Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Low-latency D-MIMO Localization using distributed scalable message-passing algorithm

Iancu, Dumitra LU ; Liu, Liang LU orcid ; Edfors, Ove LU orcid ; Leitinger, Erik and Li, Xuhong LU (2025)
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Working paper/Preprint
publication status
published
subject
pages
6 pages
DOI
10.48550/arXiv.2508.09546
language
English
LU publication?
yes
id
25ca7776-8ecd-4d9f-83b0-f0cb9dc8b152
date added to LUP
2026-01-04 23:36:31
date last changed
2026-01-07 11:43:38
@misc{25ca7776-8ecd-4d9f-83b0-f0cb9dc8b152,
  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.}},
  author       = {{Iancu, Dumitra and Liu, Liang and Edfors, Ove and Leitinger, Erik and Li, Xuhong}},
  language     = {{eng}},
  month        = {{08}},
  note         = {{Preprint}},
  title        = {{Low-latency D-MIMO Localization using distributed scalable message-passing algorithm}},
  url          = {{http://dx.doi.org/10.48550/arXiv.2508.09546}},
  doi          = {{10.48550/arXiv.2508.09546}},
  year         = {{2025}},
}