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dc.contributor.authorVillares Piera, Nemesio Javier
dc.contributor.authorRey Micolau, Francesc
dc.contributor.authorSala Álvarez, José
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2017-02-21T12:12:21Z
dc.date.issued2016
dc.identifier.citationVillares, J., Rey, F., Sala, J. Optimum energy allocation for massive spread-spectrum multiple access in networks of uncoordinated energy-limited terminals. A: IEEE International Workshop on Signal Processing Advances in Wireless Communications. "2016 IEEE 17th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC).Proceedings". Edinburg: Institute of Electrical and Electronics Engineers (IEEE), 2016, p. 1-6.
dc.identifier.isbn978-1-5090-1749-2
dc.identifier.urihttp://hdl.handle.net/2117/101309
dc.description.abstractThis paper derives the energy allocation policy that maximizes the aggregate spectral efficiency of an uncoordinated spread-spectrum multiple access network operating in the large-user regime and subject to a longterm per-user average energy constraint. Focusing on a network of autonomous energy-limited devices, we consider that the receiver operates under noise-dominant conditions and that every transmitter is able to estimate accurately its own slowly time-varying channel with no feedback from the receiver. The aggregate spectral efficiency is derived in terms of the statistical distribution of the channel power gains and of the Packet Error Rate (PER) curve of the common modulation and error correcting code employed by all users. Using Variational Calculus, we obtain a closed-form expression for the optimum energy profile at low average Es/N0 and prove that the aggregate spectral efficiency converges to a non-vanishing value if the user population is large and terminals implement an uncoordinated admission control based on the known PER curve.
dc.format.extent6 p.
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectÀrees temàtiques de la UPC::Energies::Eficiència energètica
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject.lcshEnergy consumption
dc.subject.lcshSpread spectrum communications
dc.subject.otherSpread spectrum communication
dc.subject.otherStatistical analysis
dc.subject.otherTime-varying channels
dc.subject.otherOptimum energy allocation
dc.subject.otherMassive spread-spectrum multiple access
dc.subject.otherUncoordinated energy-limited terminals
dc.subject.otherEnergy allocation policy
dc.subject.otherLong-term per-user average energy constraint
dc.subject.otherAutonomous energy-limited devices
dc.subject.otherTime-varying channel
dc.subject.otherSpectral efficiency
dc.subject.otherStatistical distribution
dc.subject.otherChannel power gains
dc.subject.otherPacket error rate curve
dc.subject.otherPER curve
dc.subject.otherError correcting code
dc.subject.otherVariational calculus
dc.subject.otherClosed-form expression
dc.subject.otherUncoordinated admission control
dc.titleOptimum energy allocation for massive spread-spectrum multiple access in networks of uncoordinated energy-limited terminals
dc.typeConference report
dc.subject.lemacEnergia -- Consum
dc.subject.lemacComunicacions d'espectre eixamplat
dc.contributor.groupUniversitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.identifier.doi10.1109/SPAWC.2016.7536844
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://ieeexplore.ieee.org/document/7536844/?arnumber=7536844
dc.rights.accessRestricted access - publisher's policy
drac.iddocument18852671
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
upcommons.citation.authorVillares, J., Rey, F., Sala, J.
upcommons.citation.contributorIEEE International Workshop on Signal Processing Advances in Wireless Communications
upcommons.citation.pubplaceEdinburg
upcommons.citation.publishedtrue
upcommons.citation.publicationName2016 IEEE 17th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC).Proceedings
upcommons.citation.startingPage1
upcommons.citation.endingPage6


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