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Performance Analysis of Cyclic Prefixed Single-Carrier Spectrum Sharing Relay Systems in Primary User Interference
Blekinge Institute of Technology, School of Computing.
2012 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 60, no 12, 6729-6734 p.Article in journal (Refereed) Published
Abstract [en]

For cyclic prefixed single-carrier (CP-SC) spectrum sharing relay systems, the joint impact of the primary transmitter and primary receiver on the performance of secondary networks is investigated. A two-hop amplify-and-forward (AF) relay protocol is employed, and then its end-to-end signal-to-interference-ratio (e2e-SIR) is defined. An upper bound on the cumulative distribution function (CDF) of this e2e-SIR is derived for the CP-SC system. Having investigated an asymptotic expression for the CDF, the asymptotic outage diversity and coding gain can be obtained. Also, under a total transmission constraint, a suboptimal power allocation (sub-OPA) is derived for approximately minimizing the asymptotic outage probability. Monte Carlo simulations verify the derived outage probability and its asymptotic diversity gain with and without power allocation. It is shown that the primary transmitter has a major impact on the secondary network performance. Importantly, it is observed that when the interference from the primary transmitter proportionally increases with the interference power constraint at the primary receiver, the spectrum-sharing system results in no diversity gain for the full range of the SIR.

Place, publisher, year, edition, pages
IEEE , 2012. Vol. 60, no 12, 6729-6734 p.
Keyword [en]
Cyclic prefixed single-carrier (CP-SC) cognitive relay system, primary user interference, spectrum-sharing, end-to-end signal-to-interference-ratio, outage probability, asymptotic outage diversity, optimal power allocation.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:bth-6885DOI: 10.1109/TSP.2012.2217138ISI: 000311805000053Local ID: oai:bth.se:forskinfo56F2B0B3C386404AC1257ACF003C30FEOAI: oai:DiVA.org:bth-6885DiVA: diva2:834439
Available from: 2013-09-16 Created: 2012-12-09 Last updated: 2017-03-14Bibliographically approved

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Duong, Quang Trung
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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
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  • de-DE
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