摘要
被动时反镜(PTRM)技术具有时间压缩性能,在水下通信中,PTRM技术能实现多径信号的重组,既实现了多径信号能量的聚焦,又抑制了码间干扰。将PTRM技术应用于多径扩展严重的浅水水声通信系统中,在对声信道没有任何先验知识的情况下与声信道自动匹配,实现自适应聚焦。仿真结果表明:PTRM可以良好地重组多径扩展,拟制码间干扰,减小误码率,提高通信质量。
PTRM（Passive Time Reversal Mirror） possesses the time compression performance, in underwater acoustic communication, multipath signal can be rebuilded by PTRM, so, not only multipath energy can be focused, but also ISI（InterSymbol Interference） can be reduced. PTRM is applied in the shallow water acoustic communication system where muhipath is serious, which could match the acoustic channel automatically and realize the adaptive focusing. The simulation result indicates that PTRM could rebuild multipath components, restrain ISI, reduce BER, and increase the quality of communication.
出处
《电声技术》
2010年第4期63-66,共4页
Audio Engineering
