Hierarchical spectrum sharing using interference tweets

Emiliano Dall'Anese, Antonio G. Marques, Georgios B Giannakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spectrum sensing schemes focus on detecting active transmitters, but not incumbent passive receivers, which have nevertheless to be protected from excessive interference. The present paper advocates the notion of receiver map as a tool for unveiling areas where licensed receivers are likely to reside, and for limiting the interference accordingly. Receiver maps are tracked using a Bayesian approach, based on a one-bit message - here referred to as 'interference tweet' - broadcasted by the primary receiver whenever a communication disruption occurs due to interference. The resultant maps are utilized in a cross-layer resource allocation scheme, which is designed to optimize the performance of an underlay multi-hop cognitive radio network under long-term probability of interference constraints. Although non-convex, the problem exhibits zero duality gap, and it is optimally solved using a Lagrangian dual approach.

Original languageEnglish (US)
Title of host publication2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2013
Pages140-144
Number of pages5
DOIs
StatePublished - Oct 22 2013
Event2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2013 - Darmstadt, Germany
Duration: Jun 16 2013Jun 19 2013

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

Other

Other2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2013
CountryGermany
CityDarmstadt
Period6/16/136/19/13

Keywords

  • Cognitive radios
  • cross-layer design
  • receiver localization
  • recursive Bayesian estimation

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