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Cell-Free (CF) Massive MIMO (mMIMO) is a technology which can potentially augment not only the deployment of 5G, but also the deployment of beyond 5G (B5G) wireless networks. However, the cost for rolling out such systems may be…

Information Theory · Computer Science 2022-08-02 Ioannis Chiotis , Aris L. Moustakas

The optimal design of the energy-efficient multiple-input multiple-output (MIMO) aided uplink ultra-reliable low-latency communications (URLLC) system is an important but unsolved problem. For such a system, we propose a novel…

Information Theory · Computer Science 2022-09-05 Linlin Zhao , Shaoshi Yang , Xuefen Chi , Wanzhong Chen , Shaodan Ma

We investigate the non-orthogonal coexistence between the ultra-reliable low-latency communication (URLLC) and the enhanced mobile broadband (eMBB) in the downlink of a cell-free massive multiple-input multiple-output (MIMO) system. We…

Information Theory · Computer Science 2024-05-14 Giovanni Interdonato , Stefano Buzzi

The current development trend of wireless communications aims at coping with the very stringent reliability and latency requirements posed by several emerging Internet of Things (IoT) application scenarios. Since the problem of realizing…

Networking and Internet Architecture · Computer Science 2025-03-03 Federico Librino , Paolo Santi

This paper considers a cell-free massive multiple-input multiple-output (MIMO) system that consists of a large number of geographically distributed access points (APs) serving multiple users via coherent joint transmission. The downlink…

Signal Processing · Electrical Eng. & Systems 2022-09-15 Mahmoud Zaher , Özlem Tuğfe Demir , Emil Björnson , Marina Petrova

In the cell-free massive multiple-input multiple-output (CF mMIMO) system, the centralized transmission scheme is widely adopted to manage the inter-user interference. Unfortunately, its implementation is limited by the extensive signaling…

Signal Processing · Electrical Eng. & Systems 2022-08-02 Hongkang Yu , Xinquan Ye , Yijian Chen

An important ingredient of the future 5G systems will be Ultra-Reliable Low-Latency Communication (URLLC). A way to offer URLLC without intervention in the baseband/PHY layer design is to use interface diversity and integrate multiple…

Information Theory · Computer Science 2017-11-22 Jimmy J. Nielsen , Rongkuan Liu , Petar Popovski

Recently, the so-called cell-free Massive MIMO architecture has been introduced, wherein a very large number of distributed access points (APs) simultaneously and jointly serve a much smaller number of mobile stations (MSs). A variant of…

Information Theory · Computer Science 2017-10-24 Stefano Buzzi , Alessio Zappone

Ultra-reliability and low-latency are two key components in 5G networks. In this letter, we investigate the problem of ultra-reliable and low-latency communication (URLLC) in millimeter wave (mmWave)-enabled massive multiple-input…

Information Theory · Computer Science 2017-05-22 Trung Kien Vu , Chen-Feng Liu , Mehdi Bennis , Mérouane Debbah , Matti Latva-aho , Choong Seon Hong

In this paper, we adapt to cell-free Massive MIMO (multiple-input multiple-output) the finite-blocklength framework introduced by \"Ostman et al. (2020) for the characterization of the packet error probability achievable with Massive MIMO,…

Information Theory · Computer Science 2021-07-23 Alejandro Lancho , Giuseppe Durisi , Luca Sanguinetti

CF-mMIMO systems are a promising solution to enhance the performance in 6G wireless networks. Its distributed nature of the architecture makes it highly reliable, provides sufficient coverage and allows higher performance than cellular…

Signal Processing · Electrical Eng. & Systems 2024-02-12 Ramprasad Raghunath , Bile Peng , Eduard A. Jorswieck

In this paper, we study resource allocation algorithm design for multi-user orthogonal frequency division multiple access (OFDMA) ultra-reliable low latency communication (URLLC) in mobile edge computing (MEC) systems. To meet the stringent…

Information Theory · Computer Science 2022-11-10 Walid R. Ghanem , Vahid Jamali , Robert Schober

Ultra-reliable low latency communication (URLLC) is one of three primary use cases in the fifth-generation (5G) networks, and its research is still in its infancy due to its stringent and conflicting requirements in terms of extremely high…

Signal Processing · Electrical Eng. & Systems 2020-02-14 Hong Ren , Cunhua Pan , Yansha Deng , Maged Elkashlan , Arumugam Nallanathan

This paper considers methods for delivering ultra reliable low latency communication (URLLC) to enable mission-critical Internet of Things (IoT) services in wireless environments with unknown channel distribution. The methods rely upon the…

Information Theory · Computer Science 2025-02-18 Hongsen Peng , Tobias Kallehauge , Meixia Tao , Petar Popovski

This paper addresses the problem of enabling inter-machine Ultra-Reliable Low-Latency Communication (URLLC) in future 6G Industrial Internet of Things (IIoT) networks. As far as the Radio Access Network (RAN) is concerned, centralized…

Networking and Internet Architecture · Computer Science 2022-11-23 Francesco Pase , Marco Giordani , Giampaolo Cuozzo , Sara Cavallero , Joseph Eichinger , Roberto Verdone , Michele Zorzi

In this paper, we study resource allocation algorithm design for multiuser orthogonal frequency division multiple access (OFDMA) ultra-reliable low latency communication (URLLC) in mobile edge computing (MEC) systems. To achieve the…

Information Theory · Computer Science 2020-05-12 Walid R. Ghanem , Vahid Jamali , Qiuyu Zhang , Robert Schober

Motivated by the ever-growing demand for \emph{green} wireless communications and the advantages of \emph{cell-free} (CF) massive multiple-input multiple-output (MIMO) systems, we focus on the design of their downlink for optimal…

Information Theory · Computer Science 2021-02-09 Anastasios Papazafeiropoulos , Hien Q. Ngo , Pandelis Kourtessis , Symeon Chatzinotas , John M. Senior

Cell-free networks outperform cellular networks in many aspects, yet their efficiency is affected by imperfect channel state information (CSI). In order to address this issue, this work presents a robust resource allocation framework…

Information Theory · Computer Science 2025-05-20 S. Mashdour , A. Flores , R. C. de Lamare

Secure ultra-reliable low-latency communication (URLLC) has been recently investigated with the fundamental limits of finite block length (FBL) regime in mind. Analysis has revealed that when eavesdroppers outnumber BS antennas or enjoy a…

Signal Processing · Electrical Eng. & Systems 2021-11-30 Mohammad Naseri Tehrani , Shahrokh Farahmand

In this paper, we study resource allocation algorithm design for secure multi-user downlink ultra-reliable low latency communication (URLLC). To enhance physical layer security (PLS), the base station (BS) is equipped with multiple antennas…

Information Theory · Computer Science 2020-03-02 Walid R. Ghanem , Vahid Jamali , Robert Schober