DS-CDMA

作品数：286被引量：316H指数：7
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Space-time Coding Combined with Downlink Beamforming and Power Control for DS-CDMA Systems with Two Array Antennas
《Chinese Journal of Electronics》2006年第3期539-544,共6页SUN Xiaoying WANG Shuxun 
This work is supported by the National Natural Science Foundations of China （No.60272065）.
In frequency selective fading channel, even though joint space-time coding and Rake receiver scheme is used, only depending on temporal correlation, the Multiple access interference （MAI） introduced by multipath eff...
关键词：Space-time coding Transmit diversity Downlink beamforming Power control. 
MMSE Multiuser Detector Alleviating Edge Effect in Asynchronous DS-CDMA Systems
《Chinese Journal of Electronics》2005年第3期503-508,共6页WANGLing JIAOLicheng TAOHaihong LIUFang 
Multiuser detection is a key technique in DS-CDMA systems. At the base station, the received signal is the compositive signal transmitted by active users in the system over asynchronous channels, the Multiple access i...
关键词：MMSE 电子数据采集设备 数据处理 DS-CDMA MMSEAEE MAI 移动通信 
Turbo Interference Cancellation／Decoding for Convolutionally Coded Multi-Carrier DS-CDMA
《Chinese Journal of Electronics》2005年第2期309-313,共5页GANLiangcai XUGuoxing HUANGTianxi 
In this paper, by applying Turbo principle to convolutionally coded multi-carrier Direct-sequence Code-division multiple access (DS-CDMA), we propose Turbo Parallel interference cancellation integrating Frequency dive...
关键词：多载波 DS-CDMA 频率分集 BCJR TURBO码 干涉取消 
Turbo Interference Cancellation／Decoding with Blind Subspace Iterative Channel Estimation for Coded Multi-Carrier DS-CDMA
《Chinese Journal of Electronics》2005年第2期314-318,共5页XUGuoxing GANLiangcai ZHANGXuliang HUANGTiaxi 
In this paper, we consider subspace based channel estimation methods for Turbo parallel interference cancellation and decoding integrating frequency diversity combining (Turbo FDC-PIC/decoding) over convolutionally co...
关键词：多载波 DS—CDMA TURBO码 子空间 盲信道 
Adaptive Wavelet Neural Networks for Signal Detection in DS-CDMA System
《Chinese Journal of Electronics》2004年第3期512-517,共6页WANGLing JIAOLichengt TAOHaihong LIUFang 
The Multiple access interference (MAI) is the major factor that limits the performance and capacity of a nonorthogonal Direct sequence Code division multiple access (DS-CDMA) system. By using the adaptability of highl...
关键词：DS-CDMA 神经网络 信号检测 自适应小波变换 多路存取干涉 
Performance Analysis of Slotted Random Access DS-CDMA Systems with Multipacket Reception
《Chinese Journal of Electronics》2004年第3期449-452,共4页ZHANGJidong XULi ZHENGBaoyu XIAOHaiyong 
Multiple packets reception (MPR) is a new method to improve the network performance. If a node in the network has the capability of MPR, the node can receive multiple packets simultaneously, not to discard all the pac...
关键词：DS-CDMA 多包接收 多路存取 吞吐量 匹配滤波 
Analysis of OVSF Spreading Sequences for DS—CDMA System with Multipath Fading
《Chinese Journal of Electronics》2003年第3期419-422,共4页XIEJunsong HAOLi FANPingzhi NaokiSuehiro 
Based on the correlation property analysis of spreading sequences with unequal length, the perfor-mance of DS-CDMA (Direct sequence code-division multi-ple access) system employing OVSF sequences is presented.Analytic...
关键词：直序列码分多址 DS-CDMA 正交序列 多址接入 
On the Performance of Synchronous DS—CDMA Systems with Generalized Orthogonal Spreading Codes
《Chinese Journal of Electronics》2003年第2期219-224,共6页HAOLi FANPingzhi 
A new synchronous DS-CDMA system em-ploying generalized orthogonal (GO) spreading codes and maximum ratio combining (MRC) scheme is presented in this paper. In particular, the forward link of the system is discussed i...
关键词：DS-CDMA 直序列码分多址 同步 多路径传播 相关函数 
Iterative Multiuser Receiver for Convolutionally Coded DS—CDMA Systems
《Chinese Journal of Electronics》2003年第1期39-42,共4页ZHANGAiping LUOHanwen WANGHaoxing 
In this paper,an iterative multiuser receiver for convolutionally coded direct sequence-code division multiple access(DS-CDMA)system is proposed.The proposed receiver consists of a soft-in/soft-out(SISO)decision-feedb...
关键词：直序列码分多址 多用户检测 SISO信号 循环处理 DS-CDMA 
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