Xu, Hao;
Zhou, Gui;
Wong, Kai Kit;
New, Wee Kiat;
Wang, Chao;
Chae, Chan-Byoun;
Murch, Ross;
... Zhang, Yangyang; + view all
(2023)
Channel Estimation for FAS-assisted Multiuser mmWave Systems.
IEEE Communications Letters
10.1109/LCOMM.2023.3347951.
(In press).
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Abstract
This letter investigates the challenge of channel estimation in a multiuser millimeter-wave (mmWave) time-division duplexing (TDD) system. In this system, the base station (BS) uses a multi-antenna uniform linear array (ULA), while each mobile user has a fluid antenna system (FAS). Accurate channel state information (CSI) plays a crucial role in the precise placement of antennas in FAS. To tackle this issue, we propose a low-sample-size sparse channel reconstruction (L3SCR) method, capitalizing on the sparse propagation paths of mmWave channels. Simulation results show that our method obtains precise CSI with minimal hardware switching and pilot overhead. As a result, the system sum-rate approaches the upper bound with perfect CSI.
| Type: | Article |
|---|---|
| Title: | Channel Estimation for FAS-assisted Multiuser mmWave Systems |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/LCOMM.2023.3347951 |
| Publisher version: | http://dx.doi.org/10.1109/lcomm.2023.3347951 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Channel estimation, fluid antenna system, multiple access, millimeter-wave communication |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10185515 |
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