Average Throughput in AWGN Cognitive Fading Interference Channel with Multiple Secondary Pairs
2012 (English)In: Proceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2012, IEEE Computer Society, 2012, 158-162 p.Conference paper (Refereed)
We consider the additive white Gaussian noise (AWGN) cognitive fading interference channel consisting of one primary and multiple secondary transmitter-receiver pairs. The secondary transmitters have non-causal knowledge of the primary message. We find a tuple of achievable rates by utilizing the discrete superposition model (DSM), which is a simplified, deterministic channel model. The coding scheme devised for the DSM can be translated into a coding scheme for the AWGN model, where the rate achieved in the AWGN model is at most a constant gap below the rate achieved in the DSM. We then calculate the average throughput of the secondary pairs under the assumption of Rayleigh fading channels. The main result is that our scheme performs well in the weak interference regime. The sum-throughput increases with the number of secondary pairs.
Place, publisher, year, edition, pages
IEEE Computer Society, 2012. 158-162 p.
Radio Channels, Capacity
IdentifiersURN: urn:nbn:se:kth:diva-93756DOI: 10.4108/icst.crowncom.2012.248335ISI: 000310377900028ScopusID: 2-s2.0-84869408725ISBN: 978-1-936968-55-8OAI: oai:DiVA.org:kth-93756DiVA: diva2:523671
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Ntworks and Communications, CROWNCOM 2012;Stockholm; 18 June 2012 through 20 June 2012
FunderEU, FP7, Seventh Framework Programme, 248303ICT - The Next Generation
QC 201212142013-02-112012-04-252013-04-15Bibliographically approved