FQPSK-KF的调制特性与信道性能分析  

FQPSK-KF Modulation Characteristic and Analysis of its Performance in Channels

作　　者：秦玉峰[1] 何兵哲[1] 范晓彦[2] 

机构地区：[1]中国空间技术研究院504所,西安710100 [2]西安电子科技大学雷达信号处理国家重点实验室,西安710071

出　　处：《电讯技术》2006年第6期98-103,共6页Telecommunication Engineering

基　　金：总装"十五"航天基金资助项目

摘　　要：研究了FQPSK-KF的调制特性,理论推导了其包络特性,仿真计算了其功率谱密度(PSD),并与一些常见调制方式进行了比较;然后在卫星数传信道的基础上,通过建立不同的信道模型,对这一调制方式的调制性能进行分析比较,结果表明这一调制方式具有一定的应用前景。The modulation characteristic of Feher and Kato＇s patented Quadrature Phase Shift Keying （ FQPSK - KF） is studied, including theoretic analysis of its envelope trait and computation of its power spectral density（PSD）. On the basis of statellite data transmission channel, various models are established to simulate the band - limited and non - linear channels. Analysis and comparison of the modulation shows that compared with QPSK and IJF - OQPSK modems in the band - limited and non - linear channels, it has costant envelope, less spectral spreading, better BER performance and less interference of adjacent channels, etc. So, it is more suitable for the statellite data transmission channel.

关 键 词：FQPSK—KF 功率谱密度 包络特性 卫星数传信道 性能分析 

分 类 号：TN911[电子电信—通信与信息系统]