The paper focuses on the handoff of CDMA systems.
本文重点研究了CDMA系统越区切换技术。
The design of multiple sequences is one of the key problems in the satellite CDMA systems.
多址序列设计是卫星CD MA系统中的一个关键问题。
The chip level linear minimum mean square error (LMMSE) equalizer in CDMA systems is introduced.
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。
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 performance of downlink CDMA systems is influenced by channel fading and multi-access interference.
CD MA下行链路的性能受到信道衰落和多址干扰的影响。
In this paper, a low-complexity blind channel estimation technique is proposed for long-code MIMO CDMA systems.
该文提出一种用于多输入多输出CD MA系统的信道快速盲估计方法。
Multiple access interference (MAI) is a major factor which limits the capacity and the performance of CDMA systems.
在CD MA通信系统中，多址干扰是影响系统性能和系统容量的主要因素之一。
This paper introduces some schemes for optical CDMA systems employing coding spectrum of noncoherent broadband light.
介绍了对宽带光频谱进行编码的非相干光码分多址技术。
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。
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。
Use of zero correlation zone (ZCZ) sequences can avoid co-channel interference and multi-access interference in the quasi-synchronous CDMA systems.
在准同步cdMA系统中，使用零相关区(ZCZ)序列能够避免共信道冲突和多址干扰。
The results indicate that the atmospheric scintillation is an important factor for the bit error rate of two dimensional wireless optical CDMA systems.
结果表明，大气闪烁是影响二维无线光CDMA系统误码率性能的一个重要因素；
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。
Smart antenna using digital signal process technique, produces space directional beam, and utilizes space filter ability for improving the performance of CDMA systems.
智能天线利用数字信号处理技术，产生空间定向波束，利用其空间滤波特性可以提高CD MA系统的性能。
In this paper, we studied the spectral overlay of Infostations based on N-CDMA and WM-CDMA systems and analyzed the achievable capacity of I/WM-CDMA system in downlink.
对基于窄带码分多址（N-CDMA）方式的信息站系统与宽带多载波码分多址（WM-CDMA）系统的频谱叠加以及两个频谱重叠系统前向链路的容量进行了分析。
The work in this thesis is a part of the Nature Science Research Project of Anhui province "Research on blind adaptive multi-user detection in CDMA systems" (03042208) .
本论文结合安徽省自然科学基金项目“CDMA自适应盲多用户检测方法的研究”（03042208）。
The multiuser detection, power control and smart antenna technique can be used as power methods to suppress the interference, hence increasing the capacity of CDMA systems.
在CDMA系统中，引入多用户检测、功率控制和天线阵列波束形成技术，可以有效地抑制干扰，提高系统容量。
According to different channel models, CDMA systems can be divided into additive white gaussian noise (AWGN) channel and dispersive channel, time-variant and time-invariant channel.
CD MA系统按信道模型的不同分为高斯白噪声信道和衰落信道、时变和时不变信道。
Chapter 2 describes the characteristics of wireless channel, presents vector channel model for wideband CDMA systems, and emphasizes on the characteristics of indoor wireless channel.
第二章描述了无线信道的特点，给出了宽带CD MA系统的矢量信道模型，并着重分析了室内无线信道的特征。
A method of load estimation for multi service CDMA systems is proposed in this paper. With this method, uplink and downlink loads are estimated, and load thresholds are then determined.
提出了多业务CD MA系统的一种负荷估计方法，按照该方法对系统上、下行链路的负荷分别进行估计，并确定相应的负荷门限。
This paper introduces cause of formation of MAI in CDMA systems, and points out that Multi-user Detection (MUD) technology can improve capability and performance of CDMA through suppressing MAI.
本文介绍了多址干扰在CDMA系统中的成因，并提出通过多用户检测技术可抑制多址干扰(MAI)，从而提高CD MA系统的容量和性能。
An adaptive congestion control algorithm in code division multiple access (CDMA) systems from the aspect of reducing cost is proposed.
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。
A near maximum-likelihood (ML) multiuser detection algorithm based on unconstrained optimization approach is proposed for code-division multiple access (CDMA) systems.
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。
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。
The joint power and data rate allocation in code division multiple access(CDMA) systems was studied.
研究了码分多址（CDMA）系统中下行联合功率速率分配问题。
A multiple access interference (MAI) cancellation algorithm employing Gram-Schmidt algorithm for code division multiple access (CDMA) systems is presented.
提出了码分多址(CDMA)系统中一种基于克莱姆·施密特正交化法则的多址干扰抑制算法。
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.
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。
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