Parallel Delay-Doppler Estimation via Order-Reversed Two-Stage Prony Method

TL;DR

This paper introduces a novel parallel two-stage Prony-based method for delay-Doppler estimation in OTFS systems, improving accuracy and robustness by resolving ambiguities through parallel processing and result fusion, with promising applications in V2V and ISAC.

Contribution

It presents a new parallel delay-Doppler estimation method that enhances accuracy and robustness in OTFS systems, addressing ambiguity issues with a two-stage approach.

Findings

Demonstrates superior accuracy over existing methods

Shows robustness under various channel conditions

Applicable to V2V and ISAC scenarios

Abstract

This paper proposes a Prony-based parallel two-stage method for delay-Doppler estimation in OTFS systems. By performing delay-first and Doppler-first estimations in parallel and fusing the results, the method resolves ambiguities caused by similar path characteristics. The simulation results demonstrate the superior accuracy and robustness of the proposed method under various conditions. This method provides a promising solution for future applications such as Vehicle-to-Vehicle (V2V) and Integrated Sensing and Communication (ISAC).