通信学报2017，Vol.38Issue(1)：141-148,8.DOI:10.11959/j.issn.1000-436x.2017016
全双工终端的收发I/Q不平衡估计与补偿算法
Estimation and compensation for transmitter and receiver I/Q imbalance of full-duplex terminals
摘要
Abstract
In order to reduce I/Q imbalance of the full-duplex terminal with direct-conversion transceiver, an algorithm based on self-interference signal was proposed for the estimation and compensation of I/Q imbalance in both transmitter (Tx) and receiver (Rx). Without the perfect transmitter or receiver for I/Q imbalance estimation, the self-interference sig-nal from Tx chain to Rx chain was used for parameter estimation and separation, and the Tx and Rx I/Q imbalance pa-rameters were obtained, respectively. Then the pre-compensation before transmission and the correction after receiving was processed, so that there was nearly no I/Q imbalance in this full-duplex terminal from the view of the other terminals, and the complexity of the signal processing will be reduced as a result of the absent of the I/Q imbalance estimation. The simulation results show that the proposed algorithm can effectively estimate and compensate the I/Q imbalance of the full-duplex Tx & Rx terminal, and improve the overall signal quality and the system performance.关键词
全双工/自干扰信号/I/Q不平衡/估计/补偿Key words
full-duplex/self-interference signal/I/Q imbalance/estimation/compensation分类
信息技术与安全科学引用本文复制引用
吴皓威,赵俊波,徐浩然,欧静兰..全双工终端的收发I/Q不平衡估计与补偿算法[J].通信学报,2017,38(1):141-148,8.基金项目
国家高技术研究发展计划("863"计划)基金资助项目( No.2015AA7072014C ) （"863"计划）
重庆市院士基金资助项目(No.cstc2014yykfys90001) （No.cstc2014yykfys90001）
中央高校基本业务费基金资助项目(No.106112013CDJZR165502, No.CDJZR14100050) The National High-Tech R&D Program (863 Program) (No.2015AA7072014C), Chongqing Academician Fund Project (No.cstc2014yykfys90001), Fundamental Research Funds for The Central Universities (No.106112013CDJZR165502, No.CDJZR14100050) （No.106112013CDJZR165502, No.CDJZR14100050）
