Interference mitigation using spectrum sensing and dynamic frequency hopping

Mohammad J Abdel Rahman, Marwan M Krunz, Richard Erwin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

Wireless communications are prone to both unintentional and intentional RF interference. Such interference has significant impact on the reliability of packet transmissions. In this paper, we consider interference mitigation in frequency hopping (FH) systems. We employ cognitive radios (CRs) for proactive interference sensing in such systems. Through this proactive approach, we propose a scheme for dynamic adjustment of the FH sequence. Our protocol, called SSDFH, relies on exploiting the spectrum sensing capabilities of CRs for proactive detection of channel quality. We analyze the characteristics of the proposed SSDFH using a continuous-time Markov chain framework. Level crossing rate (LCR) analysis is used to determine the transition rates for the Markov chain, which are then used to measure the 'channel stability,' a metric that reflects the freshness of sensed channel interference. The selection of different protocol parameters is studied by means of analysis. In particular, we provide a numerical procedure for determining the 'optimal' total sensing time that minimizes the probability of 'black holes.' We run simulations to study the performance of our proposed protocol.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Communications
Pages4421-4425
Number of pages5
DOIs
StatePublished - 2012
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada
Duration: Jun 10 2012Jun 15 2012

Other

Other2012 IEEE International Conference on Communications, ICC 2012
CountryCanada
CityOttawa, ON
Period6/10/126/15/12

Fingerprint

Frequency hopping
Cognitive radio
Markov processes
Communication

Keywords

  • cognitive radio
  • continuous-time Markov chains
  • dynamic frequency hopping
  • Spectrum sensing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Rahman, M. J. A., Krunz, M. M., & Erwin, R. (2012). Interference mitigation using spectrum sensing and dynamic frequency hopping. In IEEE International Conference on Communications (pp. 4421-4425). [6363744] https://doi.org/10.1109/ICC.2012.6363744

Interference mitigation using spectrum sensing and dynamic frequency hopping. / Rahman, Mohammad J Abdel; Krunz, Marwan M; Erwin, Richard.

IEEE International Conference on Communications. 2012. p. 4421-4425 6363744.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Rahman, MJA, Krunz, MM & Erwin, R 2012, Interference mitigation using spectrum sensing and dynamic frequency hopping. in IEEE International Conference on Communications., 6363744, pp. 4421-4425, 2012 IEEE International Conference on Communications, ICC 2012, Ottawa, ON, Canada, 6/10/12. https://doi.org/10.1109/ICC.2012.6363744
Rahman MJA, Krunz MM, Erwin R. Interference mitigation using spectrum sensing and dynamic frequency hopping. In IEEE International Conference on Communications. 2012. p. 4421-4425. 6363744 https://doi.org/10.1109/ICC.2012.6363744
Rahman, Mohammad J Abdel ; Krunz, Marwan M ; Erwin, Richard. / Interference mitigation using spectrum sensing and dynamic frequency hopping. IEEE International Conference on Communications. 2012. pp. 4421-4425
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