北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2006, Vol. 29 ›› Issue (3): 118-121.doi: 10.13190/jbupt.200603.118.yangf

• 研究报告 • 上一篇    下一篇

LA码性质的几点讨论

杨 凡, 邹永忠, 李道本   

  1. 1. 北京邮电大学 信息工程学院, 北京 100876
  • 收稿日期:2005-06-15 修回日期:1900-01-01 出版日期:2006-06-30 发布日期:2006-06-30
  • 通讯作者: 杨凡

Discussions on property of LA code

YANG Fan, ZOU Yong-zhong, LI Dao-ben   

  1. School of Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2005-06-15 Revised:1900-01-01 Online:2006-06-30 Published:2006-06-30
  • Contact: YANG Fan

摘要:

讨论了LA码的3个参数之间的关系并分析了LA码自相关函数同其自身参数 之间的密切关系,推导并证明了LAS2000+系统中LA码自相关函数比较理想时 >98是必须满足的一个充分条件。这个充分条件对LA码的序列设计和采用LA码的系统帧结构的设计都有着重要的理论和实践意义。

关键词: LAS-CDMA;LA码, 自相关函数, 邻小区干扰

Abstract:

The relations among three parameters of LA code and the relations between the auto-correlation function and the parameter of the LA code are investigated. It is proven that >98 is a sufficiency condition when the auto-correlation function of the LA code in LAS2000+ system is on ideal state. This sufficiency condition is important for the design of LA code and the frame structure of the system in which LA code is used.

Key words: large area synchronous-code division multiple access, auto-correlation function, ajacent cell interference

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