Energy-efficient power loading algorithms for uniform-rate OFDM systems

Chun Ying Ma, Chia-Chi Huang

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

Abstract

In recent years, energy-efficiency has become one of the most critical issues in wireless communications. Although it is important and practical to design an energy-efficient power-loading algorithms for uniform-rate orthogonal frequency division multiplexing (OFDM) systems, the problem has not been explored in literature. The terminology uniform-rate in this paper means that each subcarrier adopts the same modulation scheme. To this end, we propose an adaptive power-loading algorithm to maximize the energy-efficiency for a uniform-rate OFDM system in this paper. To reduce the complexity, a sub-optimum solution is proposed. The numerical results show that the sub-optimum solution is close to the optimum solution. We also show that by carefully determining the modulation scheme, energy efficiency can be extensively improved.

Original languageEnglish
Title of host publicationIEEE Wireless Communications and Networking Conference, WCNC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1259-1263
Number of pages5
ISBN (Electronic)9781479930838
DOIs
StatePublished - 10 Nov 2014
Event2014 IEEE Wireless Communications and Networking Conference, WCNC 2014 - Istanbul, Turkey
Duration: 6 Apr 20149 Apr 2014

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Conference

Conference2014 IEEE Wireless Communications and Networking Conference, WCNC 2014
CountryTurkey
CityIstanbul
Period6/04/149/04/14

Keywords

  • Energy efficiency
  • green radio
  • power loading
  • uniform-rate OFDM

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