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We consider a cell-free massive multiple-input multiple-output (mMIMO) network, where unmanned aerial vehicles (UAVs) equipped with multiple antennas serve as distributed UAV-access points (UAV-APs). These UAV-APs provide seamless coverage…

Signal Processing · Electrical Eng. & Systems 2025-02-10 Neetu R. R , Ozan Alp Topal , Özlem Tuğfe Demir , Emil Björnson , Cicek Cavdar , Gourab Ghatak , Vivek Ashok Bohara

Cell-free massive multiple-input multiple-output (CFmMIMO) is a paradigm that can improve users' spectral efficiency (SE) far beyond traditional cellular networks. Increased spatial diversity in CFmMIMO is achieved by spreading the antennas…

Signal Processing · Electrical Eng. & Systems 2024-08-01 Vida Ranjbar , Robbert Beerten , Marc Moonen , Sofie Pollin

Massive multiple-input multiple-output (mMIMO) antenna systems and inter-band carrier aggregation (CA)-enabled multi-band communication are two key technologies to achieve very high data rates in beyond fifth generation (B5G) wireless…

Networking and Internet Architecture · Computer Science 2024-07-31 Nuwan Balasuriya , Amine Mezghani , Ekram Hossain

With the proliferation of mobile demands and increasingly multifarious services and applications, mobile Internet has been an irreversible trend. Unfortunately, the current mobile and wireless network (MWN) faces a series of pressing…

Networking and Internet Architecture · Computer Science 2014-09-05 Mao Yang , Yong Li , Depeng Jin , Lieguang Zeng , Xin Wu , Athanasios V. Vasilakos

Cell-free massive MIMO (multiple-input multiple-output) enhances spectral and energy efficiency compared to conventional cellular networks by enabling joint transmission and reception across a large number of distributed access points…

Signal Processing · Electrical Eng. & Systems 2026-02-10 Özlem Tuğfe Demir , Emil Björnson

This article investigates the basic design principles for a new Wireless Network Operating System (WNOS), a radically different approach to software-defined networking (SDN) for infrastructure-less wireless networks. Departing from…

Networking and Internet Architecture · Computer Science 2021-03-08 Zhangyu Guan , Lorenzo Bertizzolo , Emrecan Demirors , Tommaso Melodia

Pinching antennas, implemented by applying small dielectric particles on a waveguide, have emerged as a promising flexible-antenna technology ideal for next-generation wireless communications systems. Unlike conventional flexible-antenna…

Signal Processing · Electrical Eng. & Systems 2025-08-25 Yanqing Xu , Zhiguo Ding , Donghong Cai , Vincent W. S. Wong

We present an evolution of multiple-input multiple-output (MIMO) wireless communications known as the tri-hybrid MIMO architecture. In this framework, the traditional operations of linear precoding at the transmitter are distributed across…

Current learning-based wireless methods struggle with generalization due to the fragmented processing of communication and sensing data. WiFo-MiSAC addresses this as a task-agnostic foundation model that tokenizes heterogeneous signals into…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Xuanyu Liu , Shijian Gao , Boxun Liu , Xiang Cheng , Liuqing Yang

Implementation cost and power consumption are two important considerations in modern wireless communications, particularly in large-scale multi-antenna systems where the number of individual radio-frequency (RF) chains may be significantly…

Information Theory · Computer Science 2017-09-21 Zehao Yu , Cong Shen , Pengkai Zhao , Xiliang Luo

The performance of multiple-input multiple-output wireless systems is investigated in the presence of statistical queueing constraints. Queuing constraints are imposed as limitations on buffer violation probabilities. The performance under…

Information Theory · Computer Science 2009-10-13 Mustafa Cenk Gursoy

Contemporary wireless communication systems rely on Multi-User Multiple-Input Multiple-Output (MU-MIMO) techniques. In such systems, each Access Point (AP) is equipped with multiple antenna elements and serves multiple devices…

Information Theory · Computer Science 2024-12-24 Eduardo Noboro Tominaga , Onel Luis Alcaraz López , Tommy Svensson , Richard Demo Souza , Hirley Alves

We introduce a unified framework for analyzing utility regions of wireless networks, with a focus on signal-to-interference-plus-noise-ratio (SINR) and achievable rate regions. The framework provides valuable insights into interference…

Signal Processing · Electrical Eng. & Systems 2026-05-07 Renato Luis Garrido Cavalcante , Tomasz Piotrowski , Slawomir Stanczak

We present a new type of wireless access infras-tructure consisting of a fabric of dispersed electronic circuitsand antennas that collectively function as a massive, distributed antenna array. We have chosen to name this new wireless…

Signal Processing · Electrical Eng. & Systems 2020-01-17 Liesbet Van der Perre , Erik G. Larsson , Fredrik Tufvesson , Lieven De Strycker , Emil Björnson , Ove Edfors

A feature of the Internet of Things (IoT) is that some users in the system need to be served quickly for small packet transmission. To address this requirement, a new multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA)…

Information Theory · Computer Science 2016-03-02 Z. Ding , L. Dai , H. V. Poor

We study the problem of cache-aided communication for cellular networks with multi-user and multiple antennas at finite signal-to-noise ratio. Users are assumed to have non-symmetric links, modeled by wideband fading channels. We show that…

Information Theory · Computer Science 2018-08-09 Itsik Bergel , Soheil Mohajer

Unmanned aerial vehicles (UAVs) can be deployed as flying base stations (BSs) to leverage the strength of line-of-sight connections and effectively support the coverage and throughput of wireless communication. This paper considers a…

Information Theory · Computer Science 2018-06-12 Ali A. Nasir , Hoang D. Tuan , Trung Q. Duong , H. Vincent Poor

Multiple-input multiple-output (MIMO) system has been the defining mobile communications technology in recent generations. With the ever-increasing demands looming towards the sixth generation (6G), we are in need of additional degrees of…

Information Theory · Computer Science 2023-10-27 Wee Kiat New , Kai-Kit Wong , Hao Xu , Kin-Fai Tong , Chan-Byoung Chae

Fluid antenna system (FAS) represents the concept of treating antenna as a reconfigurable physical-layer resource to broaden system design and network optimization and inspire next-generation reconfigurable antennas. FAS can unleash new…

Signal Processing · Electrical Eng. & Systems 2025-12-23 Tuo Wu , Kai-Kit Wong , Jie Tang , Junteng Yao , Baiyang Liu , Kin-Fai Tong , Chan-Byoung Chae , Matthew C. Valenti , Kwai-Man Luk

Cell-free massive multiple-input multiple-output (CF mMIMO) provides good interference management by coordinating many more access points (APs) than user equipments (UEs). It becomes challenging to determine which APs should serve which UEs…

Information Theory · Computer Science 2022-12-06 Shuaifei Chen , Jiayi Zhang , Emil Björnson , Bo Ai
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