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MIMO techniques with Channel Estimation Approaches for High Data Rate


Manoj Kumar Das, D.RajaVeerappa


Vol. 12  No. 1  pp. 134-145


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. Coded OFDM offers very robust communications with the frequency diversity that result from channel coding and interleaving. The proposed MIMO OFDM receiver uses channel estimation approach. The function of channel estimation is to form an estimate of the amplitude and phase shift caused by the wireless channel from the available pilot information. The objective of the project is to improve the system performance by reducing the BER or FER.


Multi-input Multi-output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM), Code division multiple access (CDMA)