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Filter-bank OFDM transceivers for 5G and beyond

Abstract : 5G paves the way to service-centric adaptation radio link. The transmitted signal is now configured according to the service it provides and the propagation impairments it suffers from. However, in 5G the multi-service multiplexing leads to a poor bandwidth use. Indeed, CP-OFDM is responsible for large out-of-band emission and therefore large guard bands are required between bands of different numerologies. In this paper, the authors investigate the use of filter-bank based waveforms as an alternative of legacy CP-OFDM. Such waveforms prove to be an enabling technology for an efficient multi-service multiplexing. Moreover, it is possible to configure a unique filtering stage, i.e. the PolyPhase-Network, to simultaneously address different numerologies in the same system bandwidth. This result would ease the support of real-time numerology adaptation as one base station could provide different services in the same cell. This paper is rather dedicated on the study of BF-OFDM which is a filter-bank based waveform which relies on a 5G NR OFDM receiver. Nonetheless the waveform provides great results on the considered evaluation scenarios for a reasonable complexity increase.
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Contributor : Didier Le Ruyet <>
Submitted on : Friday, February 7, 2020 - 10:53:22 AM
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David Demmer, Rostom Zakaria, Jean-Baptiste Doré, Robin Gerzaguet, Didier Le Ruyet. Filter-bank OFDM transceivers for 5G and beyond. 2018 52nd Asilomar Conference on Signals, Systems, and Computers, Oct 2018, Pacific Grove, France. pp.1057-1061, ⟨10.1109/ACSSC.2018.8645104⟩. ⟨hal-02470279⟩



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