Semi-blind full-duplex relay system with ICA based joint CFO mitigation and equalization

Yufei Jiang, Xu Zhu, Eng Gee Lim, Yi Huang, Zhongxiang Wei, Hai Lin

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

Abstract

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.

Original languageEnglish
Title of host publication2015 IEEE/CIC International Conference on Communications in China, ICCC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509002436
DOIs
Publication statusPublished - 6 Apr 2016
EventIEEE/CIC International Conference on Communications in China, ICCC 2015 - Shenzhen, China
Duration: 2 Nov 20155 Nov 2015

Publication series

Name2015 IEEE/CIC International Conference on Communications in China, ICCC 2015

Conference

ConferenceIEEE/CIC International Conference on Communications in China, ICCC 2015
Country/TerritoryChina
CityShenzhen
Period2/11/155/11/15

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