An algorithm for time delay estimation in asynchronous band-limited DS-CDMA systems is presented.
该文提出了适合于异步带限DS - CD MA系统的时延估计算法。
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。
It brings up a new DS-CDMA multiuser interference suppression receiver with a subspace tracking adaptive array.
提出了一种新的基于子空间跟踪的自适应阵ds - CD MA多用户干扰抑制接收机。
The paper deeply studies the procedure of WCDMA Downlink receiver and describes the fundamentals of DS-CDMA receiver.
该文深入地研究了WCDMA下行接收过程，阐述了直扩CDMA系统接收机原理。
In this paper, we propose a mathematical model to analyze call admission control schemes for a DS-CDMA cellular network.
提出了一种对DS -CD MA蜂窝网络的呼叫控制机制进行分析的数学模型。
This paper investigates blind multiuser detection for asynchronous DS-CDMA in frequency selective Rayleigh fading channel.
该文研究了频率选择性瑞利衰落信道中的异步ds - CD MA系统盲多用户检测。
Chip timing synchronization between local spread sequence and transmitted spread sequence is critical. in DS-CDMA receiver.
在DS - CD MA接收机中，正确解调的首要条件是实现本地扩频码与发送扩频码的码片同步。
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。
For group multiuser detection of DS-CDMA, the whole interferers were composed of the users in local cell and those in neighbor cells.
直接序列码分多址分组多用户检测中，干扰用户包括小区分组外用户及相邻小区用户。
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。
The estimation scheme for DS-CDMA systems includes a computationally efficient and easily implemented pilot filter on CDMA forward channel.
提出了一种面向直接序列扩频（DS-CDMA）通信系统的基于导频信号的自适应信道估计方法。
Moreover, FDE has been adopted as a key technique for both DS-CDMA and multi-carrier (MC -) CDMA to overcome the channel frequency-selectivity.
频域均衡作为关键技术不仅运用于DS - CDMA系统，而且也运用于多载波cdma (MC - CDMA)系统中来克服信道的频率选择性。
The feasibility criterion of power control in interference-limited direct sequence code division multiple access (DS-CDMA) systems is investigated.
研究了直接扩频码分多址(DS - CDMA)干扰受限系统的功率分配的可行性问题。
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。
In order to generate the optimal spreading sequences for asynchronous DS-CDMA, some optimizing criteria for selecting chaotic binary sequence were proposed.
为了获得异步ds - CD MA系统的最优扩谱序列，给出了一套用来选取混沌二值序列的优化准则。
Simulation results show that our algorithm is flexible and efficient for mobile multimedia DS-CDMA systems, and the improvement of performance is significant.
仿真结果表明，该策略与传统方式相比能够更灵活有效的配置无线多媒体DS CDMA系统中的无线资源，其性能提高是显著的。
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。
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。
At the same time, it is demonstrated that many MUD algorithms developed primarily for DS-CDMA systems can be user essentially without any change in the TH-IR systems.
同时也证明了许多适用于DS - CD MA系统中的多用户检测算法，可以本质上几乎不加任何修改的适用于TH - IR系统中。
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。
There is every indication that Direct-Sequence Code Division Multiple Access (DS-CDMA) will be one of the multiple access schemes for the third generation wireless mobile systems.
对于第三代无线移动通信系统，直接序列码分多址将是一种主要的接入技术。
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。
RBF neural network method using OLS algorithm for Multi-user Detection in DS-CDMA Systems is pro-posed, and the theoretic basis and simulation analysis capability are given int his paper.
分析了采用正交最小二乘(ols)算法的RBF神经网络应用于DS - CD MA扩频通信的多用户检测的问题，给出了基于RBF网络进行多用户检测的理论依据和仿真分析性能。
This thesis places emphasis on one of the key techniques of smart antenna - adaptive digital beam forming (DBF) algorithm and its applications in the DS-CDMA mobile telecommunications systems.
本文重点研究智能天线系统的关键技术之一——自适应数字波束形成(DBF)算法在DS - CD MA移动通信系统中的应用。
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。
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。
Algorithms based on DMMSE (Difference minimum mean square error) criterion of adaptive multi users detector for short spreading sequences DS CDMA systems is proposed.
给出了基于差分最小均方误差(DMMSE)准则的短扩频序列ds - CD MA自适应多用户检测算法。
Algorithms based on DMMSE (Difference minimum mean square error) criterion of adaptive multi users detector for short spreading sequences DS CDMA systems is proposed.
给出了基于差分最小均方误差(DMMSE)准则的短扩频序列ds - CD MA自适应多用户检测算法。
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