Low-latency D-MIMO Localization using Distributed Scalable Message-Passing Algorithm
Abstract
Distributed MIMO and integrated sensing and communication are expected to be key technologies in future wireless systems, enabling reliable, low-latency communication and accurate localization. Dedicated localization solutions must support distributed architecture, provide scalability across different system configurations and meet strict latency requirements. We present a scalable message-passing localization method and architecture co-designed for a panel-based distributed MIMO system and network topology, in which interconnected units operate without centralized processing. This method jointly detects line-of-sight paths to distributed units from multipath measurements in dynamic scenarios, localizes the agent, and achieves very low latency. Additionally, we introduce a cycle-accurate system latency model based on implemented FPGA operations, and show important insights into processing latency and hardware utilization and system-level trade-offs. We compare our method to a multipath-based localization method and show that it can achieve similar localization performance, with wide enough distribution of array elements, while offering lower latency and computational complexity.
Cite
@article{arxiv.2508.09546,
title = {Low-latency D-MIMO Localization using Distributed Scalable Message-Passing Algorithm},
author = {Dumitra Iancu and Liang Liu and Ove Edfors and Erik Leitinger and Xuhong Li},
journal= {arXiv preprint arXiv:2508.09546},
year = {2025}
}
Comments
This work has been submitted to the IEEE for possible publication, copyright information may be affected upon publication