Design Error Performance of Space-Frequency Block Coded OFDM Systems With Different Equalizers and For Different Modulation Schemes
Multiple transmit and receive antennas can be used to form Multiple-Input Multiple-Output (MIMO) channels to increase the capacity (by a factor of the minimum number of transmit and receive antennas) and data rate. In this paper, the combination of MIMO technology and Orthogonal Frequency Division Multiplexing (OFDM) systems is considered for wideband transmission to mitigate inter symbol interference and to enhance system capacity. It owns the advantages of both MIMO and OFDM. MIMO-OFDM system exploits the space and frequency diversity simultaneously to improve the performance of system. The coding is done across OFDM subcarriers rather than OFDM symbols.