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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…

信息论 · 计算机科学 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 · 物理学 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…

统计力学 · 物理学 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…

机器学习 · 统计学 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…

网络与互联网体系结构 · 计算机科学 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…

信息论 · 计算机科学 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…

网络与互联网体系结构 · 计算机科学 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…

信息论 · 计算机科学 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…

系统与控制 · 计算机科学 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…

信息论 · 计算机科学 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…

机器学习 · 计算机科学 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…

信息论 · 计算机科学 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.…

网络与互联网体系结构 · 计算机科学 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…

系统与控制 · 电气工程与系统科学 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…

机器学习 · 计算机科学 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…

信息论 · 计算机科学 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…

信息论 · 计算机科学 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…

统计力学 · 物理学 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…

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…

信息论 · 计算机科学 2015-03-17 Salam Akoum , Marios Kountouris , Robert W. Heath