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Wireless Personal Communications

, Volume 28, Issue 3, pp 233–238 | Cite as

Error Rates in Generalized Shadowed Fading Channels

  • P.M. Shankar
Article

Abstract

Most of the existing models to describe the shadowed fading channels use either the Suzuki or Nakagami-lognormal probability density function (pdf), both based on lognormal shadowing. However, these two density functions do not lead to closed form solutions for the received signal power, making the computations of error rates and outages very cumbersome. A generalized or compound fading model which takes into account both fading and shadowing in wireless systems, is presented here. Starting with the Nakagami model for fading, shadowing is incorporated using a gamma distribution for the average power in the Nakagami fading model. This compound pdf developed here based on a gamma-gamma distribution is analytically simpler than the two pdfs based on lognormal shadowing and is general enough to incorporate most of the fading and shadowing observed in wireless channels. The performance of coherent BPSK is evaluated using this compound fading model.

fading and shadowing gamma pdf generalized fading channels Rayleigh-lognormal (RL) fading shadowed fading channels 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • P.M. Shankar
    • 1
  1. 1.Department of Electrical and Computer EngineeringDrexel UniversityPhiladelphiaU.S.A.

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