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

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Nagy, Amr A. and Weiss, Stephan; (2016) Comparison of different filter-bank based multicarrier systems with fractionally spaced equalisation. In: 11th IMA International Conference on Mathematics in Signal Processing. Institute of Mathematics and its Applications, GBR, pp. 1-4.

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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.

ORCID iDs

Nagy, Amr A. and Weiss, Stephan ORCID logoORCID: https://orcid.org/0000-0002-3486-7206;
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