation schemes (QPSK, 16-QAM, 16-PSK, 64-QAM, 64-PSK) gray coded bit mapping has been used with OFDM techniques. So, better performance is shown in different modulation scheme by using gray coded bit mapping. Here in this paper, it is our goal to show the way through which the SNR result varies between M-PSK and M-QAM.

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