Modulation and SNR Optimization for Achieving Energy-Efficient Communications over Short-Range Fading Channels

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dc.contributor.authorRosas, Fernando
dc.contributor.authorOberli, Christian
dc.date.accessioned2024-01-10T12:40:32Z
dc.date.available2024-01-10T12:40:32Z
dc.date.issued2012
dc.description.abstractIt is commonly assumed that the energy consumption of wireless communications is minimized when low-order modulations such as BPSK are used. Nevertheless, the literature provides some evidence that low-order modulations are suboptimal for short transmission distances. No complete analysis on how the modulation size and transmission power must be chosen in order to achieve energy-efficient communications over fading channels has been reported so far. In this paper we provide this analysis by presenting a model that determines the energy consumed per payload bit transferred without error over fading channels of various statistics.
dc.description.abstractWe find that each modulation scheme has a single optimal signal-to-noise ratio (SNR) at which the energy consumption is minimized. The optimal SNR and the minimal energy consumption are larger for channels with less favorable error statistics. We also find that, if each modulations is operated at its optimal SNR, BPSK and QPSK are the optimal choices for long transmission distances, but as the transmission distance shortens the optimal modulation size grows to 16-QAM and even to 64-QAM. This result leads to showing that for short-range communications the lifetime of a typical low-power transceiver can be up to 500% longer by selecting the optimal constellation instead of BPSK.
dc.description.funderCONICYT Chile
dc.fechaingreso.objetodigital2024-05-28
dc.format.extent10 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1109/TWC.2012.100112.111275
dc.identifier.eissn1558-2248
dc.identifier.issn1536-1276
dc.identifier.urihttps://doi.org/10.1109/TWC.2012.100112.111275
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77321
dc.identifier.wosidWOS:000312836900008
dc.information.autorucIngeniería;Oberli C ;S/I;63125
dc.information.autorucIngeniería;Rosas F;S/I;17051
dc.issue.numero12
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final4295
dc.pagina.inicio4286
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.revistaIEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
dc.rightsacceso restringido
dc.subjectEnergy-efficiency
dc.subjectcross-layer design
dc.subjectfading channels
dc.subjectmodulation optimization
dc.subjectenergy consumption modeling
dc.subjectwireless sensors networks
dc.subjectlow-power communications
dc.subjectMINIMIZATION
dc.titleModulation and SNR Optimization for Achieving Energy-Efficient Communications over Short-Range Fading Channels
dc.typeartículo
dc.volumen11
sipa.codpersvinculados63125
sipa.codpersvinculados17051
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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