no code implementations • 11 Apr 2024 • Chengyu Xia, Danny H. K. Tsang, Vincent K. N. Lau
We propose a decentralized Turbo variational Bayesian inference (D-Turbo-VBI) FL framework where we firstly propose a hierarchical sparse prior to promote a clustered sparse structure in the weight matrix.
no code implementations • 13 Oct 2023 • Hancheng Zhu, Yuanwei Liu, Yik Chung Wu, Vincent K. N. Lau
Due to the lack of a unified comparison of communication systems equipped with different modes of STAR-RIS and the performance degradation caused by the constraints involving discrete selection, this paper proposes a unified optimization framework for handling the STAR-RIS operating mode and discrete phase constraints.
no code implementations • 21 Feb 2023 • Chengyu Xia, Danny H. K. Tsang, Vincent K. N. Lau
We derive an efficient Turbo-variational Bayesian inferencing (Turbo-VBI) algorithm to solve the resulting model compression problem with the proposed prior.
no code implementations • 27 Oct 2021 • Huayan Guo, Yifan Zhu, Haoyu Ma, Vincent K. N. Lau, Kaibin Huang, Xiaofan Li, Huabin Nong, Mingyu Zhou
In this paper, we develop an orthogonal-frequency-division-multiplexing (OFDM)-based over-the-air (OTA) aggregation solution for wireless federated learning (FL).
1 code implementation • 20 Aug 2021 • Huayan Guo, Vincent K. N. Lau
This paper investigates the uplink cascaded channel estimation for intelligent-reflecting-surface (IRS)-assisted multi-user multiple-input-single-output systems.
no code implementations • 20 Apr 2021 • Zezhong Zhang, Guangxu Zhu, Rui Wang, Vincent K. N. Lau, Kaibin Huang
The novelty of this design lies in exploiting channel noise to accelerate the descent in the region around each saddle point encountered by gradient descent, thereby increasing the convergence speed of over-the-air PCA.