计算机工程 ›› 2009, Vol. 35 ›› Issue (23): 102-104,.doi: 10.3969/j.issn.1000-3428.2009.23.035

• 网络与通信 • 上一篇    下一篇

TD-SCDMA中的扰码性能分析及分配算法

庞国莉,高焕芝,刘庆杰,王小英   

  1. (防灾科技学院灾害信息工程系,三河 065201)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-12-05 发布日期:2009-12-05

Performance Analysis and Distribution Algorithm of Scrambling Code in TD-SCDMA

PANG Guo-li, GAO Huan-zhi, LIU Qing-jie, WANG Xiao-ying   

  1. (Department of Disaster Information Engineering, Institute of Disaster Prevention Science and Technology, Sanhe 065201)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-05 Published:2009-12-05

摘要: 针对TD-SCDMA扰码规划时由于码的相关性引入的小区间干扰问题,分析TD-SCDMA中扰码和信道化码组成的复合码的自相关、互相关性能,按相关性关系把扰码分成不同的集合。探讨了扰码对广播信道的影响以及扰码的位移重合性对系统性能的影响。提出一种尽量避免冲突的扰码分配算法,从而能为小区分配合适的扰码,改善系统性能。

关键词: 扰码, 复合码, 相关性

Abstract: For the interference problem in sectors of scrambling code planning in TD-SCDMA due to the correlation of code, this paper analyzes the performance of the self-correlation and cross-correlation for composite code consisting of scrambling code and channelization code in TD-SCDMA. And the scrambling code is divided into different sets according to the correlation. The effect of the scrambling code to broadcasting channel and the shift of the scrambling code to the system performance is analyzed. And an assignment algorithm for scrambling code with collision avoid is proposed, which can assign proper scrambling code for sector and improve the system performance.

Key words: scrambling code, composite code, correlation

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