MULTIUSER_DETECTION

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Efficient multiuser detector based on box-constrained deregularization and its FPGA design
《Journal of Systems Engineering and Electronics》2012年第2期179-187,共9页Zhi Quan Jie Liu 
supported by the National Council for Technological and Scientific Development of Brazil (RN82/2008)
Multiuser detection can be described as a quadratic optimization problem with binary constraint. Many techniques are available to find approximate solution to this problem. These tech- niques can be characterized in t...
关键词：multiuser detection dichotomous coordinate descent （DCD） box-constrained DCD deregularization Tikhonov regular- ization low complexity field-programmable gate array （FPGA）. 
Cochannel interference cancelation for multiple access systems
《Journal of Systems Engineering and Electronics》2007年第2期223-228,共6页Wang Xia Zhu Shihua Sun Delong 
the National Natural Science Foundation of China (60372055);National Doctoral Foundation of China (20030698027).
Many properties of frequency-hopped spread-spectrum multiple access （FH/SSMA）, such as, robustness against frequency selective fading and jamming make it a preferred multiple access communication scheme. But cochann...
关键词：Communication and informance systems Cochannel interference cancellation Multiuser detection  Frequency hopped. 
Successive quadratic programming multiuser detector
《Journal of Systems Engineering and Electronics》2007年第1期8-13,共6页Mu Xuewen Zhang Yaling Liu Sanyang 
Based on the semidefinite programming relaxation of the CDMA maximum likelihood multiuser detection problem, a detection strategy by the successive quadratic programming algorithm is presented. Coupled with the random...
关键词：Code division multiple access Multiuser detection Semidefinite programming Successive quadratic programming. 
New multitarget constant modulus array for CDMA systems
《Journal of Systems Engineering and Electronics》2006年第2期455-457,共3页Zhang Jidong Zheng Baoyu 
A new mulfitarget constant modulus array is proposed for CDMA systems based on least squares constant modulus algorithm. The new algorithm is called pre-despreading decision directed least squares constant modulus alg...
关键词：constant modulus algorithm adaptive array multiuser detection code division multiple. 
Novel space-time multiuser detection algorithm of WCDMA system
《Journal of Systems Engineering and Electronics》2005年第1期42-46,共5页ZhangXiaofei XuDazhuan YangBei 
ThisprojectwassupportedbytheNaturalScienceFoundationofJiangsuProvince(BK2003089)
The structure and performance of space-time multiuser detection receiver at base stations of WCDMA system is analyzed, in which smart antenna is employed. WCDMA uplink signal model is established in this paper. Space-...
关键词：WCDMA Multiuser detection Multiple access interference Bite error rate Space-time processing. 
New blind adaptive approach to multiuser detection in CDMA systems
《Journal of Systems Engineering and Electronics》2004年第2期131-134,146,共5页LüPingbao XieJianying 
Due to a number of advantages, blind adaptive multiuser detector has become a research hotspot in recent years. But low convergence rate problem occurs to many blind adaptive algorithms. A new blind adaptive approach ...
关键词：CDMA multiuser detector blind adaptive bit error rate convergence rate. 
Equivalent Time-Domain Representation and Uplink Channel Estimator for Multicarrier CDMA Systems
《Journal of Systems Engineering and Electronics》2003年第3期1-7,共7页吴晓军 殷勤业 曾明 
This project was supported by the National Natural Science Foundation of China (No. 69872029) ; the Research Fund for Doctoral Program of Higher Education of China (No. 1999069808).
Many blind channel estimation methods have been proposed for direct sequence (DS) code-division multiple access (CDMA) systems, so we can certainly use them to estimate the finite impulse response (FIR) channel for th...
关键词：Multicarrier code-division multiple access Channel impulse response Multiple access interference Intersym-bol interference Cyclic prefix Blind channel estimation Multiuser detection. 
Iterative Multiuser Receiver Based on Decorrelating Decision-Feedback Detection
《Journal of Systems Engineering and Electronics》2003年第1期86-91,共6页张爱萍 罗汉文 王好星 
Iterative multiuser receiver for joint multiuser detection and channel decoding improves the receiver' s performance by passing soft information between multiuser detection and channel decoding. In this paper, an iter...
关键词：Multiuser detection Parameter estimation Turbo principle. 
Equivalent Joint Space-Time Multiuser Detection for Uplink ISI-Corrupted Multicarrier CDMA Systems with Arbitrary Antenna Arrays
《Journal of Systems Engineering and Electronics》2002年第4期8-16,共9页Wu Xiaojun, Yin Qinye & Zeng Ming School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, P. R. China 
National Natural Science Foundation(69872029);Doctoral Program of Higher Education of China(1999069808).
The multicarrier code division multiple access (MC-CDMA) systems without cyclic prefix (CP) hold a fine spectral efficiency though they are unavoidably corrupted by the intersymbol interference (ISI) over the finite i...
关键词：Algorithms Antenna arrays Code division multiple access Computer simulation 
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