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ThinkMind // International Journal On Advances in Telecommunications, volume 8, numbers 3 and 4, 2015 // View article tele_v8_n34_2015_3


Using SC-FDMA Waveform in a Shared Spectrum Context with High Efficiency

Authors:
Benjamin Ros
Sonia Cazalens
Xavier Fouchet
Christelle Boustie

Keywords: shared spectrum; integrated satellite terrestrial system; intentional jammer; (Extended and Weighted) Single-Carrier Frequency Division Multiple Access; amplifier non linearity; Input Multiplexer

Abstract:
The trend for future communication systems is the efficient sharing of frequency bands on one hand (Cognitive Radio) and the emergence of satellite/terrestrial integrated systems, which is a topic of interest in 5G research process, on the other hand. All this is in order to optimize the management of the spectrum. Single-Carrier Frequency Division Multiple Access (SC-FDMA) is well suited waveform for satellite link thanks to its low Peak-to-Average Power Ratio (PAPR) level. Its Orthogonal Frequency-Division Multiplexing (OFDM) based transmitter architecture, allowing a granular frequency access, reinforces its ability to perform well in shared spectrum context. More generally, SC-FDMA waveform seems to be a good candidate for both fixed-mobile convergence and satellite-terrestrial hybridization. This article aims to demonstrate two main points. Firstly, it will be proved that SC-FDMA waveform, even with holes enabling a dynamic use of the spectrum, is well suited to cope with satellite payload impairments, such as nonlinear amplifier and Input Multiplexer. Secondly, it will be assessed that doing frequency holes does not degrade so much air interface performance by using surboost of remaining carriers. As a whole, in this paper, the relevance of SC-FDMA in a shared spectrum context is demonstrated

Pages: 142 to 151

Copyright: Copyright (c) to authors, 2015. Used with permission.

Publication date: December 30, 2015

Published in: journal

ISSN: 1942-2601

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