本振相位噪声对接收机性能的影响  

Effect of Local Oscillator Phase Noise on Receiver Performance

作　　者：李永波[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2012年第4期562-565,共4页Telecommunication Engineering

摘　　要：针对工程中本振相位噪声对接收机的影响常难以估量的问题,提出利用等效相位白噪声谱密度进行评估的方法。通过分析相位噪声的产生及其对剩余误码率和动态范围的影响机理,仿真了不同相位噪声对误码率的影响程度。通过仿真结果可知:相位噪声对接收机性能具有重要的影响,工程中应针对不同的应用场合要求合理的相位噪声指标。To solve the problem that the effect of local oscillator phase noise on the receiver performance is immeasurable in practice, the method of using equivalent white noise to evaluate the effect is proposed, Through analysing the generation of phase noise, and the affection mechanism of residual BER and dynamic range, the influence degrees of different phase noises on BER are simulated. The simulation results show that phase noise is important to the performance of receiver. For different applications, the reasonable phase noise should be required.

关 键 词：超外差接收机 相位噪声 本振 剩余误码率 动态范围 

分 类 号：TN911.4[电子电信—通信与信息系统]