Optimum Uplink Power/Rate Control for Minimum Delay in CDMA Networks

ETRI Journal

关键词: variable rate;    adaptive transmission;    link adaptation;    power control;    CDMA;   

Others  :  1184677
DOI  :  10.4218/etrij.03.0103.0001

【 摘 要 】

We derive a new joint power and rate control rule with which we can minimize the mean transmission delay in CDMA networks for a given mean transmission power. We show that it is optimal to respectively control the power inverse-linearly and the rate linearly to the square root of channel gain while maintaining the signal-to-interference ratio at a constant. We also show that the proposed joint power/rate control rule achieves excellent performance results in terms of the probability of the instantaneous delay being within a target delay against one-dimensional control schemes.

   

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