摘要
同时多信号的合成往往会导致合成信号的包络具有较大的起伏,产生较高的峰均比,这会大大降低信号的有效功率。应用限幅法可以很好地降低信号的峰均比,但同时会引起合成信号的频谱展宽。介绍了信号合成的基本原理,分析了合成信号峰均比的统计特性,并对限幅法引起的信号频谱展宽进行了理论分析和仿真验证。
The synthesis of multiple signals often make the envelope of synthesized signal up and down sharply and produce higher peak-to-average power ratio（PAPR）,which will reduce the effective power of the signal greatly.Amplitude limit method can be used to reduce the signal PAPR well but at the same time will make the spectrum of synthesized signal spread.This paper introduces the basic principle of the signal synthesis,analyzes the statistical properties of PAPR of synthesized signal,and performs theory analysis and simulation validation to the signal spectrum broadening caused by amplitude limit method.
作者
李海涛
杨娟
LI Hai tao;YANG Juan(Xidian University,Xi＇an 710071,China)
出处
《舰船电子对抗》
2018年第2期71-75,84,共6页
Shipboard Electronic Countermeasure
关键词
合成信号
峰均比
限幅法
频谱展宽
synthesized signal
peak to average power ratio
amplitude limit method
frequency spectrum broadening
