no code implementations • 21 Dec 2023 • Ruoxiao Cao, Hengtao He, Xianghao Yu, Shenghui Song, Kaibin Huang, Jun Zhang, Yi Gong, Khaled B. Letaief
To address the joint channel estimation and cooperative localization problem for near-field UM-MIMO systems, we propose a variational Newtonized near-field channel estimation (VNNCE) algorithm and a Gaussian fusion cooperative localization (GFCL) algorithm.
no code implementations • 16 Dec 2023 • Wentao Yu, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Ross D. Murch, Khaled B. Letaief
In this paper, we address the fundamental challenge of designing a low-complexity Bayes-optimal channel estimator in near-field HMIMO systems operating in unknown EM environments.
no code implementations • 1 Dec 2023 • Yuyi Mao, Xianghao Yu, Kaibin Huang, Ying-Jun Angela Zhang, Jun Zhang
Guided by these principles, we then explore energy-efficient design methodologies for the three critical tasks in edge AI systems, including training data acquisition, edge training, and edge inference.
no code implementations • 14 Nov 2023 • Wentao Yu, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Ross D. Murch, Khaled B. Letaief
Holographic MIMO (HMIMO) has recently been recognized as a promising enabler for future 6G systems through the use of an ultra-massive number of antennas in a compact space to exploit the propagation characteristics of the electromagnetic (EM) channel.
1 code implementation • 14 Feb 2023 • Hengtao He, Xianghao Yu, Jun Zhang, Shenghui Song, Khaled B. Letaief
As one of the core technologies for 5G systems, massive multiple-input multiple-output (MIMO) introduces dramatic capacity improvements along with very high beamforming and spatial multiplexing gains.
1 code implementation • 29 Nov 2022 • Wentao Yu, Yifei Shen, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Khaled B. Letaief
For practical usage, the proposed framework is further extended to wideband THz UM-MIMO systems with beam squint effect.
no code implementations • 28 Nov 2022 • Yifan Ma, Wentao Yu, Xianghao Yu, Jun Zhang, Shenghui Song, Khaled B. Letaief
In this paper, we propose a lightweight and flexible deep learning-based CSI feedback approach by capitalizing on deep equilibrium models.
no code implementations • 15 Nov 2022 • Wentao Yu, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Khaled B. Letaief
Reliability is of paramount importance for the physical layer of wireless systems due to its decisive impact on end-to-end performance.
no code implementations • 3 Sep 2022 • Yifan Ma, Xianghao Yu, Jun Zhang, S. H. Song, Khaled B. Letaief
In limited feedback multi-user multiple-input multiple-output (MU-MIMO) cellular networks, users send quantized information about the channel conditions to the associated base station (BS) for downlink beamforming.
no code implementations • 30 Jul 2022 • Lei Xie, Xianghao Yu, S. H. Song
Maneuvering target sensing will be an important service of future vehicular networks, where precise velocity estimation is one of the core tasks.
1 code implementation • 10 May 2022 • Wentao Yu, Yifei Shen, Hengtao He, Xianghao Yu, Jun Zhang, Khaled B. Letaief
We draw inspirations from fixed point theory to develop an efficient deep learning based channel estimator with adaptive complexity and linear convergence guarantee.
no code implementations • 1 Oct 2021 • Yifan Ma, Yifei Shen, Xianghao Yu, Jun Zhang, S. H. Song, Khaled B. Letaief
Furthermore, such networks will vary dynamically in a significant way, which makes it intractable to develop comprehensive analytical models.
no code implementations • 3 Aug 2021 • Yifan Ma, Yifei Shen, Xianghao Yu, Jun Zhang, S. H. Song, Khaled B. Letaief
Channel estimation and beamforming play critical roles in frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems.
no code implementations • 26 Apr 2021 • Zhefeng Qiao, Xianghao Yu, Jun Zhang, Khaled B. Letaief
Federated learning (FL) is a promising and powerful approach for training deep learning models without sharing the raw data of clients.