一种编码连续相位调制的跳频系统设计及其性能仿真分析  

Design of Frequency Hopping System with Encoded CPM Signals and It's Performance Simulation and Analysis

作　　者：罗爱国[1,2] 贾哲[1] 王庭昌[1] 

机构地区：[1]解放军理工大学通信工程学院,南京210007 [2]清华大学信息科学技术国家实验室,北京100084

出　　处：《系统仿真学报》2009年第4期1155-1158,共4页Journal of System Simulation

基　　金：国家自然科学基金(90204001)

摘　　要：针对编码CPM信号在跳频通信中的应用,提出了一种跳间RS编码、跳内SCCPM的跳频系统设计。接收端CPM信号采用PSP进行载波相位同步,实现了跳频系统中的SCCPM信号的相干序列迭代检测,获得了类似Turbo码迭代译码的性能。计算机仿真表明,该跳频系统在低信噪比下具优越的性能,具有很强的对抗部分频带干扰的能力,而且可以通过灵活的改变RS码的信息位长度,实现抗干扰能力和传输效率的折中。A frequency hopping system with inter-hop RS code and intra-hop SCCPM was designed, which was an application of CPM signals in frequency hopping communication systems. At the receiver end, PSP method was used to track and synchronize the carrier phase of the CPM signals, which enabled implement coherent sequence iterative detection for SCCPM signals in frequency hopping systems and achieved performance like Turbo iterative decoding. Computer simulation shows that the proposed system has superior performance in low SNR, and has a strong anti-jamming ability in PBNJ. Through changing the number of information bits in RS code, the system can achieve a tradeoff between the ability of PBNJ anti-jamming and transmitting efficiency.

关 键 词：CPM(连续相位调制) SCCPM(串行级联连续相位调制) 跳频系统 PSP(每幸存路径处理) 迭代检测 

分 类 号：TN914[电子电信—通信与信息系统]