摘要
复合调制信号由于其优异的性能,近几年成为许多学者的一个重要研究课题。基于对复合调制信号自相关函数特征的详细理论推导和分析,从高分辨率角度出发,研究了不同PSK调制对FSK/PSK信号分辨率的影响。在未引入旁瓣抑制网络情况下,获得了一种均匀二相编码与Barker码扩展序列组合的新型PSK调制方式,能较大地降低FSK/PSK信号的旁瓣。理论分析和计算机仿真表明:这种新型的复合调制方式可使旁瓣值达到-32.12 dB。这对通信系统、雷达以及信息安全等方面信号调制方式的选取有着重要的参考意义。
In the recent years, hybrid modulation signal has become an important research project for its good performance. In this paper,based on detailed theory deducing and analyzing to hybrid modulation autocorrelation function character, from high resolution,studying the effection of different PSK modulation on FSK/PSK signal resolution. In the condition that doesnt introduce sidelobe suppression filter, a new kind of PSK modulation that combine uniform binary code with Barker Code which can greatly suppress FSK/PSK signal sidelobe is acquired. Theoretical analysis and computer simulation show that this new modulation can make sidelobe -- 32.12 dB. The conclusion has an important significance to communication system, radar and information safety.
出处
《现代电子技术》
2009年第5期11-13,共3页
Modern Electronics Technique
