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Outage Analysis of Cognitive Multihop Networks under Interference Constraints
Vo Nguyen Quoc BAO Trung Quang DUONG
IEICE TRANSACTIONS on Communications
Publication Date: 2012/03/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
decode-and-forward, underlay, multihop communication, assisted relay networks, cognitive radio,
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In this letter, we consider a cognitive radio based multihop network under the spectrum sharing underlay paradigm. By taking into account the interference constraints, we present an exact closed-form expression for outage probability, which is valid for the whole signal-to-noise ratio regime. In addition, some numerical examples of interest that study the effect of the number of hops and/or the interferer threshold on primary users are illustrated and discussed. Numerical results show that multihop systems still offer a considerable gain as compared to direct transmission under the same limit of interference.