Performance Comparison of BPSK, QPSK and 16-QAM Modulation Schemes in OFDM System using Reed-Solomon Codes

This paper present the performance comparison of the different modulation schemes in orthogonal frequencydivision multiplexing (OFDM) communication system using Reed-Solomon (RS) codes in term of BER (bit error rate). The comparison analysis is done in OFDM system on the effects of three different modulation schemes BPSK, QPSK and 16-QAM being used. The OFDM system with RS encoder is used as a reference for MATLAB simulation, implementation and analysis. It is shown that from among the modulation schemes studied, the OFDM system with RS encoder using BPSK modulation perform better BER probability under all SNR (signal to noise ratio) conditions as compared QPSK and 16-QAM OFDM systems.