ICS同频直放站回波干扰消除技术研究  

Research on Elimination Technology of Echo Interference in ICS Co-frequency Repeater

作　　者：蔡勇超 CAI Yongchao(Guangdong Cancel Foshan Power Supply Bureau of China Southern Power Grid,Foshan 528000,China)

机构地区：[1]南方电网广东佛山供电局,广东佛山528000

出　　处：《通信电源技术》2022年第14期111-114,共4页Telecom Power Technology

摘　　要：干扰抑制系统(Interference Cancel System,ICS)能够消除同频直放站输入信号和输出信号之间的干扰,避免直放站产生自激现象。对同频直放站的工作原理及干扰形成的原因进行了分析,研究自适应滤波技术原理及常用的自适应干扰消除算法,通过仿真结果对比分析各个算法的优缺点。研究回波信号延时估计和回波信道多径位置估计技术原理及其在消除回波干扰信号中起到的关键作用。The Interference Cancel System(ICS)can eliminate the interference between the input signal and the output signal of the same frequency repeater,and avoid the self-excitation phenomenon of the repeater.The working principle of the co-frequency repeater and the reasons for the formation of interference are analyzed,the principle of adaptive filtering technology and the commonly used adaptive interference elimination algorithms are studied,and the advantages and disadvantages of each algorithm are compared and analyzed through the simulation results.The principle of echo signal delay estimation and echo channel multipath position estimation technology and its key role in eliminating echo interference signal are studied.

关 键 词：干扰抑制系统(ICS) 同频直放站 回波干扰 自适应滤波 信号预处理 

分 类 号：TN92[电子电信—通信与信息系统]