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功率控制是新一代无线通信网络的关键技术之一。在WCDMA系统中,如何有效地进行功率控制,在保证用户要求的QoS前提下,最大程度降低发射功率,减少系统干扰从而增加系统容量,是WCDMA技术中的重点。文中详细阐述了WCDMA系统中功率控制的原理、算法及存在的问题和相关研究方向,针对WCDMA系统内环功率控制、外环功率控制、上行功率控制、下行功率控制等进行了分析,提出了一种简单实用的外环功率控制算法。
Power control is one of the key technologies of the new generation wireless communication network. In the WCDMA system, how to effectively control the power is a key point in the WCDMA technology, which is to reduce the transmit power and reduce the system interference to increase the system capacity under the premise of ensuring the QoS required by users. In this paper, the principle, algorithm, existing problems and related research directions of WCDMA system are described in detail. According to the analysis of inner loop power control, outer loop power control, uplink power control and downlink power control in WCDMA system, Simple and practical outer loop power control algorithm.