Power control and receiver design for energy efficiency in multipath CDMA channels with bandlimited waveforms

Stefano Buzzi, Valeria Massaro, H. Vincent Poor

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

4 Scopus citations

Abstract

This paper is focused on the cross-layer design problem of joint multiuser detection and power control for energy-efficiency optimization in a wireless data network through a game-theoretic approach. Building on work of Meshkati, et al., wherein the tools of game-theory are used in order to achieve energy-efficiency in a simple synchronous code division multiple access system, system asynchronism, the use of bandlimited chip-pulses, and the multipath distortion induced by the wireless channel are explicitly incorporated into the analysis. Several non-cooperative games are proposed wherein users may vary their transmit power and their uplink receiver in order to maximize their utility, which is defined here as the ratio of data throughput to transmit power. In particular, the case in which a linear multiuser detector is adopted at the receiver is considered first, and then, the more challenging case in which non-linear decision feedback multiuser detectors are employed is considered. The proposed games are shown to admit a unique Nash equilibrium point, while simulation results show the effectiveness of the proposed solutions, as well as that the use of a decision-feedback multiuser receiver brings remarkable performance improvements.

Original languageEnglish (US)
Title of host publicationForty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings
Pages282-287
Number of pages6
DOIs
StatePublished - Dec 1 2007
Event41st Annual Conference on Information Sciences and Systems, CISS 2007 - Baltimore, MD, United States
Duration: Mar 14 2007Mar 16 2007

Publication series

NameForty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings

Other

Other41st Annual Conference on Information Sciences and Systems, CISS 2007
CountryUnited States
CityBaltimore, MD
Period3/14/073/16/07

All Science Journal Classification (ASJC) codes

  • Computer Science(all)

Keywords

  • CDMA
  • Energy-efficiency
  • Multipath fading
  • Non-cooperative games
  • Power control

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    Buzzi, S., Massaro, V., & Poor, H. V. (2007). Power control and receiver design for energy efficiency in multipath CDMA channels with bandlimited waveforms. In Forty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings (pp. 282-287). [4298314] (Forty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings). https://doi.org/10.1109/CISS.2007.4298314