Experimental emulation for OTFS waveform RF-impairments
Abdelrahman Abushattal, Salah Eddine Zegrar, Ayhan Yazgan, and Huseyin, Arslan

TL;DR
This paper experimentally investigates the effects of RF impairments on OTFS waveform performance in high-mobility environments, comparing it to OFDM, using SDR-based tests in real indoor wireless settings.
Contribution
It provides an experimental framework for analyzing RF impairments on OTFS, including practical pulse shaping and real-world validation, which was previously lacking.
Findings
RF impairments significantly affect OTFS performance
Experimental results align with theoretical predictions
OTFS shows robustness in high-mobility scenarios
Abstract
Orthogonal time-frequency space (OTFS) waveform exceeds the challenges that face orthogonal frequency division multiplexing (OFDM) in the high-mobility environment with high time-frequency dispersive channels. Since practical pulse shaping design and RF-impairments effects have a direct impact on waveform behavior, this paper investigates experimental implementation for practical pulse shaping design and RF-impairments that affect OTFS waveform performance and compares them to OFDM waveform as a benchmark. Firstly, the doubly-dispersive channel effect is analyzed, then an experimental framework is established for investigating the RF-impairments include non-linearity, Carrier frequency offset, I/Q-imbalances, DC-offset, and phase noise are considered. The experiments were conducted in a real indoor wireless environment using software-defined radio (SDR)based on the Keysight EXG X-Serie…
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Taxonomy
TopicsPAPR reduction in OFDM · Advanced Fiber Optic Sensors · Advanced Photonic Communication Systems
