1) DS ultra-wide band
直接序列扩频-超宽带
2) DS-UWB
直接序列超宽带
1.
By studying the signal model of DS-UWB Rake receiver,the impact of multipath interference to the receiver performance was considered and a semi-analytical method was proposed for receiver performance analysis in the dense multipath channel.
在密集多径信道中,通过研究直接序列超宽带(DS-UWB)的Rake接收机信号模型,分析了多径干扰给接收机性能带来的影响,提出了一种分析接收机性能的半解析方法。
2.
The model of DS-UWB systems was introduced,and the channel model of indoor DS-UWB was studied and simulated.
文章首先介绍了直接序列超宽带(DS-UWB)系统模型,以及IEEE802。
3) direct sequence ultra wide bandwidth
直接序列超宽带(DS-UWB)
4) DSSS
直接序列扩频
1.
System of Coal Mine Communication Based on DSSS;
基于直接序列扩频技术的矿井通信系统
2.
Design of a multiplexing DSSS modulator based on software radio;
基于软件无线电的多通道直接序列扩频调制器的设计
3.
PLC based on DSSS and application;
基于直接序列扩频的电力线通信及其应用
5) direct sequence spread spectrum(DSSS)
直接序列扩频
1.
A linear frequency modulation(LFM) interference suppression method in direct sequence spread spectrum(DSSS) receiver based on Radon-STFT is proposed.
提出了一种基于R adon-短时傅里叶变换(R adon-STFT)的直接序列扩频(DSSS)系统线性调频干扰的抑制方法。
6) direct sequence spread spectrum
直接序列扩频
1.
Design of direct sequence spread spectrum communication system on Z87200 chip;
基于Z87200的直接序列扩频收发系统设计
2.
A novel direct sequence spread spectrum matched filter based on four-terminal device;
用四端子器件实现的一种新型直接序列扩频匹配滤波器
3.
A Power Reading System Based on Direct Sequence Spread Spectrum Communication Technology Via Power Line;
采用直接序列扩频通信技术的电力线载波集中抄表系统
补充资料：宽带和窄带业务
宽带业务是相对窄带业务而言的，一般来说，对于速率低于2Mb/s的通信业务统称窄带业务，如电话网、N-ISDN所提供的业务。对于高于2Mb/s的通信业务，如帧中继业务、视频点播、ATM业务、TV会议等称为宽带通信业务。 目前投入应用的宽带接入技术主要有两种：ADSL和FTTX＋LAN。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条