A multi-user power control algorithm for digital subscriber lines

Author

Lee, Jungwon ; Sonalkar, Ranjan V. ; Cioffi, John M.

Author_Institution

Marvell Semicond. Inc., Sunnyvale, CA, USA

Volume

9

Issue

3

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

193

Lastpage

195

Abstract

The paper investigates the power control problem in a frequency-selective interference channel. A centralized power control algorithm is developed with the objective of maximizing the achievable rate region given an average power constraint for each user. The proposed algorithm is based on the multi-user discrete bit-loading algorithm that considers the power allocation over frequency and users simultaneously. Simulation results for very high-speed digital subscriber line (VDSL) systems show that the proposed algorithm achieves a larger rate region than that achieved by a power control algorithm based on iterative waterfilling.

Keywords

digital subscriber lines; optimisation; power control; telecommunication control; VDSL; achievable rate region maximization; discrete multi-tone; frequency-selective interference channel; iterative waterfilling; multi-user discrete bit-loading algorithm; multi-user power control algorithm; power allocation; user average power constraint; very high-speed digital subscriber lines; Broadcasting; Crosstalk; DSL; Frequency; Interference channels; Iterative algorithms; OFDM modulation; Power control; Radio spectrum management; Transmitters;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2005.03004

Filename

1411003