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Future wireless communications are largely inclined to deploy massive numbers of antennas at the base stations (BSs) by leveraging cost- and energy-efficient as well as environmentally friendly antenna arrays. The emerging technology of…

Information Theory · Computer Science 2023-01-11 Li You , Jie Xu , George C. Alexandropoulos , Jue Wang , Wenjin Wang , Xiqi Gao

This letter focuses on integrating rate-splitting multiple-access (RSMA) with time-division-duplex Cell-free Massive MIMO (multiple-input multiple-output) for massive machine-type communications. Due to the large number of devices, their…

Signal Processing · Electrical Eng. & Systems 2022-05-06 Anup Mishra , Yijie Mao , Luca Sanguinetti , Bruno Clerckx

This paper considers a cellular system with a full-duplex base station and half-duplex users. The base station can activate one user in uplink or downlink (half-duplex mode), or two different users one in each direction simultaneously…

Information Theory · Computer Science 2018-05-01 Shahram Shahsavari , David Ramirez , Elza Erkip

This article addresses the problem of Ultra Reliable Low Latency Communications (URLLC) in wireless networks, a framework with particularly stringent constraints imposed by many Internet of Things (IoT) applications from diverse sectors. We…

Networking and Internet Architecture · Computer Science 2023-08-29 Benoît-Marie Robaglia , Marceau Coupechoux , Dimitrios Tsilimantos

This paper provides proofs of the rate stability, Harris recurrence, and epsilon-optimality of CSMA algorithms where the backoff parameter of each node is based on its backlog. These algorithms require only local information and are easy to…

Information Theory · Computer Science 2009-07-08 Libin Jiang , Devavrat Shah , Jinwoo Shin , Jean Walrand

Cell-free massive multiple-input-multiple-output is considered a promising technology for the next generation of wireless communication networks. The main idea is to distribute a large number of access points (APs) in a geographical region…

Signal Processing · Electrical Eng. & Systems 2026-01-28 Andreas Angelou , Pourya Behmandpoor , Marc Moonen

We propose a combined uplink/downlink opportunistic scheduling algorithm for infrastructure WLANs. In the presence of both uplink and downlink flows, an infrastructure WLAN suffers from the uplink/downlink unfairness problem which severely…

Networking and Internet Architecture · Computer Science 2013-10-31 Nischal S , Vinod Sharma

One of key 5G scenarios is that device-to-device (D2D) and massive multiple-input multiple-output (MIMO) will be co-existed. However, interference in the uplink D2D underlaid massive MIMO cellular networks needs to be coordinated, due to…

Information Theory · Computer Science 2017-05-30 Anqi He , Lifeng Wang , Yue Chen , Kai-Kit Wong , Maged Elkashlan

In millimeter wave (mmWave) systems, we investigate uplink user scheduling when a basestation employs low-resolution analog-to-digital converters (ADCs) with a large number of antennas. To reduce power consumption in the receiver,…

Information Theory · Computer Science 2018-02-01 Jinseok Choi , Brian L. Evans

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

The uplink data arriving at the Machine-to-Machine (M2M) Application Server (AS) via M2M Aggregators (MAs) is fairly heterogeneous along several dimensions such as maximum tolerable packet delay, payload size and arrival rate, thus…

Information Theory · Computer Science 2016-06-22 Akshay Kumar , Ahmed Abdelhadi , Charles Clancy

In this paper, a novel distributed scheduling algorithm is proposed, which aims to efficiently schedule both the uplink and downlink backhaul traffic in the relay-assisted mmWave backhaul network with a tree topology. The handshaking of…

Networking and Internet Architecture · Computer Science 2022-02-17 Qiang Hu , Yuchen Liu , Yan Yan , Miao Liu , Jun Zheng , Douglas M. Blough

We investigate the problem of supporting Industrial Internet of Things user equipment (IIoT UEs) with intent (i.e., requested quality of service (QoS)) and random traffic arrival. A deep reinforcement learning (DRL) based centralized…

Information Theory · Computer Science 2025-01-07 Salwa Mostafa , Mateus P. Mota , Alvaro Valcarce , Mehdi Bennis

Machine-type communications (MTC) devices in 5G will use the Non-orthogonal multiple access (NOMA) technology for massive connections. These devices switch between the transmission mode and the sleep mode for battery saving; and their…

Information Theory · Computer Science 2018-07-24 Bowen Cai , Yu Chen , Qimei Cui , Xiaoxuan Zhu , Yang Yang

One of the major challenges in Dynamic Spectrum Access (DSA) systems is to guarantee a required level of Quality of Service (QoS) to secondary users of the spectrum. In this paper, we propose efficient algorithms for deriving optimal…

Information Theory · Computer Science 2016-07-08 Spyridon Vassilaras , George C. Alexandropoulos

Intelligent terminals often produce a large number of data packets of small lengths. For these packets, it is inefficient to follow the conventional medium access control (MAC) protocols because they lead to poor utilization of service…

Information Theory · Computer Science 2016-11-18 Ronggui Xie , Huarui Yin , Zhengdao Wang , Xiaohui Chen

With the rapid development of high-speed railway (HSR), how to provide the passengers with multimedia services has attracted increasing attention. A key issue is to develop an effective scheduling algorithm for multiple services with…

Networking and Internet Architecture · Computer Science 2016-11-15 Shengfeng Xu , Gang Zhu , Chao Shen , Bo Ai

A deep learning (DL)-based power control algorithm that solves the max-min user fairness problem in a cell-free massive multiple-input multiple-output (MIMO) system is proposed. Max-min rate optimization problem in a cell-free massive MIMO…

Signal Processing · Electrical Eng. & Systems 2021-02-23 Nuwanthika Rajapaksha , K. B. Shashika Manosha , Nandana Rajatheva , Matti Latva-aho

Internet of things, supported by machine-to-machine (M2M) communications, is one of the most important applications for future 6th generation (6G) systems. A major challenge facing by 6G is enabling a massive number of M2M devices to access…

Information Theory · Computer Science 2022-09-30 Kan Zheng , Haojun Yang , Xiong Xiong , Jie Mei , Kuan Zhang

Wireless devices need to adapt their transmission power according to the fluctuating wireless channel in order to meet constraints of delay sensitive applications. In this paper, we consider delay sensitivity in the form of strict packet…

Information Theory · Computer Science 2018-09-21 Emmanouil Fountoulakis , Nikolaos Pappas , Qi Liao , Anthony Ephremides , Vangelis Angelakis