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

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.

Measurement of WLAN strength and evaluation of BER in OFDM based on indoor propagation

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Bit Error Rate Analysis of Wimax Physical Layer Under Sui and Awgn Channel Model With Varying Cyclic Prefix, Modulation Techniques and Coding Schemes

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