Cart (Loading....) | Create Account
Close category search window

Improving WSN Simulation and Analysis Accuracy Using Two-Tier Channel Models

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Iqbal, A. ; NUST Inst. of Inf. Technol., Nat. Univ. of Sci. & Technol. (NUST), Rawalpindi ; Khayam, S.A.

Accurate simulation and analysis of wireless protocols and systems is inherently dependent on an accurate model of the underlying channel. In this paper, we show that residual MAC layer wireless sensor network (WSN) channels cannot be characterized using the commonly-used high-order Markov channel models. Instead, we demonstrate that 2-Tier models, in which a high-level (tier 1) frame-level model excites a lower-level (tier 2) bit-error model, are needed to accurately characterize WSN residual channels. We compare the modeling accuracy of 1-Tier and 2-Tier models using residual bit-error traces collected over an operational 802.15.4 network. We first analyze error traces collected over different setups to investigate the amount of bit-level memory present in wireless sensor network channels. We then validate the accuracy of the proposed models using information divergence measures. We show that 2- Tier models have significantly and consistently better accuracy than 1-Tier models. Finally, we demonstrate that the wrong choice of a channel model can result in grossly inaccurate simulation results. This claim is substantiated by simulating three important metrics: (i) recovery ratio for an abstract Forward Error Correction (FEC) scheme, (ii) frame goodput of an unreliable protocol over a multihop network, and (Hi) number of retransmissions per packet for a reliable protocol.

Published in:

Communications, 2008. ICC '08. IEEE International Conference on

Date of Conference:

19-23 May 2008

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.