Nội dung của bài viết này nhằm phát triển một giải thuật ước lượng hậu nghiệm cực đại MAP kết hợp giữa độ lệch tần số móng mang CFO và kênh truyền theo hướng tiếp cận Bayesisan trong hệ thống truyền dẫn ghép kênh phân chia theo tần số trực giao OFDM song công đa anten MIMO. | 026-030 1 1 2 1 2 -6- -02-2017 -a- -input multiple- - n không - -to-noise . Bài bá T Full-duplex CFO MIMO OFDM self-interference MAP ML. Abstract This paper studies and develops the joint maximum-a-posteriori MAP estimation algorithm of carrier frequency offset CFO and block-fading channel responses using 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 desire signal and good SI and CFO cancellation performance for a large SNR or CFO range Keywords Full-duplex CFO MIMO OFDM self-interference MAP ML. 026-030 m t Ng k m t n m r y p l m t r No T Nt Nr N 026-030 P H fs fc GHz Ng M 7 P 2 026-030 026-030 channel estimation for OFDM systems IEEE Transactions on Wireless Communications pp. 3790- 3802 vol. 6 no. 10 Oct. 2007. 5 Zhongshan 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 Daesik Hong A Survey of In-band Full-duplex Transmission From the Perspective of PHY and MAC Layers IEEE Communications Surveys amp Tutorials 2015. 7 Michael Speth Stefan A. Fechtel Gunnar Fock and Heinrich Meyr Optimum receiver design for wireless broad-band systems using OFDM-part I IEEE .
