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.
出处
《系统仿真学报》
CAS
CSCD
北大核心
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)
