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Adaptive Water-Filling Power Control for Wireless Communications Networks

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2 Author(s)
Wang, F. ; Fac. of Appl. Sci., Memorial Univ. of Newfoundland, St. John''s, NL ; Liu, Z.

Power control is an important approach to improve capacity of wireless channels. Provided that the channel state is known at both the transmitter and the receiver, the optimal power control is a water-filling strategy which depends on the channel state. In this work, we establish some properties of the water-filling power adaptation strategy and propose an algorithm for the transmitter to automatically tune the water-filling strategy. Numerical examples are provided to show the effectiveness of the proposed algorithm.

Published in:

Communications Letters, IEEE  (Volume:12 ,  Issue: 10 )

Date of Publication:

October 2008

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