南京理工大学学报（自然科学版）2017，Vol.41Issue(6)：765-768,791,5.DOI:10.14177/j.cnki.32-1397n.2017.41.06.016
同相正交不平衡影响下的TDD MIMO-OFDM信道互易性补偿
Compensation of channel non-reciprocity for TDD MIMO-OFDM system with IQ imbalance
摘要
Abstract
The compensation of channel non-reciprocity for time-division duplex ( TDD ) multiple input multiple output orthogonal frequency-division multiplexing ( MIMO-OFDM ) system with receiver in-phase and quadrature-phase( IQ) imbalance is investigated to mitigate the loss of non-re-ciprocity channel. A channel compensation scheme based on a compensation matrix is proposed by building a time-domain channel non-reciprocity compensation model. An estimation scheme of the compensation matrix aided by pilots is proposed by designing the pilot symbols and utilizing Gaussian elimination method. Simulation results show that, this scheme can compensate the channel non-reciprocity of the TDD MIMO-OFDM system effectively,and the system performance is similar to the system with ideal IQ branches.关键词
同相与正交支路不平衡/时分双工/多输入多输出/正交频分复用/信道互易性补偿/高斯消元法/补偿矩阵Key words
in-phase and quadrature-phase imbalance/time-division duplex/multiple input multiple output/orthogonal frequency-division multiplexing/channel non-reciprocity compensation/Gaussian elimination method/compensation matrix分类
信息技术与安全科学引用本文复制引用
梁彦,宋荣方,李飞,季薇..同相正交不平衡影响下的TDD MIMO-OFDM信道互易性补偿[J].南京理工大学学报（自然科学版）,2017,41(6):765-768,791,5.基金项目
国家自然科学基金(61501254 （）
61471200 （）
61603197) （）
中国博士后科学基金(2014M561692) （2014M561692）
江苏省博士后科研资助计划(1402087C) （1402087C）
南京邮电大学引进人才科研启动基金(NY213063) （NY213063）
