A comparative study of two shadow fading models in ultrawideband and other wireless systems

Ali Abdi, Mostafa Kaveh

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The distribution of the local average power at a mobile is usually considered to be lognormal in terrestrial and satellite channels. However, the mathematical form of the lognormal distribution is not convenient for analytic calculations. In this paper, we show the utility of the gamma distribution for shadow fading, in both terrestrial and satellite channels, using empirical data. Furthermore, we show that the application of the gamma model of shadow fading results in closed-form and mathematically-tractable solutions for key system performance measures such as the average symbol error rate of different modulations with a variety of diversity combining techniques.

Original languageEnglish (US)
Article number5739088
Pages (from-to)1428-1434
Number of pages7
JournalIEEE Transactions on Wireless Communications
Volume10
Issue number5
DOIs
StatePublished - May 2011

Bibliographical note

Funding Information:
Manuscript received March 2, 2010; revised October 1, 2010; accepted January 11, 2011. The associate editor coordinating the review of this paper and approving it for publication was G. Durgin. This work was presented at the IEEE Vehicular Technology Conference, Houston, TX, 1999, and Atlantic City, NJ, 2001. It was supported in part by the NSF, under the Wireless Initiative Program, Grant #9979443. A. Abdi is with the Dept. of Elec. and Comp. Eng., New Jersey Institute of Technology, Newark, NJ 07102, USA (ali.abdi@njit.edu). M. Kaveh is with the Dept. of Elec. and Comp. Eng., University of Minnesota, Minneapolis, Minnesota 55455, USA. Digital Object Identifier 10.1109/TWC.2011.031611.100309

Keywords

  • Shadow fading
  • fading channels
  • gamma distribution
  • large-scale fading
  • lognormal distribution
  • performance analysis
  • shadowing

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