Optimal power allocation for energy efficiency maximization in distributed antenna systems

Heejin Kim, Sang Rim Lee, Changick Song, Inkyu Lee

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

26 Citations (Scopus)

Abstract

In this paper, we present a power allocation method for a distributed antenna system (DAS) to maximize energy efficiency (EE) which is defined as the ratio of the transmission rate to the total consumed power. Different from conventional EE maximization schemes which require iterative numerical methods, we derive the optimal solution as closed form by solving Karush-Kuhn-Tucker conditions. The obtained closed form expression is applicable to DAS with an arbitrary number of distributed antenna (DA) ports and general per-DA port power constraints, and is also guaranteed to be globally optimum. Through Monte Carlo simulations, we show that the proposed power allocation method produces the optimal average EE identical to exhaustive search with significantly reduced computational complexity. In addition, we demonstrate that DAS is more beneficial in terms of EE compared to conventional antenna systems.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
Pages5769-5773
Number of pages5
DOIs
Publication statusPublished - 2013 Dec 1
Event2013 IEEE International Conference on Communications, ICC 2013 - Budapest, Hungary
Duration: 2013 Jun 92013 Jun 13

Other

Other2013 IEEE International Conference on Communications, ICC 2013
CountryHungary
CityBudapest
Period13/6/913/6/13

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Kim, H., Lee, S. R., Song, C., & Lee, I. (2013). Optimal power allocation for energy efficiency maximization in distributed antenna systems. In IEEE International Conference on Communications (pp. 5769-5773). [6655516] https://doi.org/10.1109/ICC.2013.6655516