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Distributed utility-maximization using a resource pricing power control in uplink DS-CDMA

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3 Author(s)

This letter considers a distributed utility maximization power control scheme in uplink DS-CDMA systems. Maximizing a utility function is solved by Lagrangian dual decomposition, where the Lagrangian multiplier can be considered as a resource price charging to users. By adjusting the price in a distributed fashion, the proposed algorithm results in a bang- bang type power control, 'maximum power transmission' or 'shutdown'. Numerical result shows that the proposed algorithm achieves around 95% of the optimal utility maximization with a modest computational burden.

Published in:

Communications Letters, IEEE  (Volume:12 ,  Issue: 4 )

Date of Publication:

April 2008

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