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Wireless Personal Communications
Erschienen in: Wireless Personal Communications 1/2013

01.09.2013

Distributed Delay-Aware Routing and Metrics Evaluation for Cognitive Radio Networks

verfasst von: Yean-Fu Wen

Erschienen in: Wireless Personal Communications | Ausgabe 1/2013

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Abstract

Cognitive radii can dynamically sense, negotiate, and switch to available spectral bands to enhance spectrum utilization. The available spectral resource may vary with time and places, which lead to several implementation difficulties to send data in multi-hop cognitive radio networks (CRNs). We considered such factors as available time, spectral bands, transmission ranges, error rates, and primary user interruption rates, as well as sensing, negotiating, selecting, and switching time, and designed a delay-aware routing metric for multi-band, multi-rate, and multi-range CRNs. A distributed routing scheme was designed, and the performance was evaluated by a centralized algorithm in regard to the average and maximal end-to-end delays. The results demonstrated that the metrics considering the link- and nodal-delays outperforms current solutions, including probability-aware, capacity-aware, and hop-count methods, by an average of 13 %. We further discuss related issues and conclude our findings.
Vorheriger Artikel Linear and Nonlinear Precoding Schemes for Centralized Multicell MIMO-OFDM Systems

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Metadaten
Titel
Distributed Delay-Aware Routing and Metrics Evaluation for Cognitive Radio Networks
verfasst von
Yean-Fu Wen
Publikationsdatum
01.09.2013
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 1/2013
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-013-1042-y

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