A game-theoretic approach to energy-efficient modulation in CDMA networks with delay constraints

Farhad Meshkati, Andrea J. Goldsmith, H. Vincent Poor, Stuart C. Schwartz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

A game-theoretic framework is used to study the effect of constellation size on the energy efficiency of wireless networks for M-QAM modulation. A non-cooperative game is proposed in which each user seeks to choose its transmit power (and possibly transmit symbol rate) as well as the constellation size in order to maximize its own utility while satisfying its delay quality-of-service (QoS) constraint. The utility function used here measures the number of reliable bits transmitted per joule of energy consumed, and is particularly suitable for energy-constrained networks. The best-response strategies and Nash equilibrium solution for the proposed game are derived. It is shown that in order to maximize its utility (in bits per joule), a user must choose the lowest constellation size that can accommodate the user's delay constraint. Using this framework, the tradeoffs among energy efficiency, delay, throughput and constellation size are also studied and quantified. The effect of trellis-coded modulation on energy efficiency is also discussed.

Original languageEnglish (US)
Title of host publicationProceedings - 2007 IEEE Radio and Wireless Symposium, RWS
Pages11-14
Number of pages4
DOIs
StatePublished - Aug 28 2007
Event2007 IEEE Radio and Wireless Symposium, RWS - Long Beach, CA, United States
Duration: Jan 9 2007Jan 11 2007

Publication series

NameProceedings - 2007 IEEE Radio and Wireless Symposium, RWS

Other

Other2007 IEEE Radio and Wireless Symposium, RWS
CountryUnited States
CityLong Beach, CA
Period1/9/071/11/07

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Science Applications

Keywords

  • Cross-layer design
  • Delay
  • Energy efficiency
  • Game theory
  • M-QAM modulation
  • QoS
  • Utility function

Fingerprint Dive into the research topics of 'A game-theoretic approach to energy-efficient modulation in CDMA networks with delay constraints'. Together they form a unique fingerprint.

  • Cite this

    Meshkati, F., Goldsmith, A. J., Poor, H. V., & Schwartz, S. C. (2007). A game-theoretic approach to energy-efficient modulation in CDMA networks with delay constraints. In Proceedings - 2007 IEEE Radio and Wireless Symposium, RWS (pp. 11-14). [4160637] (Proceedings - 2007 IEEE Radio and Wireless Symposium, RWS). https://doi.org/10.1109/RWS.2007.351784