TD-SCDMA系统的外环功率控制算法研究  

Investigation of Outer Loop Power Control Algorithms in TD-SCDMA Systems

作　　者：彭木根[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3期13-15,共3页Radio Engineering

基　　金：国家高技术研究发展计划(863计划)资助项目(2004AA123160)

摘　　要：在3GPP协议规范中对外环功率控制算法没有定义,由各设备生产和制造商决定。TD-SCDMA系统每时隙下服务用户数较WCDMA系统每帧下服务用户数明显减少;另外,采用了自适应的智能天线技术,适合WCDMA的外环功率控制算法不能直接适用于TD-SCDMA,提出了一种先进的自适应功率调整步长的外环功率控制算法。由于外环功率控制参数对系统性能影响较大,基于自适应智能天线技术,给出了不同参数下外环功率控制算法的性能,可用于TD-SCDMA网络的规划优化。In 3GPP, the outer loop power control algorithm is not defined, and it is determined by the manufacturers and operators. Due to adopting smart antenna scheme and there being only several users per slot in TD - SCDMA, the outer loop power control algorithm for WCDMA can＇t be directly available for TD - SCDMA. This paper investigates the outer loop power control algorithms in the TD - SCDMA system, and proposes an advanced outer loop algorithm, which is based on the adaptive power control adjustment step size. Since the .parameters related to the outer loop power control algorithms have great impacts on the system performance, the system performances under various parameter＇ values are presented when the adaptive smart antenna schemes are utilized, which can assist the network planning and optimization for TD - SCDMA systems.

关 键 词：TD—SCDMA 无线资源管理 功率控制 智能天线技术 

分 类 号：TP911[自动化与计算机技术]