基于自制小波的EBPSK信号检测器

摘要

Aiming at the key difficult problem of detecting ting modulation differences of the extended binary phase shift keying (EBPSK) modulation,a novel high-speed and high-efficiency modulation scheme,this paper proposes a new EBPSK signal detector based on custom wavelets,and the custom wavelets are constructed in the light of the envelop of impacting filtered EBPSK modulation waveforms.The custom wavelet based detector was compared with the ones based on typical wavelets by simulation,and the results showed that the proposed custom wavelet based detector exhibited the best performance over additive white Gaussian noise (AWGN) channels.The detector can also well detect the position and scale signals in low SNR cases,and its computational complexity is lower.%针对全新的高速高效调制方案——扩展的二元相移键控(EBPSK)调制的微小调制差别检测难题,在研究EBPSK调制波形及简单的冲击幅度检测的基础上,提出了一种基于自制小波的EBPSK检测器,其中自制小波是基于通过冲击滤波器后产生的冲击波形包络来构造的.通过仿真实验进行了与一些经典的小波检测器的比较,结果表明在加性高斯白噪声(AWGN)信道下,基于自制小波的EBPSK检测器性能更佳,在较低的信噪比条件下,仍能较好地检测出信号的位置和尺度,且算法实现复杂度较低.