摘要
研究了正交解调器IQ误差对OFDM解调器的影响,提出了一种简单易行的IQ误差自适应校准方法。仿真结果表明,WLAN802.11a通信系统中单纯的采用基带AGC不能消除IQ误差,使用该方法校准后的OFDM解调器性能得到了很大改善。研究结果为研制OFDM宽带接收机提供了参考。
The effect of IQ imbalance to OFDM demodulator is studied in this paper.A simple method of IQ imbalance adaptive correction is suggested.Simulation result shows that IQ imbalance can not be eliminated using baseband AGC in WLAN802.11 communication systems;the performance of OFDM demodulator using suggested method is improved greatly.The result can be a reference for the design of OFDM wideband receiver.
出处
《无线电通信技术》
2007年第5期53-55,共3页
Radio Communications Technology
