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Energy optimal control for time-varying wireless networks

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1 Author(s)
Neely, M.J. ; Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA

We develop a dynamic control strategy for minimizing energy expenditure in a time-varying wireless network with adaptive transmission rates. The algorithm operates without knowledge of traffic rates or channel statistics, and yields average power that is arbitrarily close to the minimum possible value achieved by an algorithm optimized with complete knowledge of future events. Proximity to this optimal solution is shown to be inversely proportional to network delay. We then present a similar algorithm that solves the related problem of maximizing network throughput subject to peak and average power constraints. The techniques used in this paper are novel and establish a foundation for stochastic network optimization

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Information Theory, IEEE Transactions on  (Volume:52 ,  Issue: 7 )