Energy-efficient wideband transceiver with per-band equalisation and synchronisation

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Anis, Vianney and Delaosa, Connor and Crockett, Louise H. and Weiss, Stephan (2018) Energy-efficient wideband transceiver with per-band equalisation and synchronisation. In: IEEE Wireless Communications and Networking Conference, 2018-04-15 - 2018-04-18.

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Abstract

To emit in the TV white space (TVWS) spectrum, the regulator has requested very strict spectral masks, which can be fulfilled using a FFT-modulated filter-bank multi-carrier system (FBMC) to extract one or several TVWS channels in the 470--790MHz range. Such a system reduces the channel dispersion, but even with near-perfectly reconstructing filter bank, the need for equalisation and synchronisation remains. In this work, we propose a per-band equalisation and synchronisation approach, performed by a constant modulus algorithms running concurrently with a direction-directed adaptation process for faster convergence and reduced phase ambiguity. We compare symbol- and fractionally-spaced versions, and investigate their fixed-point implementation on an FPGA. We compare the performance of the different systems in terms of mean squared error, computational cost, and robustness towards noise.

ORCID iDs

Anis, Vianney, Delaosa, Connor, Crockett, Louise H. ORCID logoORCID: https://orcid.org/0000-0003-4436-0254 and Weiss, Stephan ORCID logoORCID: https://orcid.org/0000-0002-3486-7206;
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