IOSR Journal of Engineering
This paper presents performance comparison of various modulation techniques in Rayleigh fading channel. In the comparison, the space time coding has been used. The performance comparison are made on the basis of Bit Error Rate(BER) and Symbol Error Rate(SER) performance matrices over Rayleigh fading channel with BPSK,QPSK,8PSK and QAM modulation technique. The comparison results shows that in Rayleigh fading the bit error rate and symbol error rate is least for QAM modulation technique as compared to other three modulation techniques i.e. BPSK, QPSK and 8PSK.