Adaptive Duplicated Filters and Interference Canceller for DS-CDMA Systems

被引：0
作者：
François Nougarou
Daniel Massicotte
Messaoud Ahmed-Ouameur
机构：
[1] Université du Québec à Trois-Rivières,Laboratory of Signals and Systems Integration (LSSI, www.uqtr.ca/Issi), Department of Electrical and Computer Engineering
来源：
Journal of Signal Processing Systems | 2008年 / 53卷
关键词：
Multiuser detection; Interference cancellation; Low complexity; WCDMA; FPGA implementation; VLSI architecture;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A low complexity multiuser detection (MUD) technique, the Adaptive Duplicated Filters and Interference Canceller (ADIC) (patent pending), is proposed in the DS-CDMA context. Of particular interest is the use of adaptive filters block (AFB) dedicated to each user with its respective input signals independent from other users’ contributions. The AFBs are mixed with interference canceller block in a cascade arrangement. As shown in this paper, this MUD can outperform the Decision Feedback Soft MultiStage Interference Canceller (DF-Soft-MPIC) MUD with complexity reduction by a factor of 4 to 8 for the data payload throughput from 64 kbps to 384 kbps, respectively. In addition to performance and algorithmic description of the proposed MUD method, a VLSI implementation strategy and hardware resources evaluation are investigated; permitting to estimate the maximum number of users in FPGA devices with respect to WCDMA constraints. The present work proposes a low complexity MUD wherein an interesting trade-off between performance and implementation complexity is described.
引用
收藏
页码：349 / 365
页数：16
相关论文
共 41 条
[11]  
Lee J. H.(1999)Adaptive multistage parallel interference cancellation for CDMA IEEE Journal on Selected Areas in Communications 17 1815-1827
[12]  
Buehrer M.(1999)A fast converging adaptive multiuser detection scheme with reduced complexity for CDMA Systems Asilomar Conference 1 649-653
[13]  
Woerner B. D.(2002)Expirements on pilot-assisted coherence multistage interference canceller for DSCDMA mobile radio IEEE Journal on Selected Areas in Communications 20 433-449
[14]  
Miller S. L.(2006)A low complexity and lower power SoC design architecture for adaptive MAI Suppression in CDMA systems Journal of VLSI Signal Processing 44 195-217
[15]  
Miller S. L.(2002)VLSI implementation of the multistage detector for next generation wideband CDMA receivers Journal of VLSI signal processing, Kluwer 30 21-33
[16]  
de Lamare R. C.(1999)A DSP-based DS-CDMA multiuser receiver employing partial parallel interference cancellation IEEE Journal on Selected Areas in Communications 17 613-630
[17]  
Diniz P. S. R.(2002)Real-time algorithms and architectures for multiuser channel estimation and detection in wireless base-station receivers IEEE Trans. on Wireless Comm. 1 468-479
[18]  
Xue G.(2007)Real-time DSP and FPGA implementation of wiener LMS based multipath channel estimation in 3G CDMA systems Journal of VLSI Signal Processing Systems 47 259-279
[19]  
Weng J.(1998)Set-membership filtering and a set-membership normalized LMS algorithm with an adaptive step size IEEE Signal Processing Letters 5 111-114
[20]  
Le-Ngoc T.(undefined)undefined undefined undefined undefined-undefined
12345