Comparison of different filter-bank based multicarrier systems with fractionally spaced equalisation

Amr A. Nagy; Stephan Weiss

Comparison of different filter-bank based multicarrier systems with fractionally spaced equalisation

Amr A. Nagy, Stephan Weiss

Electronic And Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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Abstract

This paper compares two different filter bank multi carrier (FBMC) modulations: a critically sampled and therefore spectral maximally efficient FBMC orthogonal quadrature amplitude modulation (OQAM) approach, as well as an over sampled (OS)-FBMC system. Under a dispersive channel, FBMC/OQAM and OS-FBMC require equalisation and timing synchronisation, which here is accomplished by a fractionally spaced equaliser updated by a concurrent constant modulus and decision-directed algorithm. Simulation demonstrate that FBMC/OQAM is more difficult to equalise particularly at lower SNR, since its additional CCI terms amplify the equalisation algorithm’s gradient noise.

Original language	English
Title of host publication	11th IMA International Conference on Mathematics in Signal Processing
Place of Publication	Southend-on-sea
Pages	1-4
Number of pages	4
Publication status	Published - 12 Dec 2016
Event	11th IMA International Conference on Mathematics in Signal Processing - IET Austin Court, Birmingham, United Kingdom Duration: 12 Dec 2016 → 14 Dec 2016 http://www.ima.org.uk/conferences/conferences_calendar/11th_maths_in_signal_processing.html

Conference

Conference	11th IMA International Conference on Mathematics in Signal Processing
Country	United Kingdom
City	Birmingham
Period	12/12/16 → 14/12/16
Internet address	http://www.ima.org.uk/conferences/conferences_calendar/11th_maths_in_signal_processing.html

Keywords

filter bank multicarrier modulations
orthogonal quadrature amplitude modulation
oversampled
equalisation
timing synchronisation

Access to Document

Nagy-Weiss-IMAMSP2016-Comparison-of-different-filter-bank-based-multicarrier-systemsAccepted author manuscript, 92.8 KB

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Cite this

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title = "Comparison of different filter-bank based multicarrier systems with fractionally spaced equalisation",

abstract = "This paper compares two different filter bank multi carrier (FBMC) modulations: a critically sampled and therefore spectral maximally efficient FBMC orthogonal quadrature amplitude modulation (OQAM) approach, as well as an over sampled (OS)-FBMC system. Under a dispersive channel, FBMC/OQAM and OS-FBMC require equalisation and timing synchronisation, which here is accomplished by a fractionally spaced equaliser updated by a concurrent constant modulus and decision-directed algorithm. Simulation demonstrate that FBMC/OQAM is more difficult to equalise particularly at lower SNR, since its additional CCI terms amplify the equalisation algorithm{\textquoteright}s gradient noise.",

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N2 - This paper compares two different filter bank multi carrier (FBMC) modulations: a critically sampled and therefore spectral maximally efficient FBMC orthogonal quadrature amplitude modulation (OQAM) approach, as well as an over sampled (OS)-FBMC system. Under a dispersive channel, FBMC/OQAM and OS-FBMC require equalisation and timing synchronisation, which here is accomplished by a fractionally spaced equaliser updated by a concurrent constant modulus and decision-directed algorithm. Simulation demonstrate that FBMC/OQAM is more difficult to equalise particularly at lower SNR, since its additional CCI terms amplify the equalisation algorithm’s gradient noise.

AB - This paper compares two different filter bank multi carrier (FBMC) modulations: a critically sampled and therefore spectral maximally efficient FBMC orthogonal quadrature amplitude modulation (OQAM) approach, as well as an over sampled (OS)-FBMC system. Under a dispersive channel, FBMC/OQAM and OS-FBMC require equalisation and timing synchronisation, which here is accomplished by a fractionally spaced equaliser updated by a concurrent constant modulus and decision-directed algorithm. Simulation demonstrate that FBMC/OQAM is more difficult to equalise particularly at lower SNR, since its additional CCI terms amplify the equalisation algorithm’s gradient noise.

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KW - equalisation

KW - timing synchronisation

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