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Aiming for the sixth generation (6G) wireless communications, distributed massive multiple-input multiple-output (MIMO) systems hold significant potential for spatial multiplexing. In order to evaluate the ability of a distributed massive…

信号处理 · 电气工程与系统科学 2024-11-28 Yingjie Xu , Michiel Sandra , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson

Classification between different activities in an indoor environment using wireless signals is an emerging technology for various applications, including intrusion detection, patient care, and smart home. Researchers have shown different…

信息论 · 计算机科学 2021-02-10 B. R. Manoj , Guoda Tian , Sara Gunnarsson , Fredrik Tufvesson , Erik G. Larsson

Massive MIMO (multiple-input multiple-output) is no longer a "wild" or "promising" concept for future cellular networks - in 2018 it became a reality. Base stations (BSs) with 64 fully digital transceiver chains were commercially deployed…

信号处理 · 电气工程与系统科学 2019-06-13 Emil Björnson , Luca Sanguinetti , Henk Wymeersch , Jakob Hoydis , Thomas L. Marzetta

We introduce a novel physical layer scheme for single user Multiple-Input Multiple-Output (MIMO) communications based on unsupervised deep learning using an autoencoder. This method extends prior work on the joint optimization of physical…

信息论 · 计算机科学 2017-07-26 Timothy J. O'Shea , Tugba Erpek , T. Charles Clancy

Existing work in intelligent communications has recently made preliminary attempts to utilize multi-source sensing information (MSI) to improve the system performance. However, the research on MSI aided intelligent communications has not…

信号处理 · 电气工程与系统科学 2020-12-01 Yuwen Yang , Feifei Gao , Chengwen Xing , Jianping An , Ahmed Alkhateeb

Massive MIMO, also known as very-large MIMO or large-scale antenna systems, is a new technique that potentially can offer large network capacities in multi-user scenarios. With a massive MIMO system, we consider the case where a base…

信息论 · 计算机科学 2016-11-17 Xiang Gao , Ove Edfors , Fredrik Rusek , Fredrik Tufvesson

Distributed multiple-input multiple-output (MIMO), also known as cell-free massive MIMO, emerges as a promising technology for sixth-generation (6G) systems to support uniform coverage and reliable communication. For the design and…

信号处理 · 电气工程与系统科学 2025-04-17 Yingjie Xu , Michiel Sandra , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson

Channel estimation is a critical task in multiple-input multiple-output (MIMO) digital communications that substantially effects end-to-end system performance. In this work, we introduce a novel approach for channel estimation using deep…

信号处理 · 电气工程与系统科学 2022-11-09 Marius Arvinte , Jonathan I Tamir

A recently conducted indoor-to-outdoor measurement campaign for investigating the propagation characteristics of an $8 \times 8$ virtual multiple-input-multiple-output (MIMO) based wireless sensor network (WSN) is presented in this paper.…

信号处理 · 电气工程与系统科学 2020-07-03 I. Dey , M. Majid Butt , N. Marchetti

When operating massive multiple-input multiple-output (MIMO) systems with uplink (UL) and downlink (DL) channels at different frequencies (frequency division duplex (FDD) operation), acquisition of channel state information (CSI) for…

信息论 · 计算机科学 2022-09-23 Florian Euchner , Niklas Süppel , Marc Gauger , Sebastian Dörner , Stephan ten Brink

Channel state information (CSI) at the base station (BS) is crucial to achieve beamforming and multiplexing gains in multiple-input multiple-output (MIMO) systems. State-of-the-art limited feedback schemes require feedback overhead that…

信息论 · 计算机科学 2018-10-17 Panos N. Alevizos , Xiao Fu , Nicholas D. Sidiropoulos , Yang Ye , Aggelos Bletsas

This paper presents an end-to-end deep learning framework in a movable antenna (MA)-enabled multiuser communication system. In contrast to the conventional works assuming perfect channel state information (CSI), we address the practical CSI…

信息论 · 计算机科学 2025-09-16 Ruizhi Zhang , Yuchen Zhang , Lipeng Zhu , Ying Zhang , Rui Zhang

Noncoherent communication is a promising paradigm for future wireless systems where acquiring accurate channel state information (CSI) is challenging or infeasible. It provides methods to bypass the need for explicit channel estimation in…

This paper proposes the use of deep autoencoders to compress the channel information in a \review{massive} multiple input and multiple output (MIMO) system. Although autoencoders perform lossy compression, they still have adequate…

网络与互联网体系结构 · 计算机科学 2024-10-07 Faris B. Mismar , Aliye Özge Kaya

Millimeter-wave (mmWave) multiple-input multiple-output (MIMO) system for the fifth generation (5G) cellular communications can also enable single-anchor positioning and object tracking due to its large bandwidth and inherently high angular…

信号处理 · 电气工程与系统科学 2019-10-02 Jiguang He , Henk Wymeersch , Long Kong , Olli Silvén , Markku Juntti

Massive MIMO systems are highly efficient but critically rely on accurate channel state information (CSI) at the base station in order to determine appropriate precoders. CSI acquisition requires sending pilot symbols which induce an…

信息论 · 计算机科学 2022-01-06 Luc Le Magoarou , Taha Yassine , Stéphane Paquelet , Matthieu Crussière

MIMO (Multi Input Multi Output) wireless communication system is an innovative solution to improve the bandwidth efficiency by exploiting multipath-richness of the propagation environment. The degree of multipath-richness of the channel…

网络与互联网体系结构 · 计算机科学 2010-03-25 M. Habib Ullah , Md. Niamul Bari , A. Unggul Priantoro

Channel charting is a data-driven baseband processing technique consisting in applying self-supervised machine learning techniques to channel state information (CSI), with the objective of reducing the dimension of the data and extracting…

信号处理 · 电气工程与系统科学 2021-05-03 Paul Ferrand , Alexis Decurninge , Luis G. Ordoñez , Maxime Guillaud

This work presents an experimental study of Single Input Multiple Output (SIMO) channel performance in indoor radio propagation environment. Indoor channel measurements at 2.4 GHz ISM frequency band have been performed using a versatile…

信号处理 · 电气工程与系统科学 2017-09-20 Constantinos I. Votis , Vasilis Christofilakis , Panos Kostarakis

Distributed multiple-input multiple-output (MIMO), also known as cell-free massive MIMO, has emerged as a promising technology for sixth-generation (6G) wireless networks. This letter introduces an indoor channel measurement campaign…

信号处理 · 电气工程与系统科学 2025-11-06 Yingjie Xu , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson