TD-SCDMA系统中基于递归平均的外环功率控制研究

Research on outer-loop power control based on recursion average in TD-SCDMA

功率控制是TD-SCDMA系统无线资源管理的核心技术之一,对于降低干扰、增加系统容量具有重要作用。阐述了TD-SCDMA系统中功率控制的方法,提出了一种基于递归平均的外环功率控制算法,并对不同信道条件、不同控制输入参数的闭环功率控制进行了仿真,结果表明,该算法对系统性能的提高是可行的和有效的。

Power control （PC） is one of the core wireless resource management technologies, and it is important for the reduction of interference and the increase of the capacity of the system. PC methods in TD-SCDMA system are elaborated, and an outer-loop PC algorithm based on reeursion average is produced. The closed-loop power control under some conditions such as different channel environment and different control parameters has been simulated. It is found out that the PC algorithm can improve the system performance effectively and feasibly.