TD-SCDMA系统基站间干扰消除方案  

Interference Cancellation Scheme of Inter-basestation in TD-SCDMA System

作　　者：曾云宝[1] 朱永芬[1] 王文博[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《无线电工程》2006年第1期25-26,29,共3页Radio Engineering

基　　金：国家"863计划"项目(2004AA123160)。

摘　　要：提出了一种当基站间时隙分配不同时,针对TD-SCDMA系统的基站间干扰消除方案。该方案首先根据基站时隙分配的先验信息和功率角度谱估计确定基站干扰源,然后采用零陷技术抑制基站间干扰。仿真表明,提出的基站干扰消除方案能够大大提高干扰消除效果,其性能远远优于多用户检测并行干扰消除方法,提高了频谱使用效率。This paper presents an interference cancellation scheme which is suitable for TD-SCDMA system when the timeslot allocation is different. Based on the priori information of timeslot allocation between the basestadons and the estimation of the power of angle spectrum, null steering technique is utilized to cancel interferece of intra-basestafion. Simulation results have shown that the performance of the proposed scheme is gready improved compared with the parallel interference cancellation algorithm of multi-user detection, and it increases the spectrum efficiency.

关 键 词：CDMA 同信道干扰 TD—SCDMA 智能天线 零陷技术 

分 类 号：TN929.5[电子电信—通信与信息系统]