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Tipo di prodottoContributo in atti di convegno
TitoloDistributed Sensing of Interference Pattern in Dense Cooperative Wireless Networks
Anno di pubblicazione2015
FormatoElettronico
Autore/iG. Soatti, M. Nicoli, S. Savazzi, U. Spagnolini
Affiliazioni autoriPolitecnico di Milano, IEIIT-CNR
Autori CNR e affiliazioni
  • STEFANO SAVAZZI
Lingua/e
  • inglese
AbstractIn this paper we consider the problem of distributed spectrum sensing in multiple selforganizing networks sharing the same timefrequency resources. Each of the networks allocates autonomously radio resources so as to minimize mutual interference. Interference sensing is part of this cognitive framework where sensing devices, or secondary users (SUs), exchange local estimates to cooperatively recognize and track the overall time-varying interference patterns caused by primary users (PUs). PUs are assumed to perform periodic transmission over pre-defined (but unknown to SUs) time-frequency hopped resources. Detection by the SUs is based on local processing and iterated exchanges of local decision with neighbors, so as to enable global fusion of sensed data as for an equivalent centralized approach. We propose a weighted-average consensus algorithm nested within a decision-directed procedure for distributed Bayesian detection of the PU spectrum occupancy. The distributed approach provides the estimate of the complete interference pattern to each SU regardless of the incomplete visibility at each node. Performance analysis is carried out both on simulated and real scenarios with mixed coexisting WiFi and ZigBee devices.
Lingua abstractinglese
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Pagine da961
Pagine a966
Pagine totali5
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Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)
  • Scopus (Codice:2-s2.0-84947802371)
Parole chiaveBayes methods, cognitive radio, radio networks, radio spectrum management, radiofrequency interference, signal detection, WiFi devices, ZigBee devices, cognitive framework, decision directed procedure, dense cooperative wireless networks, distributed spectrum sensing, interference pattern, interference sensing, multiple selforganizing networks, time frequency hopped resources, time frequency resources, time varying interference patterns, weighted average consensus algorithm, IEEE 802.15 Standard
Link (URL, URI)http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7247300
Titolo convegno/congressoIEEE International Conference on Communication Workshop
Luogo convegno/congressoLondon
Data/e convegno/congressoJune 2015
RilevanzaInternazionale
RelazioneContributo
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Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR
  • ICT.P07.005.001 : Reti wireless integrate per accesso ad alta velocita'
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Distributed sensing of interference pattern in Dense Cooperative Wireless Networks
Descrizione: In this paper we consider the problem of distributed spectrum sensing in multiple selforganizing networks sharing the same timefrequency resources. Each of the networks allocates autonomously radio resources so as to minimize mutual interference. Interference sensing is part of this cognitive framework where sensing devices, or secondary users (SUs), exchange local estimates to cooperatively recognize and track the overall time-varying interference patterns caused by primary users (PUs).
Tipo documento: application/pdf