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This paper compares centralized and distributed methods to solve the power minimization problem with quality-of-service (QoS) constraints in the downlink (DL) of multi-cell Massive multiple-input multiple-output (MIMO) systems. In…

Information Theory · Computer Science 2018-02-21 Trinh Van Chien , Emil Björnson , Erik G. Larsson , Tuan Anh Le

A novel mechanism for cell differentiation is proposed, based on the dynamic clustering in a globally coupled chaotic system. A simple model with metabolic reaction, active transport of chemicals from media, and cell division is found to…

adap-org · Physics 2009-10-22 Kunihiko Kaneko , Tetsuya Yomo

Experimental studies of cell motility in culture have shown that under adequate conditions these living organisms possess the ability to organize themselves into complex structures. Such structures may exhibit a synergy that greatly…

Statistical Mechanics · Physics 2021-10-27 G. Nakamura , M. Badoual , E. Fabiani , C. Deroulers

We introduce a novel framework for uncertainty quantification in clustering that combines martingale posterior distributions with density-based clustering. Unlike classical model-based approaches, which define clusters at the latent level…

Machine Learning · Statistics 2026-04-20 Nicola Bariletto , Stephen G. Walker

We propose clustered federated multitask learning to address statistical challenges in non-independent and identically distributed data across clients. Our approach tackles complexities in hierarchical wireless networks by clustering…

Networking and Internet Architecture · Computer Science 2024-07-15 Moqbel Hamood , Abdullatif Albaseer , Mohamed Abdallah , Ala Al-Fuqaha , Amr Mohamed

This work presents a new network optimization framework for cellular networks using neighborhood-based optimization. Under this optimization framework resources are allocated within virtual cells encompassing several base-stations and the…

Information Theory · Computer Science 2019-05-09 Michal Yemini , Andrea J. Goldsmith

We consider caching in cellular networks in which each base station is equipped with a cache that can store a limited number of files. The popularity of the files is known and the goal is to place files in the caches such that the…

Networking and Internet Architecture · Computer Science 2017-11-27 Konstantin Avrachenkov , Jasper Goseling , Berksan Serbetci

In this paper, we propose a novel wireless caching scheme to enhance the physical layer security of video streaming in cellular networks with limited backhaul capacity. By proactively sharing video data across a subset of base stations…

Information Theory · Computer Science 2017-11-08 Lin Xiang , Derrick Wing Kwan Ng , Robert Schober , Vincent W. S. Wong

In this paper, a model reduction procedure for a network of interconnected identical passive subsystems is presented. Here, rather than performing model reduction on the subsystems, adjacent subsystems are clustered, leading to a…

Systems and Control · Computer Science 2014-04-29 Bart Besselink , Henrik Sandberg , Karl Henrik Johansson

In this paper, we study the downlink performance of a heterogeneous cellular network (HetNet) where both macro and small cells share the same spectrum and hence interfere with each other. We assume that the users are concentrated at certain…

Information Theory · Computer Science 2014-07-23 Ansuman Adhikary , Harpreet S. Dhillon , Giuseppe Caire

Spectral clustering is one of the most popular unsupervised machine learning methods. Constructing similarity matrix is crucial to this type of method. In most existing works, the similarity matrix is computed once for all or is updated…

Machine Learning · Computer Science 2023-06-30 Yongyan Guo , Gang Wu

This paper considers a multi-cell AirComp network and investigates the optimal power control policies over multiple cells to regulate the effect of inter-cell interference. First, we consider the scenario of centralized multi-cell power…

Information Theory · Computer Science 2020-07-24 Xiaowen Cao , Guangxu Zhu , Jie Xu , Kaibin Huang

The exploitation of already deployed wireless local area networks (WLAN)s (e.g., WiFi access points (AP)s) has attracted considerable attention, as an efficient and practical method to improve the performance of beyond 4G wireless networks.…

Networking and Internet Architecture · Computer Science 2018-06-12 Petros S. Bithas , Athanasios S. Lioumpas

The proposed distributed dynamic clustering algorithm enables to group agents based on their pre-selected feature states. The clusters are determined by comparing the distance of the agents' current feature states with average estimates of…

Systems and Control · Electrical Eng. & Systems 2024-12-20 Runfan Zhang , Branislav Hredzak

Spectral clustering refers to a family of unsupervised learning algorithms that compute a spectral embedding of the original data based on the eigenvectors of a similarity graph. This non-linear transformation of the data is both the key of…

Machine Learning · Computer Science 2019-01-30 Nicolas Tremblay , Andreas Loukas

We consider the downlink of a cellular network with multiple cells and multi-antenna base stations, including a realistic distance-dependent pathloss model, clusters of cooperating cells, and general "fairness" requirements. Beyond Monte…

Information Theory · Computer Science 2016-11-17 Hoon Huh , Giuseppe Caire , Sung-Hyun Moon , Young-Tae Kim , Inkyu Lee

We consider a system with a single base station communicating with multiple users over orthogonal channels while being assisted by multiple relays. Several recent works have suggested that, in such a scenario, selection, i.e., a single…

Information Theory · Computer Science 2009-03-16 Sachin Kadloor , Raviraj Adve

Intercellular exchange networks are essential for the adaptive capabilities of populations of cells. While diffusional exchanges have traditionally been difficult to map, recent advances in nanotechnology enable precise probing of exchange…

Statistical Mechanics · Physics 2024-12-13 Luís C. F. Latoski , Andrea De Martino , Daniele De Martino

In one of the several manifestations, the future cellular networks are required to accommodate a massive number of devices; several orders of magnitude compared to today's networks. At the same time, the future cellular networks will have…

Information Theory · Computer Science 2018-10-16 Mohammad Gharbieh , Ahmed Bader , Hesham ElSawy , Hong-Chuan Yang , Mohamed-Slim Alouini , Abdulkareem Adinoyi

Heterogeneous networks are a flexible deployment model that rely on low power nodes to improve the user broadband experience in a cost effective manner. Femtocells are an integral part of heterogeneous networks, whose main purpose is to…

Information Theory · Computer Science 2015-03-17 Salam Akoum , Marios Kountouris , Robert W. Heath