The Effects of Randomization on Physical Layer Performance of Mobile WiMAX Under Different Communication Channels & Modulation Technique

IEEE 802.16e is a broadband wireless access network capable of delivering high data rates to fixed users as well as portable and mobile ones over long distances. It adopts Orthogonal Frequency Division Multiple Access (OFDMA) to improve multi-path performance in Non-Line-Of-Sight (NLOS) environments. Nowadays, performance evaluation of physical layer under varying channel condition is one of the research themes in Mobile WiMAX. However, most of the research work so far is limited to AWGN and ITU channels. In addition, Forward Error Correction, Reed Solomon Encoding and Bit Interleaver are very critical factor that may affect the overall performance. Therefore, in this work, research are carried out looking at the effect of forward error correction, bit interleaver and Reed Solomon encoding under different SUI channels and modulation technique. The simulation cover important parameter like BLER vs. SNR & BER vs. SNR for the effect of reed Solomon encoding,Interleaving & forward error correction on different SUI channel.