Energy-efficient power control for contention-based synchronization in OFDMA systems with discrete powers and limited feedback

Giacomo Bacci, Luca Sanguinetti, Marco Luise, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

This work derives a distributed and iterative algorithm by which mobile terminals can selfishly control their transmit powers during the synchronization procedure specified by the IEEE 802.16m and the 3GPP long-term evolution standards for orthogonal frequency-division multiple-access technologies. The proposed solution aims at maximizing the energy efficiency of the network and is derived on the basis of a finite noncooperative game in which the players have discrete action sets of transmit powers. The set of Nash equilibria of the game is investigated, and a distributed power control algorithm is proposed to achieve synchronization in an energy-efficient manner under the assumption that the feedback from the base station is limited. Numerical results show that the proposed solution improves the energy efficiency as well as the timing estimation accuracy of the network compared to existing alternatives while requiring a reasonable amount of information to be exchanged on the return channel.

Original languageEnglish (US)
Article number192
JournalEurasip Journal on Wireless Communications and Networking
Volume2013
Issue number1
DOIs
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Science Applications
  • Computer Networks and Communications

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