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Wireless Personal Communications

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01-02-2014

Dynamic Spectrum Sharing for OFDMA-Based Multi-hop Cognitive Radio Networks with Priority

Authors: Shuta Kako, Takeo Fujii, Osamu Takyu

Published in: Wireless Personal Communications | Issue 3/2014

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Abstract

In this paper, we propose a resource assignment scheme of a secondary user (SU) for a multi-hop cognitive radio network. In multi-hop networks, since each link has different SNR because of their different distance between stations and multipath fading, the link of the smallest SNR is the bottleneck. For overcoming this problem, it is proposed to give a priority to each link based on the link SNR and to assign the resource blocks (RBs) in ordering of instantaneous SNR on the link. This link priority information is shared among nodes through a control channel. Then, we assign the selected SU RB to each SU node according to the SNR ordering with distributed manner. We confirm the effectiveness of the proposed SU RB assignment by using computer simulation.

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Title: Dynamic Spectrum Sharing for OFDMA-Based Multi-hop Cognitive Radio Networks with Priority
Authors: Shuta Kako
Takeo Fujii
Osamu Takyu
Publication date: 01-02-2014
Publisher: Springer US
Published in: Wireless Personal Communications / Issue 3/2014
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI: https://doi.org/10.1007/s11277-013-1345-z

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