Diversity combining with up-link power control

Sung Sik Nam, Mohamed Slim Alouini, Khalid Qaraqe

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

5 Citations (Scopus)

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
Title of host publication2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
DOIs
Publication statusPublished - 2006
Event2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC - Helsinki, Finland
Duration: 11 Sep 200614 Sep 2006

Other

Other2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
CountryFinland
CityHelsinki
Period11/9/0614/9/06

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Nam, S. S., Alouini, M. S., & Qaraqe, K. (2006). Diversity combining with up-link power control. In 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC [4022618] https://doi.org/10.1109/PIMRC.2006.254460