摘要
针对传统解调方法应用于猝发信号解调的缺点,提出了一种运用循环谱解调猝发信号算法,采用循环谱快速估计猝发信号的载波频率,根据载波频率进行猝发信号的解调,对以BPSK和QPSK调制方式的猝发信号进行了仿真。仿真结果显示:在满足一定约束条件下,该方法可以快速地捕获猝发信号的载波频率,从而实现了在较短的时间内解调出猝发信号,并且采用此算法对猝发信号进行解调的结果和理论分析一致。
To solve the problems of burst signal demodulation based on traditional demodulation methods,this paper puts forward a novel burst signal demodulation algorithm based on cyclic spectrum.The algorithm uses cyclic spectrum to estimate the carrier frequency,then coherent demodulation is applied to demodulate the burst signal.BPSK and QPSK modulation signals are used to verify the algorithm,and the simulation results show that the proposed algorithm can estimate the carrier frequency of the burst signal quickly and accurately on certain restrictions,and the algorithm demodulates the burst signal properly.
出处
《计算机工程与应用》
CSCD
北大核心
2011年第34期145-148,共4页
Computer Engineering and Applications
基金
国家自然科学基金(No.60972049/F010202)~~
关键词
猝发信号
循环谱
解调
载波同步
burst signal
cyclic spectrum
demodulation
carrier estimation
