1) 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。
2) direct sequence ultra wide bandwidth
直接序列超宽带(DS-UWB)
3) DS ultra-wide band
直接序列扩频-超宽带
5) direct sequence
直接序列
1.
Analysis of the simulation of direct sequence spread spectrum communication system;
直接序列扩频通信系统误码率的仿真分析
2.
The difference between UWB and the traditional direct sequence spread spectrum technology was analyzed,and the simulation models of TH-IR and DS-IR systems were installed.
首先分析了超宽带技术与传统的直接序列扩频技术的区别,然后建立了TH-IR和DS-IR超宽带系统的仿真模型,得到两种IR系统在多种干扰条件下的误码率性能。
3.
This paper demonstrates major performances and direction for use of all digital direct sequence spread spectrum STEL-2000A chip.
介绍了全数字式直接序列扩频芯片STEL2000A的主要性能和用法,并以STEL2000A芯片为核心,辅以A/D、D/A、智能控制器等若干外围器件,构成了一个适合野战环境的扩频收发系统实例,包括系统参数选择、硬件设计和软件设计3部分,硬件部分着重STEL2000A的接口设计,软件部分着重STEL2000A内部编程,最后给出了系统调试结果。
6) direct-sequence
直接序列
1.
To discuss properties of the direct-sequence spread-spectrum communication system resisting interference from other spread-spectrum signals.
取消待接收的直接序列扩频信号与其他直接序列扩频干扰信号码元宽度相等的限制来讨论直接序列扩频通信系统抗其他扩频信号干扰的性能。
2.
In this paper,we analyse influence of various interferences on a system-model of direct-sequence spread-spectrum receiver, calculate processing gain of the system and correct theoretical mistake in some books.
分析了各种型式的干扰对于直接序列扩频接收机模型这一系统的影响。
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