MIMO Techniques With Channel Estimation Approaches for High Data Rate

In recent years, the demand for high data rate transmission has increased in wireless communications. High data rate transmission may require a very complex equalizer, which is not desirable in wireless communications. Orthogonal Frequency Division Multiplexing (OFDM) is a transmission scheme for which a receiver can be implemented easily without an equalizer. Therefore, the OFDM technique has attracted attention for many wireless applications. OFDM is a transmission technique that divides the data into several frequencies subchannels whose bandwidth is less than the total data rate. The uncoded performance of an OFDM system can be different in different frequency selective channels.