MC-CDMA系统采用解相关-并行干扰抵消检测器的性能分析

栾英姿; 李建东; 杨家玮

MC-CDMA系统采用解相关-并行干扰抵消检测器的性能分析

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出版历程
- 收稿日期: 2002-08-14
- 修回日期: 2003-04-23
- 刊出日期: 2004-04-19

The Performance Analysis of DEC-PIC Detector Exploited in MC-CDMA System

摘要

摘要: 该文分析了MCCDMA系统采用解相关-并行干扰抵消(DECPIC)多用户检测器的性能,把它与Hara提出的最小均方误差合并(MMSEC)单用户检测器在上行和下行信道加以比较.仿真结果显示下行信道应用MMSEC单用户检测性能较好,且能抵抗信道估计错误。而上行信道多用户检测器的性能也较好,但是多用户检测器会受较大的信道估计错误影响而性能降低.
- MC-CDMA; 解相关-并行干扰抵消; 多用户检测; 最小均方误差合并; 单用户检测; 瑞利衰落信道
Abstract: This paper analyzes the performance of DEC- Parallel Interference Canceling(DEC-PIC) multiuser detector exploited in MC-CDMA system. It is compared with Haras Minimum Mean Square Error Combining(MMSEC) single-user detector in the uplink and downlink channels. The simulation results show that MMSEC single user de-tector is better in the downlink, and it can resist the channel estimation error. And in the uplink, the performance of the multiuser detector is better, but the large channel estimation error will bring performance degradation.

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Jean-Paul M. Linnartz G. Performance analysis of synchronous MC-CDMA in mobile Rayleigh channel with both delay and Doppler spreads. IEEE Trans. on Veh. Tech., 2001, 50(6): 1375-1387.[2]蒋昆,陈中文,张力军.MC-CDMA信道均衡技术性能分析.南京邮电学院学报(自然科学版),2001,21(1):1-9.[3]Shi Qinghua, Latva-aho Matti. An exact error floor for downlink MC-CDMA in correlated Rayleigh fading channels[J].IEEE Comm. Letters.2002, 6(5):196-198[4]Hara S, Prasad R. Overview of multicarrier CDMA. IEEE Comm. Mag., 1997(12): 126-133.[5]Hara S, Prasad R. Design and performance of multicarrier CDMA system in frequency-selective Rayleigh fading channels[J].IEEE Trans. on Veh. Tech.1999, 48(5):1584-1595[6]Verdu S. Minimum probability of error for asynchronous Gaussian multiple-access channels. IEEE Trans. on Info. Theory, 1986, IT-32(1): 85-96.[7]Moshavi S. Multi-user detection for DS-CDMA communications. IEEE Comm. Mag., 1996(10):124-136.[8]Bader F, Zazo S, Raos I. Improvement on the multi-user detection decorrelator of a MC-CDMA used in the reverse link. The 13th IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications, Lisbon, Portugal(PIMRC2002), 15-18th Sep., 2002, vol.1: 409-413.[9]Mashury S, Zoubir A, Zoubir A M. Adaptive implementations of two blind channel estimation algorithms on mc-cdma. The 8th International Conference on Communication Systems(ICCS2002), Singapore, 25-28th Nov., 2002, vol.1: 289-293.[10]Li Junqiang, Letaief K B, Cao Zhigang. A group oriented soft iterative multiuser detection for coded multi-carrier CDMA systems. ICC2002, New York city, April 28-May 2, 2002, vol.1:293-297.[11]Kafle P L, Sesay A B. Iterative semi-blind multiuser detection for turbo-coded MC-CDMA system with space-time transmit diversity. MILCOM 2002, Oct.7-10, 2002, California, vol.2: 1039-1043.[12]Y-S Choi, Voltz P J, Cassara F A. On channel estimation and detection for multicarrier signals in fast and selective Rayleigh fading channels. IEEE Trans. on Comm., 2001, COM-49(8):1375-1387.[13]Y(G) Li, Cimini L J, Sollenberger N R. Robust channel estimation for OFDM systems with rapid dispersive fading channels. IEEE Trans. on Comm., 1998, COM-46(7): 902-915.[14]O Edfors, M Sandell, Jan-Jaap van de Beek, et al.. OFDM channel estimation by singular value decomposition. IEEE Trans. on Comm., 1998, COM-46(7): 931-939.

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