多址干扰是影响码分多址系统性能的关键问题。
Multi-access interference is the key problem which restricts the performance of CDMA (code division multiple access) 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。
The multi-user detection is a key technique to solve the problem of MAI existing in DS-CDMA system.
总而言之，TDCS是一种具有频谱自适应能力的宽带码分多址系统。
In a word, TDCS is a spectrum agile and broadband Code Division Multiple Access (CDMA) technology.
针对光谱相位编码光码分多址系统（OCDMA）的信息侦听技术进行了研究。
The information eavesdropping techniques of spectral phase-coded OCDMA system were investigated.
多载波扩展频谱码分多址系统（MC／CDMA）是一种消除符号间干扰的有效技术。
MC/CDMA is one of the effective techniques to mitigate the ISI.
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 system performance is evaluated in the presence of partial band interference, it is compared with that of a single-carrier DS CDMA system.
码分多址系统中的多用户信号检测，能有效地减少多址干扰、增加系统的容量、改善远近效应。
Multiuser detection can efficiently reduce Multi-access Interference in CDMA system. At the same time, it can increase system capability and improve near-far effect.
本文对照频分多址和时分多址系统的频谱效率，阐述了码分多址系统提高系统容量的几项关键技术。
The author has described several key techniques for improving the capacity of CDMA digital celullar system, comparing to the spectral efficiency of FDMA and TDMA cellular system.
然而多址干扰并不是码分多址系统固有的问题，是由传统CDMA系统采用单用户接收方案所造成的。
MAI is not caused by CDMA system itself, but by the traditional single user receiver strategy used in CDMA system.
纠错编码技术可以提高光码分多址系统的频谱效率，并可以抑制频谱效率随码长的增加而减小的特性。
Error correction coding is used to increase the spectral efficiency, and it can avoid the spectral decrease with the increase of the length.
智能天线和干扰消除技术是从不同角度抑制码分多址系统多址干扰的方法，二者各有其特点及不足之处。
Smart antennas and interference cancellation are two different kinds of schemes to restrain multi-access interference, and each has its characteristic and defect.
仿真研究了传输信道和光功率对光码分多址系统性能的影响，分析了传输距离、光纤色散系数、光纤衰减、入纤光功率等与误码率和Q值的关系。
The influences of length, dispersion index and attenuation index of transmission fiber and incident optical power on ber (bit error rate) and Q value of the system is analyzed.
提出了一种宽线性动量LMS算法，分析了算法在均方意义下的收敛性，给出了算法稳定条件和失调公式，以及算法应用于码分多址系统多址干扰抵消的效果。
A widely linear momentum LMS algorithm for CDMA MAI suppression had been proposed. Its mean square convergence had been analyzed, and its stability region and misadjustment had been found out.
该文考虑空时分组码多载波码分多址（MC-CDMA）系统的盲干扰抑制。
This paper considers blind interference suppression for a space-time block coded MultiCarrier CDMA (MC-CDMA) system.
从降低开销的角度出发，提出了一种自适应的码分多址(CDMA)系统拥塞控制算法。
An adaptive congestion control algorithm in code division multiple access (CDMA) systems from the aspect of reducing cost is proposed.
文章应用码分多址的思想，提出一种具有自动波束选择的室内漫射红外通信系统方案。
Using the idea of CDMA, an automatic beam selection scheme for indoor diffuse wireless infrared communication systems is presented.
本文以IS- 95系统为例，分析了该系统在围绕提高容量方面所采用的几项关键技术，从中反映出了CD MA(码分多址)数字蜂窝系统的一些特点。
In this paper, we analyse some key technology for increasing the capacity in IS-95 CDMA sys-tem, which mirror some features of CDMA digital cellular systems.
所有这些参量对于在扩展频谱码分多址通信系统中，指导特征序列的选取有着极为重要的意义。
All of those are important for choice signature sequences in the spectrum code-division multiple-access communication systems.
对宽带码分多址(WCDMA)蜂窝移动通信系统中下行链路的正交可变扩频因子(OVSF)码字分配问题进行了建模分析。
The modeling and analysis of orthogonal variable spreading factor (OVSF) codes assignment in wideband code division multiple access (WCDMA) cellular communication systems are presented.
上述两个问题的存在，使得常规的匹配滤波器接收机受到很大限制，实际的码分多址通信系统的性能也因此受到严重制约。
The existence of these two problems makes the performance of the traditional Match Filter (MF) Receiver very bad, and so does the performance of the CDMA system.
传统的遥控遥测系统多运用码分多址技术，在某些信道环境下，它的传输速率有时达不到高速通信的要求。
The CDMA system was widely used in the traditional system, but its data rate is not fast enough to satisfy the system that needs in some channel environment.
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 direct sequence code division multiple access (DS-CDMA) communications, blind signal detection and interference cancellation are the important methods to increase system capacities.
本文主要研究了WCDMA(宽带码分多址)系统中频偏和最大多普勒频偏的估计方法。
The ways of estimating the frequency offset and Doppler spread width in WCDMA system are studied in this paper.
着重分析了在码分多址（CDMA）数字蜂窝移动通信系统中的三种用户检测技术。
This paper mainly analyzes three user detection approaches in digital cellular mobile communication systems based on CDMA.
利用码分多址(CDMA)系统中的用户伪随机(PN)码信息，提出了一种新的自适应智能天线结构。
A new receiver structure was proposed for adaptive smart antennas in CDMA mobile communication systems, requiring only the knowledge of the desired user's pseudo noise (PN) code sequence.
介绍了码分多址CD MA系统中码片级线性最小均方误差均衡器。
The chip level linear minimum mean square error (LMMSE) equalizer in CDMA systems is introduced.
针对码分多址(CDMA)系统提出了一种基于无约束最优化的近最大似然多用户检测算法。
A near maximum-likelihood (ML) multiuser detection algorithm based on unconstrained optimization approach is proposed for code-division multiple access (CDMA) systems.
提出了一种在码分多址(CDMA)系统中，基于多小区功率增长估计的下行接纳控制(AC)算法。
A downlink admission control (ac) algorithm is proposed in code division multiple access (CDMA) systems, that is based on multi-cell transmitted power raised estimation.
提出了一种在码分多址(CDMA)系统中，基于多小区功率增长估计的下行接纳控制(AC)算法。
A downlink admission control (ac) algorithm is proposed in code division multiple access (CDMA) systems, that is based on multi-cell transmitted power raised estimation.
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