摘要
在第三代移动通信系统的各标准中都以CDMA技术作为基本技术,而CDMA系统本身是干扰受限系统,需要移动台到达基站的信号强度及信噪比等尽可能最小,才能在最大程度上提高系统的容量及可靠性。要做到这些完全依赖于系统中多方式的功率控制技术。分析目前PHS,GSM系统中的功率要求,阐述在CDMA系统中的功率控制,针对其中的前向功率控制和反向功率控制技术,详细分析其控制过程及优缺点,对于3G系统的设计具有一定参考意义。
All the standards of the third generation mobile communication system are based on the CDMA technology,but the CDMA system is an interference limited system.Therefore,it needs least signal intensity and SNR from mobile station to the base station,so as to improve the capacity and reliability of the system to the full extent.To achieve these goals,it entirely depends on the multi-mode power control technology.The power requirement of the PHS and GSM systems is analyzed.The power control technology of the CDMA system is described.Its control process,advantages and disadvantages are analysed aiming at the forward and backward power control.
出处
《现代电子技术》
2010年第9期81-83,共3页
Modern Electronics Technique
