How much multiuser diversity is required over large-scale fading?

Youngwook Ko, S.A. Vorobyov, M. Ardakani

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

2 Citations (Scopus)

Abstract

In multiuser diversity systems, the impact of large-scale fading on the total system performance such as link quality and system power has not been widely addressed. Considering large-scale fading, we propose an adaptive multiuser scheduling to minimize the total system power while reducing the effect of large-scale fading on the system bit error rate. The number of active users is adapted to every shadow variation, which varies slower than small-scale fading. We consider the two widely used multiuser systems (i.e., delay-tolerant, and delay-sensitive multiuser systems). Closed-form expressions for the bit error rate are derived. The selection procedure for the minimum number of users is introduced for guaranteed performance of the above multiuser systems. The impact of adaptive multiuser diversity gain on the system power and bit error rate is illustrated over large-scale fading channels by numerical results.
Original languageEnglish
Title of host publicationIEEE International Conference on Communications, 2009. (ICC '09)
Pages1-5
ISBN (Electronic)978-1-4244-3435-0
DOIs
Publication statusPublished - Jun 2009
EventIEEE International Conference on Communications (ICC 2009) - Dresden, Germany
Duration: 01 Jun 200901 Jun 2009

Conference

ConferenceIEEE International Conference on Communications (ICC 2009)
CountryGermany
CityDresden
Period01/06/200901/06/2009

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