Mostra el registre d'ítem simple
Multiantenna spectrum sensing for cognitive radio: overcoming noise uncertainty
dc.contributor.author | López Valcarce, Roberto |
dc.contributor.author | Vázquez Vilar, Gonzalo |
dc.contributor.author | Sala Álvarez, José |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2011-01-07T11:16:31Z |
dc.date.available | 2011-01-07T11:16:31Z |
dc.date.created | 2010 |
dc.date.issued | 2010 |
dc.identifier.citation | López, R.; Vázquez- Vilar, G.; Sala, J. Multiantenna spectrum sensing for cognitive radio: overcoming noise uncertainty. A: IAPR Workshop on Cognitive Information Processing. "2ond IAPR Workshop on Cognitive Information Processing". Elba: 2010, p. 310-315. |
dc.identifier.uri | http://hdl.handle.net/2117/10915 |
dc.description.abstract | Spectrum sensing is a key ingredient of the dynamic spectrum access paradigm, but it needs powerful detectors operating at SNRs well below the decodability levels of primary signals. Noise uncertainty poses a significant challenge to the development of such schemes, requiring some degree of diversity (spatial, temporal, or in distribution) for identifiability of the noise level. Multiantenna detectors exploit spatial independence of receiver thermal noise. We review this class of schemes and propose a novel detector trading off performance and complexity. However, most of these methods assume that the noise power, though unknown, is the same at all antennas. As it turns out, calibration errors have a substantial impact on these detectors. Another novel detector is proposed, based on an approximation to the Generalized Likelihood Ratio, outperforming previous schemes for uncalibrated multiantenna receivers. |
dc.format.extent | 6 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Antenes i agrupacions d'antenes |
dc.subject.lcsh | Antennas (Electronics) |
dc.title | Multiantenna spectrum sensing for cognitive radio: overcoming noise uncertainty |
dc.type | Conference report |
dc.subject.lemac | Antenes (Electrònica) |
dc.contributor.group | Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.conference.iet.unipi.it/cip2010/index.php |
dc.rights.access | Open Access |
local.identifier.drac | 2561965 |
dc.description.version | Postprint (published version) |
local.citation.author | López, R.; Vázquez- Vilar, G.; Sala, J. |
local.citation.contributor | IAPR Workshop on Cognitive Information Processing |
local.citation.pubplace | Elba |
local.citation.publicationName | 2ond IAPR Workshop on Cognitive Information Processing |
local.citation.startingPage | 310 |
local.citation.endingPage | 315 |