MIMO-OFDM System's Channel Estimation

In this paper, the basic concepts of Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output (MIMO) systems are addressed. The various channel estimation techniques such as training based, blind channel, semi-blind channel based algorithms are discussed. Also different optimization techniques, such as DecisionDirected Channel Estimation Implementation for Spectral Efficiency Improvement in Mobile MIMOOFDM, Adaptive Channel Estimation Techniques for MIMO-OFDM Systems are reviewed for training based channel estimation algorithms