Power minimization under real-time source distortion constraints in wireless networks

Andres Kwasinski, Zhu Han, K. J. Ray Liu, Nariman Farvardin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

In multiple access wireless networks with co-channel interference, allocating resources such as transmitted powers and source rates is a task critical to improve performance. In this paper, we introduce a new technique aimed at minimizing the overall transmitted power subject to constraints on the incurred source distortion. The technique is based on the use of real-time source codecs with externally adaptable output rate and rate compatible punctured convolutional (RCPC) channel encoders. We develop an adaptive algorithm to find the optimal power and source rate allocation to the different users according to their channel conditions and under distortion constraints. We present simulation results to show that it is possible to reduce the overall transmitted power significantly with a relatively small distortion increases for some users, and while keeping the network average distortion unchanged.

Original languageEnglish
Title of host publication2003 IEEE Wireless Communications and Networking Conference, WCNC 2003
Pages532-536
Number of pages5
ISBN (Electronic)0780377001
DOIs
StatePublished - 2003
Event2003 IEEE Wireless Communications and Networking Conference: The Dawn of Pervasive Communication, WCNC 2003 - New Orleans, United States
Duration: 16 Mar 200320 Mar 2003

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume1
ISSN (Print)1525-3511

Conference

Conference2003 IEEE Wireless Communications and Networking Conference: The Dawn of Pervasive Communication, WCNC 2003
Country/TerritoryUnited States
CityNew Orleans
Period16/03/0320/03/03

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