Efficient power control over fading channels

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

3 Citations (Scopus)

Abstract

This paper introduces a novel concept of efficient power control in nonergodic fading channels. We use the risk-reward approach to quantitatively describe the performance of power control schemes. A power control scheme is said to be efficient if it minimizes the risk for a given level of reward. The reward and risk are measured, respectively, as the expected value of the link spectral efficiency in excess of some predefined target value and the below-target semideviation of the link spectral efficiency distribution. Furthermore, we introduce a novel fundamental limit on the performance of adaptive power control schemes. The new fundamental limit, which we call the efficient frontier, is the set of all efficient power control schemes. We analytically derive the adaptive power control rule that achieves the fundamental limit. We show that no power control scheme can be constructed with the performance above the efficient frontier. The numerical results suggest that various state-of-the-art power control schemes are suboptimal, i.e., their risk-reward performance is below the efficient frontier.
Original languageEnglish
Title of host publication2008 IEEE Global Telecommunications Conference
Subtitle of host publicationIEEE GLOBECOM 2008
PublisherInstitute of Electrical and Electronic Engineers IEEE
Pages4679-4684
Number of pages6
ISBN (Print)978-1-4244-2324-8
DOIs
Publication statusPublished - 2008
MoE publication typeA4 Article in a conference publication
EventIEEE Global Telecommunications Conference, IEEE GLOBECOM 2008 - New Orleans, United States
Duration: 30 Nov 20083 Dec 2008

Publication series

Name
ISSN (Print)1930-529X

Conference

ConferenceIEEE Global Telecommunications Conference, IEEE GLOBECOM 2008
Abbreviated titleIEEE GLOBECOM 2008
CountryUnited States
CityNew Orleans
Period30/11/083/12/08

Fingerprint

Power control
Fading channels

Keywords

  • power control
  • fading
  • programmable control
  • adaptive control
  • finance
  • calculus
  • vectors
  • channel capacity
  • random variables
  • probability distribution

Cite this

Kotelba, A., & Mämmelä, A. (2008). Efficient power control over fading channels. In 2008 IEEE Global Telecommunications Conference: IEEE GLOBECOM 2008 (pp. 4679-4684). Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/GLOCOM.2008.ECP.896
Kotelba, Adrian ; Mämmelä, Aarne. / Efficient power control over fading channels. 2008 IEEE Global Telecommunications Conference: IEEE GLOBECOM 2008. Institute of Electrical and Electronic Engineers IEEE, 2008. pp. 4679-4684
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Kotelba, A & Mämmelä, A 2008, Efficient power control over fading channels. in 2008 IEEE Global Telecommunications Conference: IEEE GLOBECOM 2008. Institute of Electrical and Electronic Engineers IEEE, pp. 4679-4684, IEEE Global Telecommunications Conference, IEEE GLOBECOM 2008, New Orleans, United States, 30/11/08. https://doi.org/10.1109/GLOCOM.2008.ECP.896

Efficient power control over fading channels. / Kotelba, Adrian; Mämmelä, Aarne.

2008 IEEE Global Telecommunications Conference: IEEE GLOBECOM 2008. Institute of Electrical and Electronic Engineers IEEE, 2008. p. 4679-4684.

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

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AB - This paper introduces a novel concept of efficient power control in nonergodic fading channels. We use the risk-reward approach to quantitatively describe the performance of power control schemes. A power control scheme is said to be efficient if it minimizes the risk for a given level of reward. The reward and risk are measured, respectively, as the expected value of the link spectral efficiency in excess of some predefined target value and the below-target semideviation of the link spectral efficiency distribution. Furthermore, we introduce a novel fundamental limit on the performance of adaptive power control schemes. The new fundamental limit, which we call the efficient frontier, is the set of all efficient power control schemes. We analytically derive the adaptive power control rule that achieves the fundamental limit. We show that no power control scheme can be constructed with the performance above the efficient frontier. The numerical results suggest that various state-of-the-art power control schemes are suboptimal, i.e., their risk-reward performance is below the efficient frontier.

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Kotelba A, Mämmelä A. Efficient power control over fading channels. In 2008 IEEE Global Telecommunications Conference: IEEE GLOBECOM 2008. Institute of Electrical and Electronic Engineers IEEE. 2008. p. 4679-4684 https://doi.org/10.1109/GLOCOM.2008.ECP.896