TY - GEN
T1 - Opportunistic transmitter selection for selfless overlay cognitive radios
AU - Shaqfeh, Mohammad
AU - Zafar, Ammar
AU - Alnuweiri, Hussein
AU - Alouini, Mohamed Slim
PY - 2013
Y1 - 2013
N2 - We propose an opportunistic strategy to grant channel access to the primary and secondary transmitters in causal selfless overlay cognitive radios over block-fading channels. The secondary transmitter helps the primary transmitter by relaying the primary messages opportunistically, aided by a buffer to store the primary messages temporarily. The optimal channel-aware transmitter- selection strategy is the solution of the maximization of the average secondary rate under the average primary rate requirement and the buffer stability constraints. Numerical results demonstrate the gains of the proposed opportunistic selection strategy.
AB - We propose an opportunistic strategy to grant channel access to the primary and secondary transmitters in causal selfless overlay cognitive radios over block-fading channels. The secondary transmitter helps the primary transmitter by relaying the primary messages opportunistically, aided by a buffer to store the primary messages temporarily. The optimal channel-aware transmitter- selection strategy is the solution of the maximization of the average secondary rate under the average primary rate requirement and the buffer stability constraints. Numerical results demonstrate the gains of the proposed opportunistic selection strategy.
KW - Overlay Cognitive Radio
KW - block-fading channels
KW - buffer-aided relaying
KW - opportunistic scheduling
UR - http://www.scopus.com/inward/record.url?scp=84901262940&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2013.6810543
DO - 10.1109/ACSSC.2013.6810543
M3 - Conference contribution
AN - SCOPUS:84901262940
SN - 9781479923908
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1488
EP - 1492
BT - Conference Record of the 47th Asilomar Conference on Signals, Systems and Computers
PB - IEEE Computer Society
T2 - 2013 47th Asilomar Conference on Signals, Systems and Computers
Y2 - 3 November 2013 through 6 November 2013
ER -