Spectrum sharing on interference channels with a cognitive relay

Qiang Li, Ashish Pandharipande, See Ho Ting

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

6 Citaten (Scopus)


We consider a cognitive spectrum sharing system on an interference channel with a cognitive relay (IFC-CR) assisting both the primary and secondary users in forwarding their messages to the respective destination nodes. The CR uses a successive interference cancelation scheme to decode the primary and secondary messages after a first transmission phase. The CR performs power allocation and in the second transmission phase, forwards a linear weighted combination of the decoded primary and secondary messages. We demonstrate that with a properly designed power allocation, secondary spectrum sharing is achieved and at the same time a better performance can be achieved for the primary user than the case without spectrum sharing. The proposed spectrum sharing scheme further does not require any non-causal knowledge of the primary message at the secondary user or at the CR.

Originele taal-2Engels
Titel2013 IEEE Wireless Communications and Networking Conference, WCNC 2013
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Aantal pagina's6
ISBN van elektronische versie978-1-4673-5939-9
ISBN van geprinte versie978-1-4673-5938-2
StatusGepubliceerd - 21 aug 2013
Extern gepubliceerdJa
Evenement2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 - Shanghai, China
Duur: 7 apr 201310 apr 2013


Congres2013 IEEE Wireless Communications and Networking Conference, WCNC 2013

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