On the Reuse of Shadowed CRs as AF Diversity Relays in Cooperative Spectrum Sensing in Correlated Suzuki Fading Channels

Dinh, Thi Thai Mai and Nguyen, Quoc Tuan and Nguyen, Dinh Thong (2015) On the Reuse of Shadowed CRs as AF Diversity Relays in Cooperative Spectrum Sensing in Correlated Suzuki Fading Channels. IEICE Transactions on Communications, 98 (1). pp. 116-125. ISSN 1745-1345

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Abstract

Most recent work on cooperative spectrum sensing using cognitive radios has focused on issues involving the sensing channels and seemed to ignore those involving the reporting channels. Furthermore, no research has treated the effect of correlated composite Rayleigh-lognormal fading, also known as Suzuki fading, in cognitive radio. This paper proposes a technique for reuse of shadowed CRs, discarded during the sensing phase, as amplified-and-forward (AF) diversity relays for other surviving CRs to mitigate the effects of such fading in reporting channels. A thorough analysis of and a closed-form expression for the outage probability of the resulting cooperative AF diversity network in correlated composite Rayleigh-lognormal fading channels are presented in this paper. In particular, an efficient solution to the “PDF of sum-of-powers” of correlated Suzuki-distributed random variables using moment generating function (MGF) is proposed.

Item Type:	Article
Subjects:	Electronics and Communications > Communications Electronics and Communications
Divisions:	Faculty of Electronics and Telecommunications (FET)
Depositing User:	Assoc/Prof Duc Tan Tran
Date Deposited:	28 May 2016 08:24
Last Modified:	28 May 2016 08:26
URI:	http://eprints.uet.vnu.edu.vn/eprints/id/eprint/1691

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