摘要
MIMO OFDM无线多媒体通信系统中,载波频偏导致接收信号的载波不再正交产生公共相位误差(CPE),降低了OFDM的性能。为消除CPE的影响,本文提出在MIMO检测之前,分别利用各天线支路的CPE对接收到的每天线支路信号作补偿。模拟结果表明,该方法能提高MIMO OFDM系统的误比特率性能。
Carrier frequency offset results in common phase error （CPE） which has primary bad effects on MIMO OFDM system. In order to reduce the CPE, in this paper, a new approach is proposed to use two different CPE corrections, one per received symbol in time and introduced before Alamouti decoding. Simulation results indicate that it will improve the BER performance.
出处
《真空电子技术》
2007年第3期23-24,51,共3页
Vacuum Electronics
