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 (3): 53-57.

• 论文 • 上一篇    下一篇

CDMA2000反向链路正交系统性能研究

张 欣, 窦中兆, 蔡启明, 杨大成   

  1. 北京邮电大学 电信工程学院, 北京 100876
  • 收稿日期:2003-07-03 出版日期:2004-03-28
  • 作者简介: 张 欣(1975—), 男, 博士生. E-mail: zhangxin@bupt.edu.cn
    杨大成(1951—), 男, 教授, 博士生导师. E-mail:yangdc@bupt.edu.cn

Study on System Performance of Reverse Link \=Orthogonality in CDMA2000

ZHANG Xin, DOU Zhong-zhao, CAI Qi-ming, YANG Da-cheng   

  1. Telecommunication Engineering School, Beijing University of Posts andTelecommunications, Beijing 100876, China
  • Received:2003-07-03 Online:2004-03-28

摘要: 基于现有CDMA2000信道结构,研究了反向链路正交方案,并利用rise-over-thermal(ROT)准则对该系统容量进行了分析。数值计算结果和动态系统级仿真表明,与非正交反向链路对比,采用反向链路正交降低了来自本小区的干扰,使系统容量有显著提高,但可用正交码资源限制了这种增益。

关键词: 码分多址, 反向链路正交, 正交因子

Abstract: An orthogonal reverse link (RL) method is studied based on the current CDMA2000 channel structure. The effect on RL system capacity is analyzed by use of rise-over-thermal (ROT) criterion. The numerical calculations and dynamic system level simulations show that the system capacity, comparing with non-orthogonal RL, is enlarged significantly by reduction of the intra-cell interference for orthogonal RL. On the other hand, the gain is limited by the orthogonal code resources in the system.

Key words: code division multiple access, reverse link orthogonality, orthogonal factor

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