北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2004, Vol. 27 ›› Issue (5): 75-79.

• 论文 • 上一篇    下一篇

TDD-CDMA系统上行链路接入控制算法研究

彭木根, 王文博   

  1. 北京邮电大学 电信工程学院, 北京 100876
  • 收稿日期:2003-11-13 出版日期:2004-05-28
  • 作者简介: 彭木根(1978—), 男, 博士生. E-mail: pmg@bupt.edu.cn;王文博(1965—), 男, 教授, 博士生导师. E-mail: wbwang@bupt.edu.cn
  • 基金资助:
    国家“863计划”项目(2004AA123160)

Investigation of Uplink Admission Control Schemes in Time Division Duplex-Code Division Multiple Access (TDD-CDMA) System

PENG Mu-gen, WANG Wen-bo   

  1. Telecommunication Engineering School, Beijing University of Posts andTelecommunications, Beijing 100876, China
  • Received:2003-11-13 Online:2004-05-28

摘要: 理论分析了采用多用户检测技术后时分双工-码分多址(TDD-CDMA)系统的上行链路接入控制机制,给出了新用户或修改用户接入系统时负载和接收功率增加的理论计算公式,提出了一种适合TDD-CDMA系统基于干扰预测的上行接入控制算法。仿真结果表明,该算法能显著提高系统性能,该接入控制算法的最佳门限值与MUD因子有关,当MUD因子大于0时,门限值要大于传统FDD系统所设置的9 dB。

关键词: 时分双工-码分多址系统, 干扰预测, 接入控制, 背景噪声增加因子

Abstract: An advanced uplink admission control mechanism is proposed for TDD-CDMA system, in which the multi-user detection (MUD) technique is adopted. By estimating the increasing interference and system load for new or modified users, the proposed admission control scheme rejects or accepts the user to access the system. With an OPNET-based dynamic system simulator, the performance of TDD-CDMA system is evaluated. The simulation results show that the proposed scheme can improve the system performance and the proper admission control threshold is changed with MUD factor.

Key words: time division duplex-code division multiple access;interference estimation, admission control, background noise rise

中图分类号: