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Massive MIMO systems can achieve high spectrum and energy efficiency in downlink (DL) based on accurate estimate of channel state information (CSI). Existing works have developed learning-based DL CSI estimation that lowers uplink feedback…

信息论 · 计算机科学 2022-05-31 Yu-Chien Lin , Ta-Sung Lee , Zhi Ding

In frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO), deep learning (DL)-based superimposed channel state information (CSI) feedback has presented promising performance. However, it is still facing many…

信号处理 · 电气工程与系统科学 2020-03-13 Chaojin Qing , Bin Cai , Qingyao Yang , Jiafan Wang , Chuan Huang

Federated learning (FL) is an emerging distributed machine learning paradigm that enables collaborative model training without sharing local data. Despite its advantages, FL suffers from substantial communication overhead, which can affect…

机器学习 · 计算机科学 2025-09-15 Shiwei Li , Qunwei Li , Haozhao Wang , Ruixuan Li , Jianbin Lin , Wenliang Zhong

To address data locality and privacy restrictions, Federated Learning (FL) has recently been adopted to fine-tune large language models (LLMs), enabling improved performance on various downstream tasks without requiring aggregated data.…

分布式、并行与集群计算 · 计算机科学 2025-11-11 Han Liu , Ruoyao Wen , Srijith Nair , Jia Liu , Wenjing Lou , Chongjie Zhang , William Yeoh , Yevgeniy Vorobeychik , Ning Zhang

Federated fine-tuning of on-device large language models (LLMs) mitigates privacy concerns by preventing raw data sharing. However, the intensive computational and memory demands pose significant challenges for resource-constrained edge…

网络与互联网体系结构 · 计算机科学 2026-02-13 Tao Li , Yulin Tang , Yiyang Song , Cong Wu , Xihui Liu , Pan Li , Xianhao Chen

Federated Learning offers a way to train deep neural networks in a distributed fashion. While this addresses limitations related to distributed data, it incurs a communication overhead as the model parameters or gradients need to be…

机器学习 · 计算机科学 2023-05-26 Morten From Elvebakken , Alexandros Iosifidis , Lukas Esterle

Federated learning (FL) scenarios inherently generate a large communication overhead by frequently transmitting neural network updates between clients and server. To minimize the communication cost, introducing sparsity in conjunction with…

Base station cooperation can exploit knowledge of the users' channel state information (CSI) at the transmitters to manage co-channel interference. Users have to feedback CSI of the desired and interfering channels using finite-bandwidth…

信息论 · 计算机科学 2015-05-20 Ramya Bhagavatula , Robert W. Heath,

Contextual bandit algorithms have been recently studied under the federated learning setting to satisfy the demand of keeping data decentralized and pushing the learning of bandit models to the client side. But limited by the required…

机器学习 · 计算机科学 2022-10-14 Chuanhao Li , Hongning Wang

Federated learning (FL) enables multiple clients to collaboratively train a shared model without disclosing their local datasets. This is achieved by exchanging local model updates with the help of a parameter server (PS). However, due to…

机器学习 · 计算机科学 2021-01-25 Emre Ozfatura , Kerem Ozfatura , Deniz Gunduz

For frequency division duplex systems, the essential downlink channel state information (CSI) feedback includes the links of compression, feedback, decompression and reconstruction to reduce the feedback overhead. One efficient CSI feedback…

信号处理 · 电气工程与系统科学 2023-06-06 Xiangyi Li , Jiajia Guo , Chao-Kai Wen , Shi Jin , Shuangfeng Han , Xiaoyun Wang

Federated learning (FL) is a novel machine learning setting that enables on-device intelligence via decentralized training and federated optimization. Deep neural networks' rapid development facilitates the learning techniques for modeling…

机器学习 · 计算机科学 2021-09-27 Shaoxiong Ji , Wenqi Jiang , Anwar Walid , Xue Li

Large pre-trained models have exhibited remarkable achievements across various domains. The substantial training costs associated with these models have led to wide studies of fine-tuning for effectively harnessing their capabilities in…

机器学习 · 计算机科学 2024-07-26 Linxiao Cao , Yifei Zhu , Wei Gong

Federated learning (FL) ameliorates privacy concerns in settings where a central server coordinates learning from data distributed across many clients. The clients train locally and communicate the models they learn to the server;…

机器学习 · 计算机科学 2020-10-16 Monica Ribero , Haris Vikalo

Federated Learning (FL) trains machine learning models on edge devices with distributed data. However, the computational and memory limitations of these devices restrict the training of large models using FL. Split Federated Learning (SFL)…

机器学习 · 计算机科学 2025-04-02 Di Wu , Weibo He , Wanglei Feng , Zhenyu Wen , Bin Qian , Blesson Varghese

The advent of deep learning (DL)-based models has significantly advanced Channel State Information (CSI) feedback mechanisms in wireless communication systems. However, traditional approaches often suffer from high communication overhead…

人工智能 · 计算机科学 2023-12-12 Zhilin Du , Haozhen Li , Zhenyu Liu , Shilong Fan , Xinyu Gu , Lin Zhang

Massive MIMO basestations, operating with frequency-division duplexing (FDD), require the users to feedback their channel state information (CSI) in order to design the precoding matrices. Given the powerful capabilities of deep neural…

信息论 · 计算机科学 2024-01-17 Yu Zhang , Ahmed Alkhateeb

Federated learning (FL) operates based on model exchanges between the server and the clients, and it suffers from significant client-side computation and communication burden. Split federated learning (SFL) arises a promising solution by…

分布式、并行与集群计算 · 计算机科学 2025-04-23 Yiannis Papageorgiou , Yannis Thomas , Alexios Filippakopoulos , Ramin Khalili , Iordanis Koutsopoulos

Channel state information (CSI) acquisition is essential for the base station (BS) to fully reap the beamforming gain in intelligent reflecting surface (IRS)-aided downlink communication systems. Recently, [1] revealed a strong correlation…

信号处理 · 电气工程与系统科学 2024-12-02 Rui Wang , Zhaorui Wang , Liang Liu , Shuowen Zhang , Shi Jin

Base station cooperation improves the sum-rates that can be achieved in cellular systems. Conventional cooperation techniques require sharing large amounts of information over finite-capacity backhaul links and assume that base stations…

信息论 · 计算机科学 2009-12-08 Ramya Bhagavatula , Robert W. Heath