Simulation of ETSI’s High Performance Local area Network Type 2(HIPERLAN/2) is presented. In this paper, we compare HIPERLAN/2 performance via a MATLAB/Simulink simulation with & coding rate for different modulation schemes for additive white Gaussian noise (AWGN) channel. MATLAB/Simulink modeling demonstrated that the performance of code rate has a remarkable degradation in the Bit Error Rate (BER)compared to code rate which is due to the considerable frequency selectivity of the channel. In this paper we showed that the BERs with code rate 1/2 for different modulation schemes change more slowly and thus yield more stable modes with regard to changing channel conditions than code rate. With coding rate 1/2, Signal to Noise Ratio (SNR) improvement compared to coding rate 3/4 (with puncturing) is achieved
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