Abstract: In this paper, a physical layer simulator for WiMAX corresponding to the IEEE 802.16e specification is simulated. The bit error rate performance evaluation of a WiMAX system using Reed-Solomon (RS) coding with Convolutional coding with 1/2, 2/3 and 3/4 rated codes in forward error correction channel coding and various digital modulation techniques (BPSK, QPSK, 4QAM and 16QAM) under communication channel AWGN is carried out.

Keywords: OFDM, WiMAX, Reed-Solomon coding, Convolution coding, Additive White Gaussian Noise, Bit error rate.