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WCDMA采用宽带扩频技术,是自干扰系统,提高单个用户的发射功率能改善其服务质量,但对其他用户的干扰也相应增加。通过功率控制,可降低多址干扰、克服远近效应以及衰落的影响,从而保证上下行链路的质量。
WCDMA adopts wideband spread spectrum technology and is a self-interference system. Improving the transmission power of a single user can improve its service quality, but interference to other users also increases accordingly. Through the power control, multiple access interference can be reduced to overcome the effects of near and far effects and fading so as to ensure the quality of uplink and downlink.