Please use this identifier to cite or link to this item: https://doi.org/10.1109/ICICS.2011.6174243
Title: Co-existence with ARQ-based primary system through cooperate-and-access spectrum sharing
Authors: Li, Q.
Ting, S.H.
Pandharipande, A.
Motani, M. 
Keywords: ARQ
Cognitive radios
relay
spectrum sharing
Issue Date: 2011
Source: Li, Q.,Ting, S.H.,Pandharipande, A.,Motani, M. (2011). Co-existence with ARQ-based primary system through cooperate-and-access spectrum sharing. ICICS 2011 - 8th International Conference on Information, Communications and Signal Processing : -. ScholarBank@NUS Repository. https://doi.org/10.1109/ICICS.2011.6174243
Abstract: We consider spectrum sharing in a cognitive radio network where a secondary user co-exists with an ARQ-based primary user. A spectrum sharing protocol is proposed where the secondary user switches between cooperation and access modes. In the cooperation mode, the secondary system serves as a relay to assist the primary transmission, and in return accumulates credits. The credits allow the secondary user to gain spectrum access by exploiting the ARQ redundant retransmission of the primary user in access mode. We show analytically that as long as the credits accumulated in cooperation mode compensate for the degradation in primary performance during access mode, the proposed protocol achieves an equal (or higher) average throughput for the primary system than the case without spectrum sharing, while providing spectrum access opportunities for the secondary user. © 2011 IEEE.
Source Title: ICICS 2011 - 8th International Conference on Information, Communications and Signal Processing
URI: http://scholarbank.nus.edu.sg/handle/10635/69624
ISBN: 9781457700309
DOI: 10.1109/ICICS.2011.6174243
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