Efficient and low complexity optimized feature spectrum sensing with receiver offsets

Ikedieze Gabriel Anyim, John Chiverton, Misha Filip, Abdulkarim Tawfik

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

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Abstract

Spectrum awareness is an important function in the context of cognitive radio systems. It determines the presence or absence of free channels in the spectrum and identifies free channels for secondary users. Cyclostationary Feature Detection is an example of a spectrum awareness technique which involves the detection of signals based on their features such as cyclic frequencies, symbol rates, carrier frequencies and modulation types. It detects signals at very low signal-to-noise ratios. However there are performance degrading constraints such as cyclic and sampling clock offsets that can occur at the receiver end. These offsets result from local oscillator frequency offsets, Doppler effects and jitter. We propose an efficient low complexity multi-slot cyclostationary feature detector that reduces the effects of these constraints through an offline optimization approach that produces the number and size of slot and fast Fourier transform to be used. These slots and fast Fourier transforms are used to show the reduction of these offsets and the detection performance compared for the case of different signal to noise ratios in the presence or absence of the receiver offsets. Also, the complexity of the model is compared with the complexity of the conventional implementation and it shows significant reductions in the number of required computations.
Original languageEnglish
Title of host publication2018 IEEE Wireless Communications and Networking Conference
PublisherIEEE
Pages2441-2446
Number of pages6
ISBN (Electronic)978-1-5386-1734-2
ISBN (Print)978-1-5386-1735-9
DOIs
Publication statusPublished - 11 Jun 2018
EventIEEE Wireless Communications and Networking Conference: Leading the Way to 5G and Beyond - Barcelona, Spain
Duration: 15 Apr 201818 Apr 2018
Conference number: 16
http://wcnc2018.ieee-wcnc.org

Publication series

NameIEEE WCNC Proceedings Series
PublisherIEEE
ISSN (Electronic)1558-2612

Conference

ConferenceIEEE Wireless Communications and Networking Conference
Abbreviated titleIEEE WCNC
CountrySpain
CityBarcelona
Period15/04/1818/04/18
Internet address

Keywords

  • cognitive radio
  • spectrum sensing
  • cyclostationary
  • low complexity
  • optimization

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