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dc.contributor.authorHussain, Syed Imtiaz
dc.contributor.authorAlouini, Mohamed-Slim
dc.contributor.authorQaraqe, Khalid A.
dc.contributor.authorHasna, Mazen Omar
dc.date.accessioned2015-08-04T07:04:54Z
dc.date.available2015-08-04T07:04:54Z
dc.date.issued2012-09
dc.identifier.citationHussain, S. I., Alouini, M.-S., Qaraqe, K., & Hasna, M. (2012). Outage analysis of selective cooperation in underlay cognitive networks with fixed gain relays and primary interference modeling. 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC). doi:10.1109/pimrc.2012.6362529
dc.identifier.isbn9781467325691
dc.identifier.doi10.1109/PIMRC.2012.6362529
dc.identifier.urihttp://hdl.handle.net/10754/564602
dc.description.abstractSelective cooperation is a well investigated technique in non-cognitive networks for efficient spectrum utilization and performance improvement. However, it is still a nascent topic for underlay cognitive networks. Recently, it was investigated for underlay networks where the secondary nodes were able to adapt their transmit power to always satisfy the interference threshold to the primary users. This is a valid assumption for cellular networks but many non-cellular devices have fixed transmit powers. In this situation, selective cooperation poses a more challenging problem and performs entirely differently. In this paper, we extend our previous work of selective cooperation based on either hop's signal to noise ratio (SNR) with fixed gain and fixed transmit power relays in an underlay cognitive network. This work lacked in considering the primary interference over the cognitive network and presented a rather idealistic analysis. This paper deals with a more realistic system model and includes the effects of primary interference on the secondary transmission. We first derive end-to-end signal to interference and noise ratio (SINR) expression and the related statistics for a dual-hop relay link using asymptotic and approximate approaches. We then derive the statistics of the selected relay link based on maximum end-to-end SINR among the relays satisfying the interference threshold to the primary user. Using this statistics, we derive closed form asymptotic and approximate expressions for the outage probability of the system. Analytical results are verified through simulations. It is concluded that selective cooperation in underlay cognitive networks performs better only in low to medium SNR regions. © 2012 IEEE.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectcognitive radio
dc.subjectoverlay networks
dc.subjectrelay selection etc
dc.subjectunderlay networks
dc.subjectuser cooperation
dc.titleOutage analysis of selective cooperation in underlay cognitive networks with fixed gain relays and primary interference modeling
dc.typeConference Paper
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentCommunication Theory Lab
dc.identifier.journal2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)
dc.conference.date9 September 2012 through 12 September 2012
dc.conference.name2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012
dc.conference.locationSydney, NSW
dc.contributor.institutionTexas AandM University at Qatar, Doha, Qatar
dc.contributor.institutionQatar University, Doha, Qatar
kaust.personAlouini, Mohamed-Slim


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