Performance Evaluation of Training Based Channel Estimation in MIMO-OFDM Wireless SystemÂ

Abstract

In modern wireless communication systems, multiple input multiple output (MIMO) combined with orthogonal frequency division multiplexing (OFDM) can achieve reliable high data rate and better spectral efficiency. Channel estimation technique based on pilot arrangement for multiple input multiple output (MIMO) for Rayleigh fading channel is proposed in this paper. The channel estimation using block type pilot arrangement is carried out with Least square (LS) and Minimum mean square (MMSE) estimation algorithms through matlab simulation. The performance of channel estimation techniques LS and MMSE are compared on the basis of mean square error (MSE) for 2x2 and 4x4 MIMO-OFDM system.