Performance analysis of coded secondary relaying in overlay cognitive radio networks
2012 (English)In: 2012 IEEE Wireless Communications and Networking Conference, WCNC, IEEE Communications Society, 2012, 294-299 p.Conference paper (Refereed)
We study the error and diversity-multiplexing tradeoff (DMT) performance of a (secondary) multi-user relay network, where a class of finite field network codes are applied in the relays to efficiently provide spatial diversity. To eliminate spectral efficiency loss induced by half-duplex limitation we adopt the cognitive radio overlay spectrum sharing concept and consider aligning the relays' operation with that of a primary system. To compensate the interference introduced by the secondary relaying, the secondary destination also transmits the primary signals to boost the signal power of the primary system. We also consider exploiting Automatic Repeat Request (ARQ) feedback signals from the secondary destination to minimize the energy consumption of the secondary system. In addition, by allowing multiple secondary sources to transmit non-orthogonally, the performance can be further enhanced.
Place, publisher, year, edition, pages
IEEE Communications Society, 2012. 294-299 p.
, IEEE Wireless Communications and Networking Conference. Proceedings, ISSN 1525-3511
Diversity-Multiplexing Tradeoff, Cooperative Diversity, Wireless Networks, Efficient Protocols, Channels
IdentifiersURN: urn:nbn:se:kth:diva-101558DOI: 10.1109/WCNC.2012.6214308ISI: 000324580700056ScopusID: 2-s2.0-84864366620ISBN: 978-146730437-5OAI: oai:DiVA.org:kth-101558DiVA: diva2:548562
2012 IEEE Wireless Communications and Networking Conference, WCNC 2012; Paris; 1 April 2012 through 4 April 2012
FunderICT - The Next Generation
QC 201208312012-08-312012-08-302013-11-25Bibliographically approved