In this letter, we study the problem of cooperative sensing design for an orthogonal frequency division multiplexing (OFDM) multiple base stations (MBS) system. We consider a practical scenario where the base stations (BSs) exploit certain subcarriers to realize a sensing function. Since the high sidelobe level (SLL) of OFDM waveforms degrades radar detection for weak targets, and the cross-correlation generated by other BSs further exacerbates detection performance, we devise a joint design scheme for OFDM sequence and receive filter by minimizing the integrated sidelobe level (ISL) while satisfying mainlobe level, peak-to-average power ratio (PAPR) and spectrum allocation constraints. To address this non-convex problem, we propose an alternating optimization (AO)-based algorithm. Numerical simulations validate the effectiveness of the proposed method, demonstrating the superiority of SSL reduction in the MBS system over the matched filtering method.
@article{arxiv.2506.20231,
title = {Sensing-Aware Transmit Waveform/Receive Filter Design for OFDM-MBS Systems},
author = {Xinghe Li and Kainan Cheng and Hongzhi Guo and Huiyong Li and Ziyang Cheng},
journal= {arXiv preprint arXiv:2506.20231},
year = {2025}
}