| 摘要: |
| 在介绍相位噪声定义的基础上，分析了相移键控（PSK）接收系统的本振信号源相
位噪声对误码率的影响。以QPSK调制方式为例，仿真了相位噪声对系统误码率影响，
结果证明了接收系统中本振信号源相位噪声的重要性。以实际工程中使用的本振
信号源为例，推导了相位噪声和信号抖动所导致的BPSK和QPSK接收系统信噪比的限制。理论
分析与工程实践相结合，可以更好地得出相位噪声对PSK接收系统的影响，对接收系统的工
程设计具有一定的指导意义。 |
| 关键词: 相移键控（PSK） 接收系统 相位噪声 误码率 |
| DOI： |
|
| 基金项目: |
|
| Effects of Phase Noise on the Performance of a PSK System |
| HUANG Wei |
| (Southwest China Institute of Electronic Technology，Chengdu 610036，China) |
| Abstract: |
| According to the concept of phase noise, this paper analyses
the effect of LO(Local Oscillator) signal source phase noise on bit error rate
(BER) performance of a phase shift keying
(PSK) communication system. A quadrature phase shift keying(QPSK) system example
is used to predict the effect of phase noise on BER.Simulation result
s prove that the phase noise of LO is important in a re
ceiver system.Taking the LO signal source used in engineering as example,the Sig
nal-to-Noise Ratio(SNR) limitation of BPSK or QPSK receiver system due to phase
noise and jitter is derived.The research has significance in engineering-oriente
d application of recei
ver system. |
| Key words: phase shift keying (PSK) receiver system phase noise bit error rate |
