Comparison of BER performances of MMSE equalizer and viterbi algorithm for the MLSE solution in 60 GHz communication channel

In this paper, Intersymbol Interference (ISI) which is one of the most significant problems for the 60 GHz communication channel is analyzed. 60 GHz indoor channel model is developed by IEEE802.15.3c Task Group. By using this model, variation of Bit Error Rate (BER) with MMSE (Minimum Mean Square Error) equalizer is investigated. BPSK modulated data sequence is transmitted on different Signal-to-Noise Ratios (SNR) and different bit packet lengths. Performance of MMSE equalizer is analyzed in LOS and NLOS environments. As a result, obtained results are compared with output of Viterbi algorithm that is used for the MLSE (Maximum Likelihood Sequence Estimation) solution.