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Comparison of Underlay and Overlay Spectrum Sharing Strategies in MISO Cognitive Channels
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.
Dresden University of Technology. (Communications Laboratory)
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.ORCID-id: 0000-0001-9307-484X
Dresden University of Technology. (Communications Laboratory)
Vise andre og tillknytning
2012 (engelsk)Inngår i: 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), IEEE Computer Society, 2012, s. 224-229Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We consider an extension of the cognitive radio channel model in which the secondary transmitter has to obtain (“learn”) the primary message in a first phase rather than having non-causal knowledge of it. We propose an achievable rate region that combines elements of decode-and-forward relaying with coding for the pure cognitive radio channel model. Moreover, we find the choice of parameters that maximize the secondary rate under a primary rate constraint. Finally, we compare numerically the performance of our system to that of an underlay scheme that combines beamforming, rate splitting, and successive decoding. We observe that although the overlay design provides higher rates, the losses due to the first phase are quite severe. In fact, for the considered scenarios, cleverly designed underlay schemes can provide comparable performance.

sted, utgiver, år, opplag, sider
IEEE Computer Society, 2012. s. 224-229
Emneord [en]
Information-Theoretic Perspective, Interference Channels, Radio Networks, Capacity, Allocation
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-104532DOI: 10.4108/icst.crowncom.2012.248283ISI: 000310377900040Scopus ID: 2-s2.0-84869397177ISBN: 978-1-936968-55-8 (tryckt)OAI: oai:DiVA.org:kth-104532DiVA, id: diva2:564992
Konferanse
7th International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM),18-20 June 2012, Stockholm, Sweden
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 257626ICT - The Next Generation
Merknad

QC 20121114

Tilgjengelig fra: 2012-11-14 Laget: 2012-11-05 Sist oppdatert: 2013-04-15bibliografisk kontrollert

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