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- W4313466057 abstract "The orthogonal time-frequency space (OTFS) waveform exceeds the challenges that face orthogonal frequency division multiplexing (OFDM) in a high-mobility environment with high time-frequency dispersive channels. Since radio frequency (RF) impairments have a direct impact on waveform behavior, this paper investigates the experimental implementation of RF-impairments that affect OTFS waveform performance and compares them to the OFDM waveform as a benchmark. Firstly, the doubly-dispersive channel effect is analyzed, and then an experimental framework is established for investigating the impact of RF-impairments, including non-linearity, carrier frequency offset (CFO), 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) at carrier frequencies of 2.4 GHz and 5 GHz based on the Keysight EXG X-Series devices. The comparison of the performances of OFDM and OTFS in the presence of RF-impairments reveals that OTFS significantly outperforms OFDM." @default.
- W4313466057 created "2023-01-06" @default.
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- W4313466057 date "2022-12-21" @default.
- W4313466057 modified "2023-09-25" @default.
- W4313466057 title "A Comprehensive Experimental Emulation for OTFS Waveform RF-Impairments" @default.
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- W4313466057 doi "https://doi.org/10.3390/s23010038" @default.
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