Cargando…

Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions

Analytical approaches for the characterisation of the compound channels in transparent multihop relay transmissions over independent fading channels are considered in this paper. Compound channels with homogeneous links are considered first. Using Mellin transform technique, exact expressions are de...

Descripción completa

Detalles Bibliográficos
Autores principales: Kanjirathumkal, Cibile K., Mohammed, Sameer S., Jacob, Lillykutty
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3948473/
https://www.ncbi.nlm.nih.gov/pubmed/24701175
http://dx.doi.org/10.1155/2014/538578
_version_ 1782306781657038848
author Kanjirathumkal, Cibile K.
Mohammed, Sameer S.
Jacob, Lillykutty
author_facet Kanjirathumkal, Cibile K.
Mohammed, Sameer S.
Jacob, Lillykutty
author_sort Kanjirathumkal, Cibile K.
collection PubMed
description Analytical approaches for the characterisation of the compound channels in transparent multihop relay transmissions over independent fading channels are considered in this paper. Compound channels with homogeneous links are considered first. Using Mellin transform technique, exact expressions are derived for the moments of cascaded Weibull distributions. Subsequently, two performance metrics, namely, coefficient of variation and amount of fade, are derived using the computed moments. These metrics quantify the possible variations in the channel gain and signal to noise ratio from their respective average values and can be used to characterise the achievable receiver performance. This approach is suitable for analysing more realistic compound channel models for scattering density variations of the environment, experienced in multihop relay transmissions. The performance metrics for such heterogeneous compound channels having distinct distribution in each hop are computed and compared with those having identical constituent component distributions. The moments and the coefficient of variation computed are then used to develop computationally efficient estimators for the distribution parameters and the optimal hop count. The metrics and estimators proposed are complemented with numerical and simulation results to demonstrate the impact of the accuracy of the approaches.
format Online
Article
Text
id pubmed-3948473
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Hindawi Publishing Corporation
record_format MEDLINE/PubMed
spelling pubmed-39484732014-04-03 Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions Kanjirathumkal, Cibile K. Mohammed, Sameer S. Jacob, Lillykutty ScientificWorldJournal Research Article Analytical approaches for the characterisation of the compound channels in transparent multihop relay transmissions over independent fading channels are considered in this paper. Compound channels with homogeneous links are considered first. Using Mellin transform technique, exact expressions are derived for the moments of cascaded Weibull distributions. Subsequently, two performance metrics, namely, coefficient of variation and amount of fade, are derived using the computed moments. These metrics quantify the possible variations in the channel gain and signal to noise ratio from their respective average values and can be used to characterise the achievable receiver performance. This approach is suitable for analysing more realistic compound channel models for scattering density variations of the environment, experienced in multihop relay transmissions. The performance metrics for such heterogeneous compound channels having distinct distribution in each hop are computed and compared with those having identical constituent component distributions. The moments and the coefficient of variation computed are then used to develop computationally efficient estimators for the distribution parameters and the optimal hop count. The metrics and estimators proposed are complemented with numerical and simulation results to demonstrate the impact of the accuracy of the approaches. Hindawi Publishing Corporation 2014-02-18 /pmc/articles/PMC3948473/ /pubmed/24701175 http://dx.doi.org/10.1155/2014/538578 Text en Copyright © 2014 Cibile K. Kanjirathumkal et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Kanjirathumkal, Cibile K.
Mohammed, Sameer S.
Jacob, Lillykutty
Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions
title Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions
title_full Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions
title_fullStr Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions
title_full_unstemmed Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions
title_short Analysis and Modeling of Realistic Compound Channels in Transparent Relay Transmissions
title_sort analysis and modeling of realistic compound channels in transparent relay transmissions
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3948473/
https://www.ncbi.nlm.nih.gov/pubmed/24701175
http://dx.doi.org/10.1155/2014/538578
work_keys_str_mv AT kanjirathumkalcibilek analysisandmodelingofrealisticcompoundchannelsintransparentrelaytransmissions
AT mohammedsameers analysisandmodelingofrealisticcompoundchannelsintransparentrelaytransmissions
AT jacoblillykutty analysisandmodelingofrealisticcompoundchannelsintransparentrelaytransmissions