BER Comparison of RS and BCH Coded OFDM Transmission over Noisy Channel

OFDM has recently been applied widely in wireless communication system due to its high data rate transmission capability with high bandwidth efficiency. Error control codes are used to protect information from errors that can occur during transmission Reed Solomon (RS) and BCH codes is one of the most important and best known classes of non binary [5]. In the present study a simulink of RS and BCH are done using single carriers transceivers, to observe the performance of RS and BCH code and choose the effective parameters that can improve OFDM system. Evaluation of Bit Error Rate (BER) performance for RS and BCH code as a function of code rate and block size are tested. This testing is applied to single carrier system with different channel model using QPSK technique. BER performance over Rayleigh channel and Rician channels are done respectively. In this paper, the system throughput of a working OFDM system has been enhanced by adding RS and BCH coding. The bit error rate (BER) performance degradation of OFDM system is investigated in different channel. We consider the effects of BER both in Rayleigh and Rician. An environment theoretical approximate calculation method is also derived of BER for binary using quadrature phase shift keying (QPSK) modulation schemes in OFDM systems. In addition, the method of BER calculation is validated by simulinks. In this paper Improvement of performance elevation criteria of RS and BCH coded OFDM TRANSMISSION over noisy channel is analyzed using simulink. The Simulink Communication tool and basic library tools are use with standard values in IEEE802.11A.