一种基于协议的短波特定信号解调设计  

Design on HF Specific Signal Demodulation Based on Protocol

作　　者：陈丽[1] CHEN Li(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2019年第3期286-290,共5页Radio Communications Technology

基　　金：国家部委基金资助项目

摘　　要：为了提高在短波恶劣信道条件下的单载波串行信号接收性能,设计了针对协议信号特征的解调算法。对110A协议信号的波形进行了分析,根据该信号传输特点,采用判决反馈均衡器结构及递推最小二乘算法等方法实现了基于协议的时域均衡器设计,通过信号中的同步报头序列和探测序列对均衡器进行训练,使之能够快速地使均衡器进入收敛状态。通过对实际信号的采集与处理,验证了解调算法的正确性。In order to improve the single-carrier serial signal receiving performance under severe HF conditions,the demonstration algorithm is designed based on signal characteristics.The 110A protocol signal waveform is analyzed.Based on the transmission characteristics of this kind of signal,the time-domain equalizer based on protocol is designed by using decision feedback equalizer structure and RLS algorithm.The equalizer training is implemented with preamble and probe sequences to make quickly enter the convergence state.The results of actual signal collection and processing show that the demodulation algorithm is available.

关 键 词：短波单载波串行信号 110A 判决反馈均衡器 递推最小二乘算法 

分 类 号：TN911[电子电信—通信与信息系统]