BIT ERROR RATE, PERFORMANCE ANALYSIS AND COMPARISION OF M x N EQUALIZER BASED MAXIMUM LIKELIHOOD AND MINIMUM MEAN SQUARE ERROR MIMO RECEIVER FOR WIRELESS CHANNEL
نویسندگان
چکیده
This paper investigates on the performance comparison of m x n equalizer based maximum likelihood (ML) and minimum mean square error (MMSE) MIMO receiver for wireless channel. The effect of fading and interference effects can be combated with equalizer. This paper also analyses the performance of MMSE equalizer based receiver for MIMO wireless channel. The bit error rate (BER) characteristics for the various transmitting and receiveing antennna are simulated in Matlab tool box and many advantages and disadvantages of the system are described. The simulation carried out in signal processing lab show that the MMSE equalizer based receiver is a good choice for removing some inter symbol interference (ISI) and minimizes the total noise power. However the simulation results show ML equalizer performance better. The simulation tool box used is Matlab V.7.0 and the results were obtained at RF signal processing lab. The results show that the BER decreases as the m x n antenna configurations is increased for both ML and MMSE equalizer based detector. ML equalizer based detector out performs the MMSE receiver in terms of BER characteristics.
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