摘要
针对采用高阶调制的正交频分复用(OFDM)系统在前端模拟处理过程中易遭受到同相相位和正交相位(IQ)不平衡影响的问题,提出了一种新的OFDMWLAN系统接收机IQ不平衡估计和补偿方法。该方法利用较少的时域训练序列进行IQ不平衡参数的估计及补偿。仿真结果表明,该方法在降低了计算复杂度的同时,也获得了较好的估计性能。
For the question that Orthogonal Frequency Division Multiplex （OFDM） using a high-order modulation suffers from serious effects of In-phase and Quadrate-phase （IQ） imbalance in a front-end analog processing, a new IQ imbalance estimation and compensation method is proposed for OFDM WLAN receivers. The proposed method estimates the IQ imbalance parameters and corrects effect of IQ imbalance using fewer time-domain train- ing signals. The simulation results show that the proposed scheme is very simple and robust.
出处
《电讯技术》
北大核心
2013年第5期570-573,共4页
Telecommunication Engineering
基金
国家科技重大专项(2012ZX03001025)~~
