A Map Joint Estimation of Cfo and Channel in MIMO-OFDM Full-Duplex Transmissions
Main Article Content
Abstract
This paper studies and develops the joint maximum-a-posteriori (MAP) estimation algorithm of carrier frequency offset (CFO) and block-fading channel responses under the Bayesian approach in full-duplex multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. OFDM transmissions are highly susceptible to carrier frequency offset that also introduces inter-carrier interference (ICI) and gives an irreducible error floor in receiver performance. In the full-duplex wireless system, residual self-interference (SI) after radio-frequency (RF) cancellation stage will act as an additional noise and reduces the operating signal-to-noise ratio (SNR). This paper also provides analytical and numerical results of the proposed estimation accuracy (mean square error - MSE) and bit error rate (BER). The simulation results show that the proposed algorithm can offer good performance (BER of desired signal) and good SI and CFO cancellation over a wide range of SNR and CFO.
Keywords
Full-duplex, CFO, MIMO, OFDM, self-interference, MAP, ML
Article Details
References
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[4] Changyong Shin, Jeffrey G. Andrews and Edward J. Powers, An efficient design of doubly selective channel estimation for OFDM systems, IEEE Transactions on Wireless Communications, pp. 3790-3802, vol. 6, no. 10, Oct. 2007.
[5] Zhongnan Zhang, Xiaomeng Chai, Keping Long, Athanasios V. Vasilakos, and Lajos Hanzo, Full Duplex Techniques for 5G Networks: Self-Interference Cancellation, Protocol Design, and Relay Selection, IEEE Communications Magazine, vol. 64, no. 2, pp. 128-137, May 2015.
[6] Dongkyu Kim, Haesoon Lee, and Daseik Hong, A Survey of In-band Full-duplex Transmission: From the Perspective of PHY and MAC Layers, IEEE Communications Surveys & Tutorials, 2015.
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[10] V. Nguyen-Duy-Nhat, T. Bui-Thi-Minh, C. Tang-Tan, V. N. Q. Bao and H. Nguyen-Le, Joint phase noise and doubly selective channel estimation in full-duplex MIMO-OFDM systems, in Proceedings of International Conference on Advanced Technologies for Communications, pp. 413-418, 2016
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[12] Trevor Look, Ravi Kuchibhotla, Amitava Ghosh, Rapeepat Ratasuk, Wenxin Xiao, Brian Classon, Yufei Blankenship, Downlink control channel design for 3GPP LTE, in Proceedings of IEEE Communications and Networks Conference, pp. 813-818, 2008.