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。
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 shire 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.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第23期102-104,108,共4页
Computer Engineering
关键词
扰码
复合码
相关性
scrambling code
composite code
correlation
