Indoor multipath is shaped by surrounding reflectors, scatterers, and blockages, so a relative power-delay profile (PDP) can serve as a location fingerprint without an identifiable LoS path, angle information, or absolute time-of-arrival ranging. However, arXiv:2606.27157v1 [eess.SP] 25 Jun 2026 a communication receiver observes finitely many noisy pilotfrequency samples rather than an ideal PDP. This paper models the resulting Dirichlet blur, delay folding, and off-grid mismatch, and reconstructs a posterior-power profile using expectationmaximization sparse Bayesian learning. In spatially consistent QuaDRiGa simulations, twofold SBL raises 20-dB Top-1 accuracy from 75.79% (native PDP) and 87.24% (threefold zero-padding) to 93.27%, with 0.392 m mean error.
Single-base-station indoor localization via super-resolved relative power delay profiles
Submitted to IEEE Wireless Communication Letters, 2026
Type:
Report
Date:
2026-06-25
Department:
Communication systems
Eurecom Ref:
8844
Copyright:
© 2026 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
See also:
PERMALINK : https://www.eurecom.fr/publication/8844
