Distributed multiuser power control for digital subscriber lines

• DOI: 10.1109/jsac.2002.1007390
• Publication Date: 2002-11-07T19:41:04Z
• Authors: Wei Yu; G. Ginis; J.M. Cioffi
• Keywords: Transmitter power output

This paper considers the multiuser power control problem in a frequency-selective interference channel. The channel is modeled as noncooperative game, and existence uniqueness of Nash equilibrium are established for two-player version game. An iterative water-filling algorithm proposed to efficiently reach equilibrium. can be implemented distributively without need centralized control. It implicitly takes into account loop transfer functions cross couplings, it reaches competitively optimal allocation by offering an opportunity loops negotiate best use frequency with each other. When applied upstream backoff very-high bit-rate digital subscriber lines downstream spectral compatibility asymmetric lines, new found give significant performance improvement when compared existing methods.