TD-SCDMA系统中基于门限报告的外环功率控制研究

摘要

Power control is very important for TD-SCDMA systems, while outer loop power control provides reference value of signal-to-interference ratio (SIR) to inter loop power control. A power control algorithm based on threshold report is proposed in which the target SIR is adjusted according to block error ratio (BLER) and BLER acceptance period, detailed formulas are presented. Simulation results show that the proposed algorithm achieves the requirements of power control in 3GPP.%功率控制是TD-SCDMA系统正常工作所必须的，外环功率控制为内环功率控制提供SIR参考值。为此提出了一种门限报告算法，该算法通过统计误块数和误块容忍周期来决定是否调整目标信干比，同时还给出了具体参数的公式，可以较好地实现3GPP中对外环功率控制的要求。