Aug 2026· 2026 IEEE/CIC International Conference on Communications in China (ICCC)· pp. 1716-1721· 0 citations· 29 references
Abstract
In urban canyons, blockage and multipath degrade conventional geometric localization, while RSS/RSRP fingerprint maps provide limited distinguishability under single-base-station conditions. This paper uses RT-generated small-scale radio maps with AoA, delay, and RSS features, and estimates the UE position by KNN matching. Experiments in 13 urban canyon scenarios evaluate map/observation noise, map resolution, feature combinations, and KNN parameters. The results show meter-level accuracy under low noise, a stronger impact from observation noise than map perturbations, and the dominant contribution of azimuth AoA and delay, whereas RSS alone is insufficient. These results indicate that small-scale radio maps provide useful spatial priors when path-feature discriminability, map resolution, and observation quality are consistent.
Accurate outdoor localization in Non-Line-of-Sight (NLoS) environments remains a critical challenge for wireless communication and sensing systems. Existing methods, including positioning based on the Global Navigation Satellite System (GNSS) and triple Base Stations (BSs) techniques, cannot provide reliable performanc...
Jia-Jie Xu, Yi-Fan Guo, Xiu-Cheng Wang et al.· 2026 IEEE/CIC International...· 0 citations
In complex navigation and positioning environments such as urban areas, urban canyons, it is challenging to distinguish whether a received signal corresponds to a severely delayed multipath component or to a non-line-of-sight (NLOS) signal. To address this issue, this paper proposes a mathematical hypothesis model of r...
Bin-Hu Chen, Lvyang Ye, Yang-Dong Yan et al.· International Conference on...· 0 citations
Future 5G-Advanced and 6G systems will exploit directional wideband channels for path-based localization, yet map-free indoor positioning remains challenging because extracted multipath components (MPCs) vary widely in localization reliability. This paper presents an uncertainty-aware map-free single-anchor localizatio...
Xing-Chen Liu, Ming-Jun Ying, Xin-Quan Wang et al.· 0 citations
Accurate time difference of arrival (TDOA) localization depends on reliable measurements. In cluttered indoor and urban environments, non-line-of-sight (NLOS) propagation is common. It introduces positive excess delays and biases TDOA observations. This letter studies receiver subset selection for TDOA localization und...
Multipath propagation fundamentally limits wireless positioning in dense urban environments, yet existing mitigation methods often rely on specialized hardware or poorly interpretable data-driven models. We propose a multi-frequency cross-product area (MF-CPA) framework for multipath detection using only standard early...
Rong Yang, Yuquan Ma, Zhi-Hong Li et al.· npj Wireless Technology· 0 citations
Low-power wide-area networks, particularly Long-Range (LoRa), are important enablers of large-scale internet of things deployments in urban environments. However, inconsistencies in measurement methodologies have led to limitations in the accuracy and reproducibility of path loss models. This work presents a large-scal...
