Adaptive Channel Estimation Technique for MIMO-OFDM
A Multiple-Input Multiple-Output (MIMO) communication system combined with the Orthogonal Frequency Division Multiplexing (OFDM) modulation technique can achieve reliable high data rate transmission over broadband wireless channels. The most important research topic in the wireless communications is the adaptive channel estimation where the channel is rapidly time-varying. In this paper performance analysis of channel estimation through adaptive channel estimation algorithms for estimating channel using different modulation scheme are investigated. The estimation of channel at pilot frequencies is based on Least Mean Square and Recursive Least Square channel estimation algorithm.