码分

基于稀疏阵列和码分信号的机载预警雷达STAP研究

Airborn Early Warning Radar STAP Based on Thinned Array and Code Division Signal

文中研究了卫星交换/码分多址（SS/CDMA）技术，重点放在码分交换（CDS）技术的基本原理、性能特点和技术关键。

This paper studies a satellite switched CDMA technique , with emphasis on the principles , characteristics and key issues of the code division switch technique .

本文提出了一种基于码分复用技术的四路E1数据扩频无线传输设备的实现方案。

This paper introduces a project based on code division multiplexed that is used to realize four El channels 's wireless transportation .

本文主要介绍结合码分复用（Code-DivisionMultiplexing）的OFDM系统，即OFDM-CDM系统在无线衰落信道中的传输。

In this paper , combining orthogonal frequency-division multiplexing with code-division multiplexing ( i.e. OFDM-CDM ) system in wireless fading channels is presented .

最后分析了普遍适用的二进制和ALOHA防碰撞算法，并再此基础上提出了一种基于CDMA技术的码分时隙ALOHA算法，提高了系统的吞吐量。

Finally Analysis a universal binary and ALOHA anti-collision algorithm , and then puts forward a new slotted ALOHA algorithm technique based on CDMA , improved system throughput .

针对传统航天测控通信系统在测距精度、数据传输速率和抗干扰等方面的不足，将多载波码分多路存取（MCCDMA）应用于航天测控通信系统。

On the basis of shortcoming of traditional spaceflight telemetry , tracking and command systems in measure accuracy , data speed and resist interfere , multi carrier code division multiple access ( MC CDMA ) technology is applied to spaceflight in this paper .

由于OFDM系统中的资源是时频二维的，因此设计针对该系统的调度与资源分配方案时，与一般的基于时分或码分复用的系统相比也有所不同。

Since resources in OFDM systems are two-dimensional time-frequency , so the design of scheduling and resource allocation scheme for this system is different from systems based on time-division or code-division multiplexing . Finally , wireless packet scheduling algorithm in the OFDM system is studied .

SS/CDMA系统能为多波束对地静止卫星的固定业务提供多址和交换功能，该系统上行接入采用CDMA，下行采用码分复用，星上交换采用码分交换，整个系统采取按需分配控制。

An SS / CDMA system can provide both multiple access and switching to a multibeam geostationary fixed satellite service . The uplink access method is based on CDMA , the downlink on code division multiplexing ( CDM ), and the onboard switching on code division switching ( CDS ) .

光码分复用（OCDM）是近年来受到极大关注的热点技术之一，它通过光编码和匹配光解码，实现光信道的复用、解复用。

Optical code division multiplexing ( OCDM ) is receiving more and more attention recently . Optical channel multiplexing and demultiplexing can be achieved through optical encode and matched optical decode .

光码分多址技术（OCDMA）将码分复用（CDMA）概念引入光纤通信中，该技术具有全光处理，异步接入、软容量，网络协议简单、保密性强等特点。

Optical code division multiple access ( OCDMA ), which introduces the concept of code division multiple access ( CDMA ) into optical fiber communication , provides the attractive features such as all optical process , asynchronous access , the soft capacity , the simple network protocol and high confidentiality .

光码分复用中的编/解码技术

The Technology Of Encoded - Decoded for Optical Code Division Multiple-Access and

光码分复用关键技术及可调谐光脉冲生成技术研究

Key Technology for Optical Code Division Multiple-Access and Tunable Optical Pulse Generation

一种码分、频分和时分雷达信号

A kind of code division , frequency division and time division radar signal

基于盲信道估计的联合检测码分时分多址系统性能分析

Performance Analysis of JD CDMA / TDMA Systems Based on Blind Channel Estimation

全光码分复用通信研究

Research on All Optical Code Division Multiplexing Communication

双极性光码分复用系统的研究

Research on bipolar optical code-division multiple access system

码分复用数字音频水印嵌入方案

Digital Audio Watermarking Based on Code Division Multiplexing

适用于光码分复用通信的可调光正交码编/解码器的研究

The Research of Tunable Optical Orthogonal Encoder / Decoder for Optical Code Division Multiplexing Communication

数字码分多路复用遥测系统的研究

On Digital Code Division Multiplex Telemetry System

红外多路遥控系统可实现16路的红外开关控制。以码分制多通道红外遥控为设计的基本思路。

The infrared multichannel system of remote control can realize the infrared switch control of16 roads .

采用码分复用与波分复用相结合的技术可以构成基于波长和码字转换的多跳光网络。

OCDM / WDM multi-hop networks can be realized by applying OCDM into WDM multi-hop optical networks .

光码分复用/波分复用多跳网的地址码转换方案及误码率性能

A New Scheme of Address Code Conversion and Its BER Analysis for OCDM / WDM Multi-Hop Networks

空时码分为空时格码和空时块码，然后就其性能准则和译码准则进行论述；

Emphasis of discussion is paid on one kind of Space-Time Block Code , namely Unitary Space-Time Code .

我们将修辞中使用的语码分为一价译元和二价译元。

We divided the codes used in figures of speech into univalent translation constituents and bivalent translation constituents .

本文从相对电平的观点出发，提出了一种沃尔什码分多路信号多电平压缩的新方法。

From the point of view of relative level , this paper proposes a novel approach for the multilevel compression in walsh code-division multiplexing digital communication .

光码分复用可大大提高光纤的利用率，降低网络成本，简化网络管理，具有较高的网络安全性，但目前存在一些尚待解决的问题。

OCDMA improves bandwidth utilization , reduces network costs , simplifies network management , and provides higher network security , but some problems have yet to be solved .

近几年来，随着时分复用、频分复用、码分复用技术的不断发展，信道容量的增加已经非常的困难，此时智能天线凭借其特有的空间滤波的特性，引入了空分复用的概念。

In recent years , with time division multiplexing , frequency division multiplexing , code division multiplexing continue to develop , the increase in channel capacity is already very difficult .

对实现全光码分复用通信的原理、系统构成进行了研究，并通过计算机编程模拟了光码分复用通信的相关接收过程。

The principle and the system construction for realization of all optical code division multiplexing communication are investigated . The correlation receiving process of optical code division multiplexing communication is simulated with computer programming .

短波通信主要采用扩频系统，它有如下的优点：抗干扰、抗噪音、抗多径衰落、具有保密性和功率谱密度低，可码分复用等。

HF employs Spread Spectrum , it has many advantages that include resistance to jamming and noise , tolerance of multipath effects , security and low spectral density , code division multiplexing , and so on .

然后分析了无线数据平台使用的技术：直接序列扩频、全双工、时分复用多址、码分复用多址、差错控制、移动性管理、数据通信协议；

Then the key technologies of air interface are put forward , including the direct sequence spread spectrum , full-duplex , time-division multiple access , code-division multiple access , error control , mobility management and data communication protocol .