Performance analysis and comparison of m x n zero forcing and MMSE equalizer based receiver for mimo wireless channel
نویسندگان
چکیده
Wireless transmission is affected by fading and interference effects which can be combated with equalizer.The use of MIMO system promises good improvement in terms of spectral efficency,link relaibility andSignal to Noise Ratio (SNR). The effect of fading and interference always causes an issue for signal recovery in wireless communication. Equalization compensates for Intersymbol Interference (ISI) created by multipath within time dispersive channels. This paper analyses the performance of Zeroforcing and MMSE equalizer for MIMO wireless chaneels. The simulation results are obtained using MatLab tool box version 7.0 at RF signal processing lab.The Bit Error Rate (BER) characteristics for the various transmitting and receiveing antennna is simulated in matlab tool box and many advantages and disdvantagesof the system is descrbed. The simulation results show that the equalizer based zero forcing receiver is good for noise free channel and is successful in remving ISI,but MMSE is a better choice than ZF in terms of BER charateristics and under Noise performance.
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