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With the growing size of deep neural networks and datasets, the computational costs of training have significantly increased. The layer-freezing technique has recently attracted great attention as a promising method to effectively reduce…

Machine Learning · Computer Science 2025-08-22 Chence Yang , Ci Zhang , Lei Lu , Qitao Tan , Sheng Li , Ao Li , Xulong Tang , Shaoyi Huang , Jinzhen Wang , Guoming Li , Jundong Li , Xiaoming Zhai , Jin Lu , Geng Yuan

Graph-SLAM is a well-established algorithm for constructing a topological map of the environment while simultaneously attempting the localisation of the robot. It relies on scan matching algorithms to align noisy observations along robot's…

Robotics · Computer Science 2022-01-20 Giorgio Iavicoli , Claudio Zito

Artificial intelligence approaches for base-band processing for radio receivers have demonstrated significant performance gains. Most of the proposed methods are characterized by high compute and memory requirements, hindering their…

Signal Processing · Electrical Eng. & Systems 2025-10-23 Mahdi Abdollahpour , Marco Bertuletti , Yichao Zhang , Yawei Li , Luca Benini , Alessandro Vanelli-Coralli

In this paper, optimal content caching strategy is proposed to jointly minimize the cell average outage probability and fronthaul usage in cloud radio access network (Cloud-RAN). At first, an accurate closed form expression of the outage…

Information Theory · Computer Science 2018-02-06 Zhun Ye , Cunhua Pan , Huiling Zhu , Jiangzhou Wang

We study the important and challenging problem of virtualized radio access network (vRAN) design in its most general form. We develop an optimization framework that decides the number and deployment locations of central/cloud units (CUs);…

Networking and Internet Architecture · Computer Science 2020-07-31 Fahri Wisnu Murti , Andres Garcia-Saavedra , Xavier Costa-Perez , George Iosifidis

This work studies the advantages of coded multicasting for the downlink of a Fog Radio Access Network (F-RAN) system equipped with a multicast fronthaul link. In this system, a control unit (CU) in the baseband processing unit (BBU) pool is…

Information Theory · Computer Science 2017-05-12 Seok-Hwan Park , Osvaldo Simeone , Wonju Lee , Shlomo Shamai

Differentiable solvers for the linear assignment problem (LAP) have attracted much research attention in recent years, which are usually embedded into learning frameworks as components. However, previous algorithms, with or without learning…

Machine Learning · Computer Science 2022-01-07 He Liu , Tao Wang , Congyan Lang , Songhe Feng , Yi Jin , Yidong Li

Graph neural networks (GNNs) achieve strong performance on relational data, but real-world graphs are often distributed across organizations that cannot share raw data due to privacy and policy constraints. Existing federated GNN methods…

Machine Learning · Computer Science 2026-05-27 Zhishuai Guo , Wenhan Wu , Chen Chen , Lei Zhang , Olivera Kotevska , Ravi K Madduri

Graph-RAG improves LLM reasoning using structured knowledge, yet conventional designs rely on a centralized knowledge graph. In distributed and access-restricted settings (e.g., hospitals or multinational organizations), retrieval must…

Artificial Intelligence · Computer Science 2026-02-10 Longkun Li , Yuanben Zou , Jinghan Wu , Yuqing Wen , Jing Li , Hangwei Qian , Ivor Tsang

Communication efficiency arises as a necessity in federated learning due to limited communication bandwidth. To this end, the present paper develops an algorithmic framework where an ensemble of pre-trained models is learned. At each…

Machine Learning · Computer Science 2022-03-01 Pouya M Ghari , Yanning Shen

Graph Neural Networks (GNNs) have received considerable attention on graph-structured data learning for a wide variety of tasks. The well-designed propagation mechanism which has been demonstrated effective is the most fundamental part of…

Machine Learning · Computer Science 2021-01-29 Meiqi Zhu , Xiao Wang , Chuan Shi , Houye Ji , Peng Cui

This paper proposes an application mapping algorithm, BandMap, for coarse-grained reconfigurable array (CGRA), which allocates the bandwidth in PE array according to the transferring demands of data, especially the data with high spatial…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-10-11 Xiaobing Ni , Jiaheng Ruan , Mengke Ge , Wendi Sun , Song Chen , Yi Kang

We study embedding table placement for distributed recommender systems, which aims to partition and place the tables on multiple hardware devices (e.g., GPUs) to balance the computation and communication costs. Although prior work has…

Machine Learning · Computer Science 2022-10-06 Daochen Zha , Louis Feng , Qiaoyu Tan , Zirui Liu , Kwei-Herng Lai , Bhargav Bhushanam , Yuandong Tian , Arun Kejariwal , Xia Hu

Flexible cooperation among base stations (BSs) is critical to improve resource utilization efficiency and meet personalized user demands. However, its practical implementation is hindered by the current radio access network (RAN), which…

Signal Processing · Electrical Eng. & Systems 2025-06-05 Jingbo Liu , Jiacheng Chen , Zeyu Sun , Bo Qian , Haibo Zhou

In this work we propose a fronthaul compression scheme for distributed MIMO systems with multi-antenna receivers, in which, prior to signal quantisation, dimension reduction is performed at each receiver by matched filtering the received…

Information Theory · Computer Science 2020-05-28 Fred Wiffen , Mohammud Z. Bocus , Angela Doufexi , Woon Hau Chin

To decrease the training overhead and improve the channel estimation accuracy in uplink cloud radio access networks (C-RANs), a superimposed-segment training design is proposed. The core idea of the proposal is that each mobile station…

Information Theory · Computer Science 2015-06-23 Xinqian Xie , Mugen Peng , H. Vincent Poor

In virtualized radio access network (vRAN), the base station (BS) functions are decomposed into virtualized components that can be hosted at the centralized unit or distributed units through functional splits. Such flexibility has many…

Networking and Internet Architecture · Computer Science 2022-06-06 Fahri Wisnu Murti , Samad Ali , Matti Latva-aho

In the Cloud Radio Access Network (C-RAN) architecture, the baseband signals from multiple remote radio heads are processed in a centralized baseband unit (BBU) pool. This architecture allows network operators to adapt the BBU's…

Information Theory · Computer Science 2017-03-16 Anders E. Kalør , Mauricio I. Agurto , Nuno K. Pratas , Jimmy J. Nielsen , Petar Popovski

The aggressive densification of modern wireless networks necessitates judicious resource allocation to mitigate severe mutual interference. However, classical iterative algorithms remain computationally prohibitive for real-time…

Machine Learning · Computer Science 2026-04-10 Yucheng Sheng , Jiacheng Wang , Le Liang , Hao Ye , Shi Jin

Graph Neural Networks (GNNs) have recently emerged as a promising approach to tackling power allocation problems in wireless networks. Since unpaired transmitters and receivers are often spatially distant, the distance-based threshold is…

Information Theory · Computer Science 2024-06-04 Lili Chen , Jingge Zhu , Jamie Evans
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