Abstract—This paper proposes an advanced receiver with joint inter-carrier interference (ICI) self cancellation and channel equalization for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems over rapidly time-varying channel environment. The existing schemes that deal with the ICI cancellation and channel equalization can’t provide satisfactory performance over time-varying channels. In term of error rate performance and low computational complexity, ICI self cancellation is the best choice. So, this paper proposes an adaptive receiver to deal with the problem of joint ICI self cancellation and channel equalization. We employ the adaptive phase rotations in the receiver to effectively track the CFO variations without feeding back the CFO estimate to the transmitter as required in traditional existing scheme. We also give some simulations to verify the proposed scheme.

Index Terms—Key words: MIMO-OFDM, inter-carrier interference, ICI self cancellation, channel estimation.

Lider Jeng and Youting Lin are with Department of Electronics Engineering, Chung-Yuan Christian University, Chung-Li, Taiwan. The authors are with Department of Electrical Engineering, National Chung-Hsing University, Taichung, Taiwan.

Cite:Yiwei Jhang, Fangbiau Ueng, Lider Jeng, Yukuan Chang, Youting Lin, "A Novel MIMO-OFDM Adaptive Receiver in Time-Varying Channels," International Journal of Computer and Communication Engineering vol. 6, no. 3, pp. 181-192 , 2017.