Multi-Scatter-Point Target Estimation for Sensing-Assisted OTFS Automotive Communication
Conference: WSA & SCC 2023 - 26th International ITG Workshop on Smart Antennas and 13th Conference on Systems, Communications, and Coding
02/27/2023 at Braunschweig, Germany
Proceedings: ITG-Fb. 308: WSA & SCC 2023
Pages: 6Language: englishTyp: PDF
Authors:
Dehkordi, Saeid K.; Hauffen, Jan C.; Caire, Giuseppe (Technical University of Berlin, Germany)
Jung, Peter; Hernangomez, Rodrigo; Stanczak, Slawomir (Technical University of Berlin, Germany & Fraunhofer Heinrich Hertz Institute, Berlin, Germany)
Abstract:
We consider radar parameter estimation for multi-scatterer targets with an Integrated Sensing and Communication (ISAC) system employing a Hybrid Digital-Analog (HDA) architecture and Orthogonal Time Frequency Space (OTFS) digital modulation. To deal with the beamforming restrictions imposed by the HDA architecture, we investigate parameter estimation under a multi-block observation scheme and formulate this as two distinct variations of the Multiple Measurement Vector (MMV) framework. The Fast-Iterative Shrinkage Thresholding Algorithm (FISTA) is then used to solve the problem. Our numerical results demonstrate that using this technique, it is possible to reliably resolve a multi-scatter-point target and obtain an estimation of the target’s geometric extent, which can be used for post-processing requirements such as tracking or orientation estimation.