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AuthorHussain S.I.
AuthorAbdallah M.M.
AuthorAlouini M.-S.
AuthorHasna , Mazen
AuthorQaraqe K.
Available date2022-04-26T11:06:56Z
Publication Date2011
Publication NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
ResourceScopus
Identifierhttp://dx.doi.org/10.1109/SPAWC.2011.5990375
URIhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-80052669886&doi=10.1109%2fSPAWC.2011.5990375&partnerID=40&md5=833137a4a0e6e97d4cff6d952bd850ea
URIhttp://hdl.handle.net/10576/30543
AbstractUnderlay cognitive networks should follow strict interference thresholds to operate in parallel with primary networks. This constraint limits their transmission power and eventually the area of coverage. Therefore, it is very likely that the underlay networks will make use of relays to transmit signals to the distant secondary users. In this paper, we propose a secondary relay selection scheme which maximizes the end-to-end signal to noise ratio (SNR) for the secondary link while keeping the interference levels to the primary network below a certain threshold. We derive closed form expressions for the probability density function (PDF) of the SNR at the secondary destination, average bit error probability and outage probability. Analytical results are verified through simulations which also give insight about the benefits and tradeoffs of the selective cooperation in underlay cognitive networks. It is shown that, in contrast to non-cognitive selective cooperation, this scheme performs better in low SNR region for cognitive networks.
SponsorQatar National Research Fund
Languageen
PublisherIEEE
SubjectAnalytical results
Average bit error probability
Closed-form expression
Cognitive network
Cognitive radio
Constraint limits
Interference level
Low SNR
Outage probability
Performance analysis
Probability density function (pdf)
Rayleigh channel
Relay selection
relay selection etc.
Transmission power
Underlay networks
User cooperation
Bit error rate
Overlay networks
Probability
Probability density function
Signal processing
Signal to noise ratio
Wireless telecommunication systems
Computer simulation
TitlePerformance analysis of selective cooperation in underlay cognitive networks over Rayleigh channels
TypeConference Paper
Pagination116-120
dc.accessType Abstract Only


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