TY - GEN
T1 - Semi-blind full-duplex relay system with ICA based joint CFO mitigation and equalization
AU - Jiang, Yufei
AU - Zhu, Xu
AU - Lim, Eng Gee
AU - Huang, Yi
AU - Wei, Zhongxiang
AU - Lin, Hai
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/4/6
Y1 - 2016/4/6
N2 - We propose a semi-blind independent component analysis (ICA) based receiver structure for an uplink orthogonal frequency division multiplexing (OFDM) based wireless system with multiple users, an amplify-and-forward (AF) relay in full-duplex mode, and a multi-antenna base station. We propose a one-step solution to mitigate multiple integer CFOs without explicit CFO estimation. Also, channel equalization is performed jointly with CFO mitigation by using ICA. A non-redundant precoding designed offline is applied to the transmitted signals, requiring no real-time training or extra transmission power, to enable integer CFO mitigation and ambiguity elimination for the ICA output signals at the base station. Simulation results show that the proposed scheme provides a bit error rate (BER) performance comparable to the ideal case with perfect channel state information (CSI) and no CFO. It is also much more robust against the fractional CFO estimation error than existing methods. Furthermore, the effect of imperfect self-interference cancellation at the full-duplex relay on performance is investigated.
AB - We propose a semi-blind independent component analysis (ICA) based receiver structure for an uplink orthogonal frequency division multiplexing (OFDM) based wireless system with multiple users, an amplify-and-forward (AF) relay in full-duplex mode, and a multi-antenna base station. We propose a one-step solution to mitigate multiple integer CFOs without explicit CFO estimation. Also, channel equalization is performed jointly with CFO mitigation by using ICA. A non-redundant precoding designed offline is applied to the transmitted signals, requiring no real-time training or extra transmission power, to enable integer CFO mitigation and ambiguity elimination for the ICA output signals at the base station. Simulation results show that the proposed scheme provides a bit error rate (BER) performance comparable to the ideal case with perfect channel state information (CSI) and no CFO. It is also much more robust against the fractional CFO estimation error than existing methods. Furthermore, the effect of imperfect self-interference cancellation at the full-duplex relay on performance is investigated.
UR - https://www.scopus.com/pages/publications/84967224456
U2 - 10.1109/ICCChina.2015.7448659
DO - 10.1109/ICCChina.2015.7448659
M3 - Conference Proceeding
AN - SCOPUS:84967224456
T3 - 2015 IEEE/CIC International Conference on Communications in China, ICCC 2015
BT - 2015 IEEE/CIC International Conference on Communications in China, ICCC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE/CIC International Conference on Communications in China, ICCC 2015
Y2 - 2 November 2015 through 5 November 2015
ER -