Novel Filter Bank Based Cooperative Spectrum Sensing Under RF Impairments and Channel Fading Beyond 5G Cognitive Radios

Sener Dikmese, Kishor Lamichhane, Markku Renfors

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1 Citation (Scopus)
6 Downloads (Pure)

Abstract

Cognitive radio (CR) technology with dynamic spectrum management capabilities is widely advocated for utilizing effectively the unused spectrum resources. The main idea behind CR technology is to trigger secondary communications to utilize the unused spectral resources. However, CR technology heavily relies on spectrum sensing techniques which are applied to estimate the presence of primary user (PU) signals. This paper mostly focuses on novel analysis filter bank (AFB) based cooperative spectrum sensing (CSS) algorithms to detect the spectral holes in the interesting part of the radio spectrum. To counteract the practical wireless channel effects, collaborative subband based approaches of PU signal sensing are studied. CSS has the capability to eliminate the problems of both hidden nodes and fading multipath channels. FFT and AFB based receiver side sensing methods are applied for OFDM waveform and filter bank based multicarrier (FBMC) waveform, respectively. Subband energies are then applied for enhanced energy detection (ED) based CSS methods. Our special focus is on sensing potential spectral gaps close to relatively strong primary users, considering also the effects of spectral regrowth due to power amplifier nonlinearities. The study shows that AFB based CSS with FBMC waveform improves the performance significantly.

Original languageEnglish
Title of host publicationCognitive Radio-Oriented Wireless Networks - 14th EAI International Conference, CrownCom 2019, Proceedings
EditorsFaouzi Bader, Pawel Kryszkiewicz, Nikos Dimitriou, Adrian Kliks, Michal Sybis, Dionysia Triantafyllopoulou, Carlos E. Caicedo, Aydin Sezgin
PublisherSpringer Verlag
Pages45-58
Number of pages14
ISBN (Print)9783030257477
DOIs
Publication statusPublished - 2019
Publication typeA4 Article in a conference publication
EventEAI International Conference on Cognitive Radio-Oriented Wireless Networks - Poznan, Poland
Duration: 11 Jun 201912 Jun 2019

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
Volume291
ISSN (Print)1867-8211

Conference

ConferenceEAI International Conference on Cognitive Radio-Oriented Wireless Networks
Country/TerritoryPoland
CityPoznan
Period11/06/1912/06/19

Keywords

  • Cognitive radio
  • Energy detector
  • FFT/AFB based cooperative spectrum sensing
  • Frequency selective channel
  • Frequency selectivity
  • OFDM and FBMC
  • PA non-linearity

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Computer Networks and Communications

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