摘要
直接序列扩频信号(DSSS)具有很强的抗干扰能力、很低的被截获概率和良好的码分多址能力,在个人通信网、无线局域网、第三代移动通信、卫星通信以及军事战术通信等领域得到了广泛应用,因此对它的研究是宽带微弱信号检测与估计以及通信对抗领域的一个重要研究课题。本文针对直扩信号,以双相移相键控(Binary Phase Shift Keying,BPSK)为例,运用小波变换和循环谱相关方法相结合,在非合作情况下,从干扰的角度出发,给出了BPSK信号的参数检测方法和Matlab的仿真结果,为直扩信号的检测探讨了一种更有效的方法。
Direct Sequence Spread Spectrum （DSSS） Communication has been widely applied in Personal communications network, WLAN, the third-generation mobile communications, satellite communications systems, military tactics communications and etc, thanks to the DSSS signals＇ strong anti-interference ability, low probability of being intercepted and outstanding multi-access communication ability. At the same time, the Problem of estimating Signals has been of great research interest with the development of the field of wind-band weak signal processing and communication antagonism. A new effective detection method of DSSS is proposed, combining the method of wavelet transformation with cycle spectral correlation approach, from the perspective of jamming in non-cooperation condition, and a simulation result of signals, for example, BPSK （ Binary Phase Shift Keying ）, is given.
出处
《中国集成电路》
2013年第5期71-76,共6页
China lntegrated Circuit
关键词
扩频信号
检测
小波变换
MORLET小波
Spread Spectrum Signal
Detection
Wavelet Transform
Morlet Wavelet
