Diversity combining with up-link power control

Sung Sik Nam, Mohamed Slim Alouini, Khalid A. Qaraqe

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

5 Scopus citations

Abstract

We introduce in this paper a new adaptive power-controlled diversity combining scheme that reduces the average transmitted power of the mobile units while meeting a certain minimum required quality of service. The key idea is (i) to collect and combine all the available diversity paths at the base station and then (ii) to request the mobile unit to increase or decrease its transmitted power just to track the required target signal-to-noise ratio (SNR). Four power control variants accounting for practical implementation constraints including discrete power levels and transmitter gain saturation are proposed and studied. Some selected numerical results, show that the proposed scheme offers considerable savings in the transmitted power levels over a wide SNR range but amplifier saturation leads to a violation of the target BER requirement in the low average SNR range. Additional numerical examples, show that the power control variants that take into account practical implementation constraints conserve the main features of the ideal continuous power algorithm.

Original languageEnglish (US)
Title of host publication2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
DOIs
StatePublished - 2006
Externally publishedYes
Event2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC - Helsinki, Finland
Duration: Sep 11 2006Sep 14 2006

Other

Other2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
CountryFinland
CityHelsinki
Period09/11/0609/14/06

ASJC Scopus subject areas

  • Engineering(all)

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