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arXiv · 2405.00372

High-Precision Positioning with Continuous Delay and Doppler Shift using AFT-MC Waveforms

Cong Yi·Haoran Yin·Xianjie Lu·Yanqun Tang
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Abstract

This paper explores a novel integrated localization and communication (ILAC) system using the affine Fourier transform multicarrier (AFT-MC) waveform. Specifically, we consider a multiple-input multiple-output (MIMO) AFT-MC system with ILAC and derive a continuous delay and Doppler shift channel matrix model. Based on the derived signal model, we develop a two-step algorithm with low complexity for estimating channel parameters. Furthermore, we derive the Cram\'er-Rao lower bound (CRLB) of location estimation as the fundamental limit of localization. Finally, we provide some insights about the AFT-MC parameters by explaining the impact of the parameters on localization performance. Simulation results demonstrate that the AFT-MC waveform is able to provide significant localization performance improvement compared to orthogonal frequency division multiplexing (OFDM) while achieving the CRLB of location estimation.

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Cong Yi, Haoran Yin, Xianjie Lu, Yanqun Tang. 2024-05-01. High-Precision Positioning with Continuous Delay and Doppler Shift using AFT-MC Waveforms. https://arxiv.org/abs/2405.00372

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