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Coherent detector for pseudo-FSK backscatter under ambient constant envelope illumination

Vougioukas Georgios, Alevizos Panagiotis, Bletsas Aggelos

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URIhttp://purl.tuc.gr/dl/dias/8B85E9CA-7A53-4857-BD31-876FB5C127C0-
Identifierhttps://doi.org/10.1109/SPAWC.2018.8445935-
Identifierhttps://ieeexplore.ieee.org/document/8445935-
Languageen-
Extent5 pagesen
TitleCoherent detector for pseudo-FSK backscatter under ambient constant envelope illuminationen
CreatorVougioukas Georgiosen
CreatorΒουγιουκας Γεωργιοςel
CreatorAlevizos Panagiotisen
CreatorΑλεβιζος Παναγιωτηςel
CreatorBletsas Aggelosen
CreatorΜπλετσας Αγγελοςel
PublisherInstitute of Electrical and Electronics Engineersen
Content SummaryThis work studies ambient backscatter, where the tag utilizes a frequency-shifted form of on-off keying (OOK), which may be coined as pseudo-frequency shift keying (pseudo-FSK). Such scheme, offers the possibility of simple, frequency-domain multiple access (due to FSK), by appropriate selection of the switching frequencies among (possibly receiverless) tags, while reserving bandwidth (due to OOK). A constant envelope-modulated ambient signal is assumed to illuminate the tag, resembling signals from (analog) FM radio, (digital) minimum-shift keying (MSK), or phase-shift keying (PSK) broadcasting stations. Fully coherent, maximum likelihood (ML) detection is derived for tag information, without estimating or detecting the ambient signal; instead, the law of large numbers is exploited, in conjunction with channel estimation techniques, even though the ambient unknown signal changes between successive tag bits. Closed-form expression for the probability of error is also given and simulations verify theoretical results. Ambient is a special case of bistatic backscatter; thus, useful design principles for ambient systems can stem from the bistatic backscatter literature. en
Type of ItemΠλήρης Δημοσίευση σε Συνέδριοel
Type of ItemConference Full Paperen
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2019-06-06-
Date of Publication2018-
SubjectAmbienten
SubjectBackscatter radioen
SubjectDetectionen
SubjectRFIDen
SubjectAmplitude shift keyingen
SubjectBackscatteringen
SubjectDigital radioen
Bibliographic CitationG. Vougioukas, P. N. Alevizos and A. Bletsas, "Coherent detector for pseudo-FSK backscatter under ambient constant envelope illumination," in IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, 2018. doi: 10.1109/SPAWC.2018.8445935en

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