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In this paper, we present a fixed mmWave Multi-User Multiple-Input Multiple-Output (MIMO) system for fixed wireless access with a unique architecture. A digital MIMO system is combined with an analog multi-beam antenna array which uses a…

信号处理 · 电气工程与系统科学 2020-03-10 Achiel Colpaert , Evgenii Vinogradov , Sofie Pollin

This paper investigates the user grouping problem of downlink wireless local area networks (WLANs) with multi-user MIMO (MU-MIMO). Particularly, we focus on the problem of whether single user transmit beamforming (SU-TxBF) or MU-MIMO should…

信号处理 · 电气工程与系统科学 2018-12-05 Xiaofu Ma , Qinghai Gao , Vuk Marojevic , Jeffrey H. Reed

This paper introduces a novel joint communication and proactive monitoring (JCAM) system that simultaneously monitors multiple untrusted links and serves multiple legitimate users. The system leverages a cell-free massive multiple-input…

信号处理 · 电气工程与系统科学 2026-04-07 Mustafa S. Abbas , Zahra Mobini , Hamid Reza Hashempour , Hien Quoc Ngo , Michail Matthaiou

Massive multiuser (MU) multiple-input multiple-output (MIMO) is foreseen to be one of the key technologies in fifth-generation wireless communication systems. In this paper, we investigate the problem of downlink precoding for a narrowband…

信息论 · 计算机科学 2017-06-30 Sven Jacobsson , Giuseppe Durisi , Mikael Coldrey , Tom Goldstein , Christoph Studer

As a critical component of sixth-generation (6G) wireless networks, ultra-reliable and low-latency communication (URLLC) is expected to support real-time and reliable information exchange in low-altitude environments. However, achieving…

信号处理 · 电气工程与系统科学 2026-05-15 Donggen Li , Chong Huang , Jingfu Li , Pei Xiao , Wenjiang Feng , Dusit Niyato , Zhu Han

Massive multiuser (MU) multiple-input multiple-output (MIMO) enables concurrent transmission of multiple users to a multi-antenna basestation (BS). To detect the users' data using linear equalization, the BS must perform preprocessing,…

信号处理 · 电气工程与系统科学 2024-10-18 Darja Nonaca , Christoph Studer

In this paper, we propose algorithms for signal detection in large-scale multiuser {\em spatial modulation multiple-input multiple-output (SM-MIMO)} systems. In large-scale SM-MIMO, each user is equipped with multiple transmit antennas…

信息论 · 计算机科学 2013-11-07 P. Raviteja , T. Lakshmi Narasimhan , A. Chockalingam

Wireless objects equipped with multiple antennas are able to simultaneously transmit multiple packets by exploiting the channel's spatial dimensions. In this paper, we study the benefits of such Multiple Packet Transmission (MPT) approach,…

网络与互联网体系结构 · 计算机科学 2013-06-25 Boris Bellalta , Azadeh Faridi , Dirk Staehle , Jaume Barcelo , Alexey Vinel , Miquel Oliver

In this work, we analyze the downlink performance of a cell-free massive multiple-input-multiple-output system with finite capacity fronthaul links between the centralized baseband units and the access point (APs). Conditioned on the user…

信息论 · 计算机科学 2022-02-23 Priyabrata Parida , Harpreet S. Dhillon

With the increasing number of Internet of Things (IoT) devices, Machine Type Communication (MTC) has become an important use case of the Fifth Generation (5G) communication systems. Since MTC devices are mostly disconnected from Base…

网络与互联网体系结构 · 计算机科学 2022-01-14 Junseok Kim , Seongwon Kim , T. Taleb , Sunghyun Choi

IEEE 802.11ad specifies a hybrid medium access control (MAC) protocol consisting of contention as well as noncontention-based channel access mechanisms. Further, it also employs directional antennas to compensate for the high freespace path…

网络与互联网体系结构 · 计算机科学 2019-09-10 Kishor Chandra , R. Venkatesha Prasad , Ignas Niemegeers

60GHz wireless local area networks (WLANs) standards (e.g., IEEE 802.11ad and IEEE 802.15.3c) employ hybrid MAC protocols consisting of contention based access using CSMA/CA as well as dedicated service periods using time division multiple…

网络与互联网体系结构 · 计算机科学 2019-09-10 Kishor Chandra , R. Venkatesha Prasad , I. G. M. M. Niemegeers , Abdur R. Biswas

With the growing interest in the deployment of massive multiple-input-multiple-output (MIMO) systems and millimeter wave technology for fifth generation (5G) wireless systems, the computation power to the total power consumption ratio is…

网络与互联网体系结构 · 计算机科学 2018-06-08 Xiaohu Ge , Yang Sun , Hamid Gharavi , John Thompson

To meet the goal of ten-fold increase in spectral efficiency, multiuser multiple-input-multiple-output (MU-MIMO) techniques capable of achieving high spatial multiplexing gains are expected to be an essential component of fifth-generation…

信息论 · 计算机科学 2016-11-15 Nassar Ksairi , Beatrice Tomasi , Stefano Tomasin

This paper presents a consensus protocol that achieves max-consensus in multi-agent systems over wireless channels. Interference, a feature of the wireless channel, is exploited: each agent receives a superposition of broadcast data, rather…

系统与控制 · 计算机科学 2018-05-18 Fabio Molinari , Sławomir Stańczak , Jörg Raisch

In this paper, we propose adaptive techniques for multi-user multiple input and multiple output~(MU-MIMO) cellular communication systems, to solve the problem of energy efficient communications with heterogeneous delay-aware traffic. In…

信号处理 · 电气工程与系统科学 2020-03-05 Kunlun Wang , Wen Chen , Jun Li , Qingqing Wu , Branka Vucetic

User scheduling and multiuser multi-antenna (MU-MIMO) transmission are at the core of high rate data-oriented downlink schemes of the next-generation of cellular systems (e.g., LTE-Advanced). Scheduling selects groups of users according to…

信息论 · 计算机科学 2016-11-17 Hooman Shirani-Mehr , Haralabos C. Papadopoulos , Sean A. Ramprashad , Giuseppe Caire

In this paper, the uplink adaptation for massive multiple-input-multiple-output (MIMO) networks without the knowledge of user density is considered. Specifically, a novel cooperative uplink transmission and detection scheme is first…

信息论 · 计算机科学 2019-04-30 Yang Li , Zezhong Zhang , Rui Wang , Kaibin Huang , Yifan Chen

Integrating coded caching (CC) into multi-input multi-output (MIMO) setups significantly enhances the achievable degrees of freedom (DoF). We consider a cache-aided MIMO configuration with a CC gain $t$, where a server with $L$ Tx-antennas…

信息论 · 计算机科学 2023-11-27 Mohammad NaseriTehrani , MohammadJavad Salehi , Antti Tölli

Base stations with a large number of transmit antennas have the potential to serve a large number of users at high rates. However, the receiver processing in the uplink relies on channel estimates which are known to suffer from pilot…

信息论 · 计算机科学 2016-11-18 Narayanan Krishnan , Roy D. Yates , Narayan B. Mandayam