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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…

Signal Processing · Electrical Eng. & Systems 2025-04-17 Yingjie Xu , Michiel Sandra , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson

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…

Signal Processing · Electrical Eng. & Systems 2024-11-28 Yingjie Xu , Michiel Sandra , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson

In this paper, we present a robust multipath-based localization and mapping framework that exploits the phases of specular multipath components (MPCs) using a massive multiple-input multiple-output (MIMO) array at the base station.…

Information Theory · Computer Science 2024-10-30 Xuhong Li , Erik Leitinger , Magnus Oskarsson , Kalle Åström , Fredrik Tufvesson

Cell-free widely distributed massive multiple-input multiple-output (MIMO) systems utilize radio units spread out over a large geographical area. The radio signal of a user equipment (UE) is coherently detected by a subset of radio units…

Signal Processing · Electrical Eng. & Systems 2022-08-31 David Löschenbrand , Markus Hofer , Laura Bernadó , Stefan Zelenbaba , Thomas Zemen

Many concepts for future generations of wireless communication systems use coherent processing of signals from many distributed antennas. The aim is to improve communication reliability, capacity, and energy efficiency and provide…

Information Theory · Computer Science 2024-03-06 Christian Nelson , Xuhong Li , Aleksei Fedorov , Benjamin J. B. Deutschmann , Fredrik Tufvesson

Massive Multiple-Input Multiple-Output (mMIMO) is one of the essential technologies introduced by the Fifth Generation (5G) of wireless communication systems. However, although mMIMO provides many benefits for wireless communications, it…

Information Theory · Computer Science 2023-04-13 Eduardo Noboro Tominaga , Onel Luiz Alcaraz López , Hirley Alves , Richard Demo Souza , Leonardo Terças

This paper focuses on the parameterization of the multipath propagation model (MPM) for indoor broadband power line communications (PLC), which up to now has been established in an heuristic way. The MPM model was initially proposed in the…

Signal Processing · Electrical Eng. & Systems 2026-01-01 José A. Cortés , Alberto Pittolo , Irene Povedano , Francisco J. Cañete , Andrea M. Tonello

This letter considers a two-panel massive multiple-input multiple-output (MIMO) communication system, where the base station (BS) is equipped with two antenna panels that may use different frequency bands for communication. By exploiting…

Information Theory · Computer Science 2024-02-09 Y. Qiu , D. W , Y. Zeng

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.…

Signal Processing · Electrical Eng. & Systems 2020-07-03 I. Dey , M. Majid Butt , N. Marchetti

Millimeter-wave multi-input multi-output (mm-Wave MIMO) systems are one of the candidate schemes for 5G wireless standardization efforts. In this context, the main contributions of this article are three-fold. 1) We describe parallel sets…

3-dimensional Multiple-Input Multiple-Output (3D MIMO) systems have received great interest recently because of the spatial diversity advantage and capability for full-dimensional beamforming, making them promising candidates for practical…

Future 5G communication systems require more demanding performances than the existing cellular communication systems, e.g., 10 to 100 Mbps user data rate and much larger cellular spectrum efficiency. The well-used multiple access methods…

Signal Processing · Electrical Eng. & Systems 2020-02-04 Shin-Yuan Wang , Wei-Han Hsiao , Kang-Lun Chiu , Chia-Chi Huang

This paper analyzes the spectral efficiency of massive multiple-input multiple-output (MIMO) systems in both centralized and distributed configurations, referred to as C-MIMO and D-MIMO, respectively. By accounting for real environmental…

Information Theory · Computer Science 2016-11-18 Gervais N. Kamga , Minghua Xia , Sonia Aïssa

Cell-free massive multi-input multi-output (MIMO) has recently gained a lot of attention due to its high potential in sixth-generation (6G) wireless systems. The goal of this paper is to first present a unified modeling for massive MIMO,…

Information Theory · Computer Science 2024-05-17 Wei Jiang , Hans D. Schotten

We propose and analyse a model predictive control (MPC) strategy tailored for networks of underwater agents tasked with maintaining formation while following a shared path and using acoustic communication channels. The strategy accommodates…

Optimization and Control · Mathematics 2024-10-22 Emil Wengle , Damiano Varagnolo

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…

Information Theory · Computer Science 2016-11-17 Xiang Gao , Ove Edfors , Fredrik Rusek , Fredrik Tufvesson

Massive MIMO is a new technique for wireless communications that claims to offer very high system throughput and energy efficiency in multi-user scenarios. The cost is to add a very large number of antennas at the base station. Theoretical…

Information Theory · Computer Science 2015-07-23 Àlex Oliveras Martínez , Elisabeth De Carvalho , Jesper Ødum Nielsen

Future wireless communication systems are envisioned to support ultra-reliable and low-latency communication (URLLC), which will enable new applications such as compute offloading, wireless real-time control, and reliable monitoring.…

Signal Processing · Electrical Eng. & Systems 2026-04-01 Christian Nelson , Sara Willhammar , Fredrik Tufvesson

This paper takes a new look at Cell-free Massive MIMO (multiple-input multiple-output) through the lens of the dynamic cooperation cluster framework from the Network MIMO literature. The purpose is to identify and address scalability issues…

Information Theory · Computer Science 2019-06-27 Emil Björnson , Luca Sanguinetti

In the sixth-generation (6G), the extremely large-scale multiple-input-multiple-output (XL-MIMO) is considered a promising enabling technology. With the further expansion of array element number and frequency bands, near-field effects will…

Information Theory · Computer Science 2024-04-29 Haiyang Miao , Jianhua Zhang , Pan Tang , Lei Tian , Weirang Zuo , Qi Wei , Guangyi Liu
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