no code implementations • 19 Jun 2025 • Junyi Jiang, Wei Chen, Xin Guo, Shenghui Song, Ying Jun, Zhang, Zhu Han, Merouane Debbah, Khaled B. Letaief
The full-scale 6G standardization has attracted considerable recent attention, especially since the first 3GPP-wide 6G workshop held in March 2025.
no code implementations • 5 May 2025 • Kai Zhang, Wentao Yu, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief
Integrated sensing and communication (ISAC) systems operating at terahertz (THz) bands are envisioned to enable both ultra-high data-rate communication and precise environmental awareness for next-generation wireless networks.
no code implementations • 18 Mar 2025 • Hang Zhao, Hongru Li, Dongfang Xu, Shenghui Song, Khaled B. Letaief
Semantic communication is emerging as a promising paradigm that focuses on the extraction and transmission of semantic meanings using deep learning techniques.
no code implementations • 13 Dec 2024 • Wentao Yu, Hengtao He, Shenghui Song, Jun Zhang, Linglong Dai, Lizhong Zheng, Khaled B. Letaief
We propose three research roadmaps for AI algorithms tailored to THz UM-MIMO systems.
1 code implementation • 2 Dec 2024 • Songjie Xie, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief
In this work, we propose the concepts of knowledge vaporization and concentration to selectively erase learned knowledge from specific data points while maintaining representations for the remaining data.
1 code implementation • 1 Dec 2024 • Songjie Xie, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief
Task-oriented communication presents a promising approach to improve the communication efficiency of edge inference systems by optimizing learning-based modules to extract and transmit relevant task information.
no code implementations • 12 Nov 2024 • Tianqu Kang, Zixin Wang, Hengtao He, Jun Zhang, Shenghui Song, Khaled B. Letaief
Fine-tuning large pre-trained foundation models (FMs) on distributed edge devices presents considerable computational and privacy challenges.
no code implementations • 25 Aug 2024 • Yiming Xu, Mingxuan Zheng, Dongfang Xu, Shenghui Song, Daniel Benevides da Costa
The additional degree of freedom (DoF) in the distance domain of near-field communication offers new opportunities for physical layer security (PLS) design.
no code implementations • 26 Jun 2024 • Linping Qu, Shenghui Song, Chi-Ying Tsui
In this work, we introduce a holistic approach by joint uplink and downlink adaptive quantization to reduce the communication overhead.
no code implementations • 26 Jun 2024 • Linping Qu, Yuyi Mao, Shenghui Song, Chi-Ying Tsui
One of the most critical challenges for deploying distributed learning solutions, such as federated learning (FL), in wireless networks is the limited battery capacity of mobile clients.
no code implementations • 24 Jun 2024 • Yifan Ma, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief
In frequency-division duplex (FDD) massive multiple-input multiple-output (MIMO) systems, the growing number of base station antennas leads to prohibitive feedback overhead for downlink channel state information (CSI).
1 code implementation • 15 May 2024 • Hongru Li, Jiawei Shao, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief
Specifically, we propose an invariant feature encoding approach based on the IB principle and IRM framework for domainshift generalization, which aims to find the causal relationship between the input data and task result by minimizing the complexity and domain dependence of the encoded feature.
no code implementations • 15 Feb 2024 • Yiming Xu, Dongfang Xu, Shenghui Song
Simultaneous wireless information and power transfer (SWIPT) has been proposed to offer communication services and transfer power to the energy harvesting receiver (EHR) concurrently.
no code implementations • 15 Feb 2024 • Wenhao Zhuang, Yuyi Mao, Hengtao He, Lei Xie, Shenghui Song, Yao Ge, Zhi Ding
Orthogonal time frequency space (OTFS) modulation has emerged as a promising solution to support high-mobility wireless communications, for which, cost-effective data detectors are critical.
no code implementations • 28 Dec 2023 • Ho Man Kwan, Shenghui Song
In particular, the teacher model in FedSDD is an ensemble built by a small group of aggregated (global) models, instead of all client models, such that the computation cost will not scale with the number of clients.
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 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 • 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.
no code implementations • 25 Oct 2023 • Linping Qu, Shenghui Song, Chi-Ying Tsui, Yuyi Mao
It is also shown that the uplink communication in FL can tolerate a higher bit error rate (BER) than downlink communication, and this difference is quantified by a proposed formula.
no code implementations • 18 Sep 2023 • Wentao Yu, Yifan Ma, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief
Massive multiple-input multiple-output (MIMO) has been a critical enabling technology in 5th generation (5G) wireless networks.
no code implementations • 7 Aug 2023 • Lumin Liu, Jun Zhang, Shenghui Song, Khaled B. Letaief
To improve communication efficiency and achieve a better privacy-utility trade-off, we propose a communication-efficient FL training algorithm with differential privacy guarantee.
no code implementations • 20 Jul 2023 • Dohoon Kim, Shenghui Song
Power control for the device-to-device interference channel with single-antenna transceivers has been widely analyzed with both model-based methods and learning-based approaches.
no code implementations • 10 Jul 2023 • Gerry Windiarto Mohamad Dunda, Shenghui Song
Federated learning (FL) has garnered considerable attention due to its privacy-preserving feature.
no code implementations • 24 May 2023 • Linxuan Pan, Shenghui Song
However, existing analysis failed to explain why the multiple local updates with small mini-batches of data (L-SGD) can not be replaced by the update with one big batch of data and a larger learning rate (SGD).
1 code implementation • 21 May 2023 • Hongru Li, Wentao Yu, Hengtao He, Jiawei Shao, Shenghui Song, Jun Zhang, Khaled B. Letaief
Task-oriented communication is an emerging paradigm for next-generation communication networks, which extracts and transmits task-relevant information, instead of raw data, for downstream applications.
no code implementations • 9 May 2023 • Yiming Xu, Dongfang Xu, Lei Xie, Shenghui Song
Different from conventional radar, the cellular network in the integrated sensing and communication (ISAC) system enables collaborative sensing by multiple sensing nodes, e. g., base stations (BSs).
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 • 22 Aug 2022 • Lei Xie, Shenghui Song
As a result, most existing methods require a large number of data samples to achieve an accurate estimate of the covariance matrix for the received signals, based on which a power spectrum is constructed for localization purposes.
no code implementations • 23 Jul 2022 • Ho Man Kwan, Shenghui Song
Downsampling is widely adopted to achieve a good trade-off between accuracy and latency for visual recognition.
no code implementations • 5 Oct 2021 • Linping Qu, Shenghui Song, Chi-Ying Tsui
Experimental results show that the proposed descending quantization scheme can save up to 65. 2% of the communicated bit volume and up to 68% of the communication rounds, when compared with existing schemes.
no code implementations • 26 Mar 2021 • Lumin Liu, Jun Zhang, Shenghui Song, Khaled B. Letaief
Hierarchical FL, with a client-edge-cloud aggregation hierarchy, can effectively leverage both the cloud server's access to many clients' data and the edge servers' closeness to the clients to achieve a high communication efficiency.