TD-SCDMA系统中基于迭代处理的外环功率控制研究

Research on Outer-loop Power Control Based on Iterative Process in TD-SCDMA

摘要: 外环功率控制是TD-SCDMA系统闭环功率控制的重要组成环节, 决定了内环功率控制的SIR目标值。探讨了TD-SCDMA系统中功率控制的方法, 提出了一种基于误块率迭代的外环功率控制算法, 对不同信道条件、不同控制输入参数下的闭环功率控制效果进行了仿真。结果表明, 该算法对于系统整体性能的提高是有效的。

Abstract: Outer-loop power control is one of the important links in closed-loop power control of TD-SCDMA, it decides the target value of inner-loop power control.PC methods in TD-SCDMA system are discussed, an outer-loop power control algorithm based on iterative process is produced.The closed-loop power control under some conditions such as different channel environments and different control parameters is simulated.It is found that the power control algorithm can effectively improve the system performance.