Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/46878
DC FieldValueLanguage
dc.contributor.authorPerez-Jimenez, Rafaelen_US
dc.contributor.authorRabadan, Jose A.en_US
dc.contributor.authorMelian, Victor M.en_US
dc.contributor.authorBetancor, Manuel J.en_US
dc.date.accessioned2018-11-23T09:05:43Z-
dc.date.available2018-11-23T09:05:43Z-
dc.date.issued1996en_US
dc.identifier.isbn0-7803-3692-5en_US
dc.identifier.urihttp://hdl.handle.net/10553/46878-
dc.description.abstractThis article presents a modified PPM modulation technique for infrared wireless LAN that improves the spectral efficiency of the system significantly. The resulting signal (improved PPM or IPPM), which is based on FQPSK IJF filters, is jitter- and ISI-free and can be recovered with any standard PPM receiver. In order to reduce the bandwidth a pulse-conformation system is added to the basic PPM emitter. It is based on a differential sub-codification of the original PPM signal. IPPM presents a waveform similar to the frequency response of a raised-cosine filter with /spl alpha/=0.25. This signal can be recovered with any standard PPM receiver. We have worked with a receiver that uses a maximum likelihood criterion with block decision. Measurements show that the bandwidth required for a 4-IPPM signal, with a rate of 2 Mb/s, is reduced to 3.6 MHz, for the same quality criterion of -21 dBr. The spectral efficiency for -21 dBr rises from 0.2 to 0.55 b/s/Hz. The performance of both PPM and IPPM modulation versus white Gaussian noise are similar (less than 1 dB difference). Both models are also equally sensitive to low frequency interference, results show that their behavior in a highly lit environment is similar. Their performance can be improved by the use of BDFE (block decision feedback equalizer) presenting also similar results. IPPM is more robust against jitter than PPM. Extensive simulation results show that the 4-IPPM scheme improves the performance against jitter of the basic 4-PPM 2 Mb/s around 3 dB for an error probability of 10/sup -6/.en_US
dc.languageengen_US
dc.relation.ispartofIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRCen_US
dc.sourceIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC,v. 1, p. 262-266en_US
dc.subject3307 Tecnología electrónicaen_US
dc.subject.otherInfrared spectraen_US
dc.subject.otherOptical receiversen_US
dc.subject.otherDecision feedback equalizersen_US
dc.subject.otherGaussian noiseen_US
dc.subject.otherInterferenceen_US
dc.subject.otherFrequency responseen_US
dc.subject.otherJitteren_US
dc.subject.otherFiltersen_US
dc.subject.otherBandwidthen_US
dc.titleImproved PPM modulations for high spectral efficiency IR-WLANen_US
dc.typeinfo:eu-repo/semantics/conferenceObjecten_US
dc.typeConferenceObjecten_US
dc.relation.conferenceProceedings of the 1996 7th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'96. Part 3 (of 3)
dc.identifier.doi10.1109/PIMRC.1996.567560en_US
dc.identifier.scopus0030406599-
dc.contributor.authorscopusid56044417600-
dc.contributor.authorscopusid6701924182-
dc.contributor.authorscopusid6508070652-
dc.contributor.authorscopusid6602990201-
dc.description.lastpage266en_US
dc.description.firstpage262en_US
dc.relation.volume1en_US
dc.investigacionIngeniería y Arquitecturaen_US
dc.type2Actas de congresosen_US
dc.utils.revisionen_US
dc.date.coverdateDiciembre 1996
dc.identifier.conferenceidevents121224
dc.identifier.ulpgces
item.fulltextSin texto completo-
item.grantfulltextnone-
crisitem.author.deptIDeTIC: División de Fotónica y Comunicaciones-
crisitem.author.deptIU para el Desarrollo Tecnológico y la Innovación-
crisitem.author.deptDepartamento de Señales y Comunicaciones-
crisitem.author.deptIDeTIC: División de Fotónica y Comunicaciones-
crisitem.author.deptIU para el Desarrollo Tecnológico y la Innovación-
crisitem.author.deptDepartamento de Señales y Comunicaciones-
crisitem.author.orcid0000-0002-8849-592X-
crisitem.author.orcid0000-0002-9994-4495-
crisitem.author.parentorgIU para el Desarrollo Tecnológico y la Innovación-
crisitem.author.parentorgIU para el Desarrollo Tecnológico y la Innovación-
crisitem.author.fullNamePérez Jiménez, Rafael-
crisitem.author.fullNameRabadán Borges, José Alberto-
crisitem.author.fullNameMelián Santana, Víctor Manuel-
crisitem.event.eventsstartdate15-10-1996-
crisitem.event.eventsenddate18-10-1996-
Appears in Collections:Actas de congresos
Show simple item record

Google ScholarTM

Check

Altmetric


Share



Export metadata



Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.