Performance analysis of multiuser selection diversity

Lin Yang*, Mohamed-Slim Alouini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

In this paper, the performance of scheduling algorithms exploiting the multiuser selection diversity is studied. The authors consider schedulers with affordable-rate transmission and adaptive transmission based on the absolute signal-to-noise ratio (SNR) and the normalized SNR. In contrast to previous studies on multiuser diversity systems, channel dynamics is taken into consideration in this paper by a novel formulation based on the level-crossing analysis of stochastic processes. Then, a connection is made between the Doppler frequency shift, which indicates the channel temporal correlation, and the average (channel) access time, the average waiting time between accesses, and the average access rate of active users. These properties are important for the scheduler design, especially for applications where delay is a concern. In addition, analytical expressions for the system throughput and the degree of fairness when users have nonidentical average channel conditions are presented. These expressions quantify the effect of disparateness in users' average channel conditions on the system performance.

Original languageEnglish (US)
Pages (from-to)1848-1861
Number of pages14
JournalIEEE Transactions on Vehicular Technology
Volume55
Issue number6
DOIs
StatePublished - Nov 1 2006

Keywords

  • Adaptive transmission
  • Average access rate (AAR)
  • Average access time (AAT)
  • Capacity
  • Degree of fairness (DOF)
  • Fading channels
  • Multiuser selection diversity
  • Spectral efficiency

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Performance analysis of multiuser selection diversity'. Together they form a unique fingerprint.

Cite this