Performance evaluation of phase shift keying modulation technique using BCH code, Cyclic code and Hamming code through AWGN channel model in communication system

This paper presents the performance evaluation of phase shift keying technique modulation such as BPSK and QPSK using error correcting code. Three error correcting codes types; Bose-Chaudhuri-Hocquenghem (BCH) code, Cyclic code and Hamming code were used as the encoder/decoder technique to calculate the bit error rate through an Additive White Gaussian Noise (AWGN) channel. Basically, the performance was determined in term of bit rate error (BER) and signal energy to noise power density ratio (Eb/No). Both BPSK and QPSK were also being compared in the symbol error capability known as t in which expected that the performance is graded in response to the increasing of value of t. All simulations were done using MATLAB R2007b software. In general BCH codes demonstrate best performance than Hamming code and Cyclic code for both BPSK and QPSK.

I INTRODUCTION

Next generation of wireless communication systems aims at delivering high data rate applications and services such as multimedia, web browsing, video streaming, wireless teleconferencing, data and image in local coverage networks. In order to make available these services, higher data rates and quality digital communication systems are required in a bandwidth. A major limiting factor is, however, the multipath propagation phenomenon. It causes frequency-selective fading due to different echoes of transmitted symbols overlapping at the receive end, which can lead to the BER degradation. One away to effectively mitigate the impairments of a multipath fading channel and still have high data rates in a limited bandwidth is to use higher constellation modulation technique.