narrow-band secure speech system是什么意思

用法例句

At the same time, owning to the extremely large frequency bandwidth, it is a potential interference to some narrowband systems.

采用超宽带(UWB)技术的无线通信系统,在实现对无线电频谱资源的充分利用的同时,也成为传统窄带系统的一种潜在干扰源。

Interference analysis of time-hopping ultra-wideband signal with pulse amplitude modulation on narrowband system;

PAM TH-UWB信号对窄带系统的干扰分析

Based on RS coding and transforming high-order waveform modulation,this paper proposed a solu- tion to make the best of channel bandwidth and signal power and reduce the receiver demand to the SNR,using this technique in the narrow band communication system,then analyzing the performance in matlab.

本文采用 RS 编译码+高阶波形编码调制解调的方法,设计有效利用信道带宽和信号功率而又提供有效降低接收信噪比的新型调制解调方案,并将其应用于窄带通信系统,通过 Matlab 仿真分析其性能。