Novel multiuser interference canceling scheme in TDD-CDMA systems

被引：0
|
作者：
Wang, Jibing [1 ]
Zhao, Ming [1 ]
Zhou, Shidong [1 ]
Yao, Yan [1 ]
机构：
[1] Tsinghua Univ, Beijing, China
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2000年 / 28卷 / 07期
关键词：
Code division multiple access - Interference suppression - Numerical methods - Signal to noise ratio;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Conventional multiuser interference canceling is always done in the uplink. A novel multiuser processing scheme for the downlink of TDD-CDMA (time division duplex-code division multiple access) systems was proposed. The downlink multipath channel parameter can be estimated from the uplink. The instantaneous channel parameter is used to calculate the spreading and despreading codes for different users. The optimal criterion of the generation of these codes was presented, so that the multiple access interference can be greatly reduced. Numerical results show that the scheme can increase the signal to noise ratio as compared with conventional CDMA systems which use Gold sequence as spreading code.
引用
收藏
页码：1 / 3
相关论文
共 50 条
  • [31] Investigation on adjacent cell interference cancellation in forward link of TDD-CDMA system
    Yan, Fa-Jun
    Sun, Guang-Yong
    Wang, Wen-Bo
    Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications, 2006, 29 (02): : 78 - 80
  • [32] Soft Bayesian recursive interference cancellation and turbo decoding for TDD-CDMA receivers
    Cusani, R
    Crea, D
    IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2001, 19 (09) : 1804 - 1809
  • [33] Perturbation methods for canceling interference in CDMA systems
    Lu, CC
    2002 4TH INTERNATIONAL WORKSHOP ON MOBILE AND WIRELESS COMMUNICATION NETWORK, 2002, : 602 - 605
  • [34] Perturbation methods for canceling interference in CDMA systems
    Lu, CC
    ICECS 2001: 8TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS I-III, CONFERENCE PROCEEDINGS, 2001, : 1143 - 1146
  • [35] An efficient dynamic channel allocation for asymmetrical traffic in TDD-CDMA systems
    Zheng, Zhihua
    2008 PROCEEDINGS OF INFORMATION TECHNOLOGY AND ENVIRONMENTAL SYSTEM SCIENCES: ITESS 2008, VOL 2, 2008, : 766 - 770
  • [36] A TDD-CDMA MAC protocol for multimedia traffic
    Mei, JX
    Chung, KS
    2002 IEEE REGION 10 CONFERENCE ON COMPUTERS, COMMUNICATIONS, CONTROL AND POWER ENGINEERING, VOLS I-III, PROCEEDINGS, 2002, : 732 - 735
  • [37] Investigation of uplink performances based on switched beam antenna in TDD-CDMA systems
    College of Telecom Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
    Dianzi Yu Xinxi Xuebao, 2006, 7 (1228-1232):
  • [38] Capacity evaluation of cellular TDD-CDMA systems deploying multi-frequency
    Shuplng, Chen
    Huibin, Lin
    Xin, Wu
    Dong, Zliao
    Mugen, Peng
    Wenbo, Wang
    IEEE 2007 INTERNATIONAL SYMPOSIUM ON MICROWAVE, ANTENNA, PROPAGATION AND EMC TECHNOLOGIES FOR WIRELESS COMMUNICATIONS, VOLS I AND II, 2007, : 119 - +
  • [39] Investigation of uplink capacity based on the background noise floor in TDD-CDMA systems
    Peng, MG
    Hu, W
    Wang, WB
    2004 7TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS, VOLS 1-3, 2004, : 1918 - 1921
  • [40] An analysis of resource allocation and management in TDD-CDMA systems employing smart antennas
    Peng, MG
    Wang, WB
    PROCEEDINGS OF THE IEEE 6TH CIRCUITS AND SYSTEMS SYMPOSIUM ON EMERGING TECHNOLOGIES: FRONTIERS OF MOBILE AND WIRELESS COMMUNICATION, VOLS 1 AND 2, 2004, : 753 - 756
12345