The multi-user detection is a key technique to solve the problem of MAI existing in DS-CDMA system.
多用户检测技术是码分多址系统中解决多址干扰的关键技术。
By unified signal model of antenna array Multicarrier DS-CDMA system, the subspace-based blind channel estimation is achieved.
通过在阵列天线多载波ds - CD MA系统下构造统一的信号模型，实现了基于子空间的信道盲估计。
This paper educed the necessity of multiuser detection by analysis the advantages and problems of the DS-CDMA system in existence.
本文从DS—CD MA的优势和存在的问题出发，引出了多用户检测的必要性。
It has been proved that iterative multiuser detection with decoding is a very effective way to increase system capacity in DS-CDMA systems.
在DS - CD ma系统中，联合译码的迭代多用户检测是克服多址干扰增加系统容量的有效方法。
A new combined scheme of array signals processing and partial Parallel Interference Canceller is proposed for the uplink receiving of DS-CDMA system.
提出一种新的用于DS - CD MA系统上行链路阵列接收加部分并行干扰消除的联合处理方案。
The multi-user detection algorithm based on the EM method is used to look for the maximum-likelihood estimation of users' data iteratively in a DS-CDMA system.
基于EM方法的多用户检测算法采用EM迭代方法来求解DS-CDMA系统中各用户发送数据的最大似然估计解。
Therefore, researching particle filtering techniques and its applications in the chaotic spread spectrum DS-CDMA system has great theoretical and practical significance.
因此，开展对粒子滤波技术及其在混沌扩频DS - CD MA通信系统中的应用的研究具有重要的理论与现实意义。
The capacity and performance of a DS-CDMA system is greatly limited by Multiple Access Interference (MAI) and therefore many multiuser detection algorithms have been proposed.
在直序扩频码分多址(DS - CDMA)系统中，多址干扰(MAI)极大地制约系统容量及性能。
In direct sequence code division multiple access (DS-CDMA) communications, blind signal detection and interference cancellation are the important methods to increase system capacities.
在直扩码分多址(DS - CDMA)通信中，盲信号检测及干扰抑制技术是增加系统容量的重要手段。
In DS - CDMA system, a number of users share a common frequency band.
在DS - CDMA系统中，许多用户占用同一个频带进行通信。
This paper presents an improved Gaussian approximation method for analyzing the MAI of DS CDMA system.
介绍了改进高斯近似法，分析了其在计算DSCDMA系统多址干扰中的应用。
The system performance is evaluated in the presence of partial band interference, it is compared with that of a single-carrier DS CDMA system.
文中估计了存在部份带宽干扰下系统的性能，并与单载波直扩码分多址系统进行了比较。
The DS/CDMA digital mobile communication system is based on Spread-spectrum technique and CDMA technique.
扩频技术在码分多址通信中的应用产生了DS/CDMA数字蜂窝移动通信系统。
An SIR-based close loop power control algorithm is presented. The pilot symbols of control channel in DS-CDMA up-link system are used to measure the received SIR.
针对采用专用控制信道的DS - CD MA系统的上行链路，本文直接利用控制信道的导频符号进行SIR测量的闭环功率控制，并通过计算机仿真对链路的性能进行分析。
Theory analysis and computer simulation results of throughput of S-ALOHA-DS/CDMA are obtained using different error correcting code. And comparison results with MC-S-ALOHA system are also obtained.
结果表明，在总负载较大时，采用高纠错能力的时隙ALOHA DS/CDMA系统可以在吞吐量上有更好的性能。
Theory analysis and computer simulation results of throughput of S-ALOHA-DS/CDMA are obtained using different error correcting code. And comparison results with MC-S-ALOHA system are also obtained.
结果表明，在总负载较大时，采用高纠错能力的时隙ALOHA DS/CDMA系统可以在吞吐量上有更好的性能。
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