SIR Measurement and Close Loop Power Control for DS-CDMA systems
Huang Ai · 2000
In this paper,an SIR-based close loop power control algorithm is proposed,which only utilizes the pilot of control channel in DS-CDMA uplink to measure the received SIR.The performance of the uplink is analyzed by meanings of computer simulations.The results show that due to coding,interleaving,and power control,for a given bit error rate,the required signal to interference ratio increases slightly as the fading speed increases;The optimal power control stepsize depends on channel fading speed;If the fransmission error probability of power control command is less than 10 -1 ,it has a little effect on the link performance.