A general framework for the calculation of the average outage duration of diversity systems over generalized fading channels

Young-Chai Ko, Ali Abdi, Mohamed Slim Alouini, Mostafa Kaveh

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22 Citations (Scopus)

Abstract

This paper presents two approaches for the calculation of the average outage duration (AOD) of diversity systems over generalized fading channels. First, a "classical" probability density function (pdf)-based approach is used to obtain exact closed-form expressions for the AOD of maximal-ratio combiner (MRC) over independent and identically distributed (i.i.d.) Rayleigh and Rice fading channels. On the other hand, relying upon a numerical technique for inverting Laplace transforms of cumulative distribution functions, and in conjunction with the calculation of the joint characteristic function (CF) of the combined output signal-to-noise ratio process and its time derivative, a CF-based approach is adopted to compute the AOD of MRC over non-i.i.d. Rayleigh and Rician diversity paths. The mathematical expressions are illustrated by presenting and interpreting numerical results/plots, showing the impact of the power delay profile, the angles of arrival, and the angle spreads on the AOD of diversity systems operating over typical fading channels of practical interest.

Original languageEnglish
Pages (from-to)1672-1680
Number of pages9
JournalIEEE Transactions on Vehicular Technology
Volume51
Issue number6
Publication statusPublished - 2002 Nov 1
Externally publishedYes

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Keywords

  • Average fade duration
  • Average outage duration
  • Characteristic function
  • Diversity combining
  • Fading channels
  • Level-crossing rate

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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