dc.contributor.authorLu, Wei Dang.
dc.contributor.authorGong, Yi.
dc.contributor.authorTing, See Ho.
dc.contributor.authorWu, Xuan Li.
dc.contributor.authorZhang, Nai Tong.
dc.identifier.citationLu, W. D., Gong, Y., Ting, S. H., Wu, X. L., & Zhang, N. T. (2012). Cooperative OFDM Relaying for Opportunistic Spectrum Sharing: Protocol Design and Resource Allocation. IEEE Transactions on Wireless Communications, 11(6), 2126-2135.en_US
dc.description.abstractIn this paper, we propose an opportunistic spectrum sharing protocol that exploits the situation when the primary system is incapable of supporting its target transmission rate. Specifically, the secondary system tries to help the primary system to achieve its target rate via two-phase cooperative OFDM relaying, where the secondary system acts as an amplify-and-forward relay for the primary system by allocating a fraction of its subcarriers to forward the primary signal. At the same time, the secondary system uses the remaining subcarriers to transmit its own signal, and thus gaining opportunistic spectrum access. As a part of the protocol, if the primary system finds that outage will occur even when the secondary system serves as a pure relay, the primary system will cease transmission and the secondary system will be granted access to the primary spectrum. We study the joint optimization of the set of subcarriers used for cooperation, subcarrier pairing, and subcarrier power allocation such that the transmission rate of the secondary system is maximized, while helping the primary system, as a higher priority, to achieve its target rate. Simulation results demonstrate the performance of the proposed spectrum sharing protocol as well as the win-win solution for the primary and secondary systems.en_US
dc.relation.ispartofseriesIEEE transactions on wireless communicationsen_US
dc.rights© 2012 IEEE.en_US
dc.subjectDRNTU::Engineering::Electrical and electronic engineering
dc.titleCooperative OFDM relaying for opportunistic spectrum sharing : protocol design and resource allocationen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US

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