IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Is a Multi-Hop Relay Scheme Gainful in an IEEE 802.22-Based Cognitive Radio System?
Jungchae SHINDong-Kyu LEEHo-Shin CHO
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2009 Volume E92.B Issue 11 Pages 3528-3532

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Abstract

In this paper, we formulate a plan to operate multi-hop relays in IEEE 802.22-based cognitive radio (CR) systems and evaluate system performance to consider the propriety of a multi-hop relay scheme in CR systems. A centralized radio resource management and a simple deployment of relay stations (RSs) are assessed to make relay operations feasible under CR conditions. Simulation results show that the proposed multi-hop relay scheme significantly increases system throughput compared to a no-relay CR system as the incumbent user (IU) traffic gets heavier. Furthermore, the optimal number of hops can be determined given the traffic conditions.

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© 2009 The Institute of Electronics, Information and Communication Engineers
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