Reduction of ICI in MIMO-OFDM system using self-cancellation with space frequency block code

In the MIMO-OFDM system, the carrier frequency offset and phase noise cause loss of orthogonality among subcarriers and leads to intercarrier interference (ICI). This paper considers ICI self-cancellation schemes using space frequency block code (SFBC) in MIMO-OFDM system. In this paper we have analytically derived expression for common phase error (CPE), ICI, carrier to interference (CIR) and BER of the system. The performance of the system in the presence of frequency offset and phase noise has been evaluated in terms of BER. Results show that BER of SFBC can be increased when normalized frequency offset increases. The BER performance for SFBC in MIMO-OFDM system has been reduced about 3.8 dB at BER of 10^-8 respectively than OFDM system.