Achievable Channel Cutoff Rate and Bandwidth Efficiency in Indoor Wireless Environments

Indrakshi Dey, Theodoros A. Tsiftsis, Corbett Rowell

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, analytical expressions for the channel capacity, channel cutoff rate, and achievable bandwidth efficiency associated with M-ary signaling and Joint Fading Two-path Shadowing (JFTS) fading/shadowing channel model that characterize mobility-constrained indoor propagation scenarios are derived. Expressions for the bandwidth efficiency of a JFTS fading channel involve infinite-series summation since the probability density function of the JFTS signal-to-noise ratio (SNR) contains infinite series. We derive lower and upper bounds on the errors resulting from truncating the infinite series in the bandwidth efficiency expression. The cutoff rate and bandwidth efficiency analysis can be used to demonstrate how much throughput can be practically achieved when M-ary signaling techniques are implemented over indoor composite fading/shadowing channel conditions. Simulation results show that in order to achieve 3 bits/symbol, the average SNR for a 16-quadrature-amplitude-modulation (16-QAM) system requires almost 10 dB more for a JFTS channel model compared with a traditional Rayleigh channel model, thus reinforcing the necessity of using proper channel models for indoor communication systems.

Original languageEnglish
Article number7451265
Pages (from-to)10074-10079
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Volume65
Issue number12
DOIs
Publication statusPublished - Dec 1 2016

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Keywords

  • Bandwidth efficiency
  • capacity
  • channel cut-off rate
  • joint fading two-path shadowing (JFTS)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Computer Networks and Communications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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