Abstract—Use of Space-Frequency Block Coded (SFBC) OFDM signals is advantageous in high-mobility broadband wireless access, where the channel is highly time—as well as frequency-selective because of which the receiver experiences both Inter-Symbol Interference (ISI) as well as Inter- Carrier Interference (ICI). ISI occurs due to frequency and/or time selectivity of the channel caused due to the violation of the quasi-static fading. In addition, ICI which results in loss of orthogonality among the subcarriers is due to time selectivity of the channel. In this paper, we are concerned with the detection of SFBC-OFDM signals on time- and frequency-selective MIMO channels. Specifically, we investigate the interference cancellation techniques and evaluate the performance of an receiver for SFBC-OFDM to mitigate the effects of ICI induced by the time selectivity of the channel.

Index Terms—SFBC, OFDM signals, ICI migigation

Cite: T Madhulatha and N Sreekanth, "ICI MITIGATION IN SFBC-OFDM SYSTEMS," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 3, No. 1, pp. 43-51, January 2014.