5G Contender Waveforms for Low Power Wide Area Networks in a 4G OFDM Framework

Abstract : —When designing new solutions for Low Power Wide Area (LPWA) networks, coexistence and integration into existing 4G frameworks should be considered to ease the deployment procedure and reduce costs. In a previous work, Turbo-Frequency Shift Keying (FSK) was proposed as a potential physical layer for LPWA networks. We propose to study the system in the Orthogonal Frequency Division Multiplexing (OFDM) framework , currently used by existing cellular networks and also considered for the recently standardized Narrow-Band IoT. The new architectures of the Turbo-FSK transmitter and receiver are presented. Simulations are run under various conditions including Rayleigh fading channel with mobility, demonstrating the Turbo-FSK scheme to achieve performance close to Turbo-Coded OFDM. The scheme also exhibits a constant envelope, which may multiply the Power Amplifier (PA) efficiency by up to a factor of 2 and makes the solution a promising candidate for 5G LPWA transmission.
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Yoann Roth, Jean-Baptiste Doré, Laurent Ros, Vincent Berg. 5G Contender Waveforms for Low Power Wide Area Networks in a 4G OFDM Framework. ICT 2018, 25th International Conference on Telecommunications, Jun 2018, Saint-Malo, France. ⟨cea-01846022⟩

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