Low complexity transmit antenna selection with power balancing in OFDM systems

Ki Hong Park, Young Chai Ko, Mohamed Slim Alouini

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

Abstract

In this paper, we consider multi-carrier systems with multiple transmit antennas under a power balancing constraint. Applying transmit antenna selection and fixed-power variable-rate transmission per subcarrier as a function of channel variations, we propose an implementation-friendly antenna selection method which offers a reduced complexity in comparison with the optimal antenna selection scheme, which uses numerical optimization. More specifically, in order to solve the subcarrier imbalance across the antennas, we operate a two-step reallocation procedure in order to minimize loss of spectral efficiency. We also provide an analytic lower bound on the spectral efficiency for the proposed scheme. Although this scheme is suboptimal, we show based on some selected numerical examples that our proposed scheme offers almost the same spectral efficiency as the optimal scheme.

Original languageEnglish
Title of host publication2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
Pages359-363
Number of pages5
DOIs
Publication statusPublished - 2009
Event2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009 - Perugia, Italy
Duration: 2009 Jun 212009 Jun 24

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

Other

Other2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
CountryItaly
CityPerugia
Period09/6/2109/6/24

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

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  • Cite this

    Park, K. H., Ko, Y. C., & Alouini, M. S. (2009). Low complexity transmit antenna selection with power balancing in OFDM systems. In 2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009 (pp. 359-363). [5161807] (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC). https://doi.org/10.1109/SPAWC.2009.5161807