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A Proof of Concept for OTFS Resilience in Doubly-Selective Channels by GPU-Enabled Real-Time SDR

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arxiv 2309.12861 v2 pith:QWS6IDK2 submitted 2023-09-22 cs.IT eess.SPmath.IT

A Proof of Concept for OTFS Resilience in Doubly-Selective Channels by GPU-Enabled Real-Time SDR

Yi Xien Yap , Neil Bhushan , Onur Dizdar , Ata Sattarzadeh , David Redgate , Venkateswara Battula , Stephen Wang This is my paper
classification cs.IT eess.SPmath.IT
keywords otfschannelsdoubly-selectivereal-timedisruptiveeffectsexperimentalfrequency
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Orthogonal time frequency space (OTFS) is a modulation technique which is robust against the disruptive effects of doubly-selective channels. In this paper, we perform an experimental study of OTFS by a real-time software defined radio (SDR) setup. Our SDR consists of a Graphical Processing Unit (GPU) for signal processing programmed using Sionna and TensorFlow, and Universal Software Radio Peripheral (USRP) devices for air interface. We implement a low-latency transceiver structure for OTFS and investigate its performance under various Doppler values. By comparing the performance of OTFS with Orthogonal Frequency Division Multiplexing (OFDM), we demonstrate that OTFS is highly robust against the disruptive effects of doubly-selective channels in a real-time experimental setup.

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