A method of and apparatus for stable regulation of transmission power level in a radio system use the carrier-to-interference (C/I) ratio of the communication channel. A C/I target that is a monotonically decreasing function of the interference on the channel is used for regulating the transmission power...http://www.google.com.hk/patents/US5574982?utm_source=gb-gplus-share專利 US5574982 - Method and apparatus for regulating a power level of a transmitted radio signal
