摘要
跳频系统中频率合成器的输出信号在频率切换时会产生相位抖动,对跳频OFDM(FH-OFDM)系统的性能造成很大的影响。从分析频率合成器的结构入手,建立了系统相位抖动模型,详细分析并仿真验证了该模型中的各个参数对系统性能的影响,并在此基础上建立了MPSK调制方式下相位抖动对FH-OFDM系统误码率影响的统一的表达式。
Phase jitter occurs when frequency synthesizer changes its frequency in frequency-hopped communications, which severely affects the performance of frequency hopped OFDM （FH-OFDM） systems. The model of phase jitter was proposed based on the structure of the frequency synthesizer. The effects of the parameters of phase jitter on the performance of systems were investigated and simulated and a unified express of bit error rates （SER） was derived for the MPSK FH-OFDM system with phase jitter.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2006年第12期3486-3490,共5页
Journal of System Simulation
