CDMA_SYSTEMS

作品数：40被引量：30H指数：3
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HYBRID ORTHOGONAL/RANDOM MULTIPLE ACCESS SCHEME WITH IMPROVED PERFORMANCE FOR DOWNLINK CDMA SYSTEMS
《Journal of Electronics(China)》2008年第1期47-52,共6页Zhou Gao Fan Pingzhi Hao Li 
Supported by the National Natural Science Foundation of China (No.60402017/90604035);the Sichuan Youth Science Foundation (No.05ZQ026-026).
In this paper, a hybrid orthogonal and random multiple access scheme with improved performance for capacity-enhanced downlink Code-Division Multiple-Access (CDMA) systems is presented, which is in fact a combination o...
关键词：Code-Division Multiple-Access （CDMA） Interleave-Division Multiple-Access （IDMA） Multi-User Detection （MUD） Hybrid multiple access 
A NOVEL CAPACITY ANALYZING METHOD FOR MULTIMEDIA CDMA SYSTEMS BASED ON POWER LEVEL ALLOCATION被引量：5
《Journal of Electronics(China)》2006年第6期842-847,共6页Pan Su Tung Sang Ng Feng Guangzeng 
Supported by the open research fund of the National Mobile Communications Key Lab of the Southeast Uni-versity and by the Hong Kong Research Council.
A novel method is proposed to analyze the capacity of future Code Division Multiple Access （CDMA） systems carrying multimedia services. The power level allocation is firstly investigated to meet each call＇s Bit Err...
关键词：Capacity MULTIMEDIA Code Division Multiple Access （CDMA） 
BLIND ADAPTIVE MULTIUSER DETECTOR FOR NONLINEARLY MODULATED SATELLITE MOBILE CDMA SYSTEMS被引量：2
《Journal of Electronics(China)》2006年第3期338-340,共3页Shao Shixiang Yang Longxiang Kyungsup Kwak 
Supported by the fund of NUPT 2001.
This paper presents a novel blind adaptive noncoherent decorrelative multiuser detector for nonlinearly modulated satellite mobile Code Division Multiple Access (CDMA) systems. By using the known signature waveforms o...
关键词：Mobile satellite communication Nonlinear Code Division Multiple Access （CDMA） system Noncoherent detection Multiuser detection 
HOT SPOT RELIEF WITH EMBEDDED BEAM FOR CDMA SYSTEMS IN HAPS被引量：1
《Journal of Electronics(China)》2006年第2期172-175,共4页Cheng Yuebo Jin Ronghong Jiang Ran Liu Bo 
This paper proposes a novel micro/macro beam coverage scheme used in High Altitude Platform System (HAPS) Code Division Multiple Access (CDMA) systems. A relief of traffic burden in hot spot areas is achieved by embed...
关键词：Multi-beam configuration High Altitude Platform System （HAPS） On-board antenna Hot spot Code Division Multiple Access （CDMA） 
A NOVEL ONE-SHOT DECORRELATOR IN CDMA SYSTEMS
《Journal of Electronics(China)》2002年第1期57-60,共4页Du Zheng Zhu Jinkang (PCN&SS Lab, University of Science and Technology of China, Hefei 230027) 
A novel one-shot decorrelator for asynchronous CDMA systems is developed. Corn-pared with existing one-shot decorrelator, it can reduce complexity and has better performance while eliminating all MAI. This decorrelato...
关键词：One-shot Decorrelator MAI DS-CDMA 
QUADRATIC PROGRAMMING NEURAL NETWORK BASED INTEGRATED SPACE-TIME INTERFERENCE SUPPRESSION IN CDMA SYSTEMS
《Journal of Electronics(China)》2001年第2期140-146,共7页Song Rongfang Bi Guangguo(Dept. of Radio Engineering, Southeast University, Nanjing 210096) (Dept. of Telecom. Eng., Nanjing Institute of Posts & Telecom., Nanjing 210003) 
Supported by the National Natural Science Foundation of China under Grant 69882004 and MPT Project
Quadratic programming models for integrated space-time interference suppression in CDMA systems are proposed in this paper. The models integrate the advantages of smart antenna and RAKE receiver, mitigate multiuser ac...
关键词：CDMA SPACE-TIME processing SMART ANTENNA Optimization NEURAL network 
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