Energy efficient power control in impulse radio UWB wireless networks

Giacomo Bacci, Marco Luise, H. Vincent Poor, Antonia M. Tulino

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

In this paper, a game-theoretic model for studying power control for wireless data networks in frequency-selective multipath environments is analyzed. The uplink of an impulse-radio ultrawideband system is considered. The effects of self-interference and multiple-access interference on the performance of generic Rake receivers are investigated for synchronous systems. Focusing on energy efficiency, a noncooperative game is proposed in which users in the network are allowed to choose their transmit powers to maximize their own utilities, and the Nash equilibrium for the proposed game is derived. It is shown that, due to the frequency selective multipath, the noncooperative solution is achieved at different signal-to-interference-plus-noise ratios, depending on the channel realization and the type of Rake receiver employed. A large-system analysis is performed to derive explicit expressions for the achieved utilities. The Pareto-optimal (cooperative) solution is also discussed and compared with the noncooperative approach.

Original languageEnglish (US)
Pages (from-to)508-520
Number of pages13
JournalIEEE Journal on Selected Topics in Signal Processing
Volume1
Issue number3
DOIs
StatePublished - Oct 2007

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering

Keywords

  • Energy efficiency
  • Frequency-selective multipath
  • Game theory
  • Impulse-radio (IR)
  • Large-system analysis
  • Nash equilibrium
  • Power control
  • Rake receivers
  • Ultra-wide band (UWB)

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