Journal
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
Volume 20, Issue 5, Pages 1105-1115Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSAC.2002.1007390
Keywords
asymmetric digital subscriber line (ADSL); dynamic spectral management; game theory; interference channel; iterative water-filling; Nash equilibrium; power control; spectral compatibility; upstream power backoff; very-high bit-rate digital subscriber line (VDSL)
Ask authors/readers for more resources
This paper considers the multiuser power control problem in a frequency-selective interference channel. The interference channel is modeled as a noncooperative game, and the existence and uniqueness of a Nash equilibrium are established for a two-player version of the game. An iterative water-filling algorithm is proposed to efficiently reach the Nash equilibrium. The iterative water-filling algorithm can be implemented distributively without the need for centralized control. It implicitly takes into account the loop transfer functions and cross couplings, and it reaches a competitively optimal power allocation by offering an opportunity for loops to negotiate the best use of power and frequency with each other. When applied to the upstream power backoff problem in very-high bit-rate digital subscriber lines and the downstream spectral compatibility problem in asymmetric digital subscriber lines, the new power control algorithm is found to give a significant performance improvement when compared with existing methods.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available