IEEE TCOMISAC
High-Resolution Uplink Sensing in Millimeter-Wave ISAC Systems
What can an uplink signal tell us about its surroundings?
- Publication
- IEEE Transactions on CommunicationsVol. 73, No. 11 · pp. 12680–12695
- Authors
- L. Zhao, Z. Ni, Y. Feng, J. Li, X. Bu, and J. Andrew Zhang
Research overview
Hybrid arrays and unsynchronized clocks complicate uplink sensing. This work combines frequency smoothing, reference-signal construction, and AB2FM to estimate arrival angles, Doppler shifts, and delays while preserving their association.
THE APPROACH
The method, in three steps.
- 01AoA
Resolve the directions
Beam scanning and frequency smoothing resolve arrival angles for static and moving paths.
- 02Reference
Handle clock offsets
A constructed reference signal reduces the impact of unsynchronized transmitter and receiver clocks.
- 03AB2FM
Estimate delay and Doppler
AoA-based 2D-FFT-MUSIC jointly estimates Doppler and delay.
Paper & code
Read further. Try the code.
The MATLAB simulation includes angle estimation, beamforming, and delay–Doppler estimation. Main.m sets up the scenario; Params.m configures the array and signal parameters.
BIBTEX
Cite this work
@ARTICLE{Zhao2025HighResolution,
author={Zhao, Liangbin and Ni, Zhitong and Feng, Yimeng and Li, Jianguo and Bu, Xiangyuan and Andrew Zhang, J.},
journal={IEEE Transactions on Communications},
title={High-Resolution Uplink Sensing in Millimeter-Wave ISAC Systems},
year={2025},
volume={73},
number={11},
pages={12680-12695},
doi={10.1109/TCOMM.2025.3585582}
}