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The trend toward using increasingly large arrays of antenna elements continues. However, fitting more antennas into the limited space available on user equipment (UE) within the currently popular Frequency Range 1 spectrum presents a…

Information Theory · Computer Science 2024-12-30 Chao-Kai Wen , Yen-Cheng Chan , Tzu-Hao Huang , Hao-Jun Zeng , Fu-Kang Wang , Lung-Sheng Tsai , Pei-Kai Liao

Modern MIMO communication systems are almost exclusively designed under the assumption of locally plane wavefronts over antenna arrays. This is known as the far-field approximation and is soundly justified at sub-6-GHz frequencies at most…

Information Theory · Computer Science 2023-02-28 Giacomo Bacci , Luca Sanguinetti , Emil Björnson

The highly sparse nature of propagation channels and the restricted use of radio frequency (RF) chains at transceivers limit the performance of millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems. Introducing…

Information Theory · Computer Science 2018-06-04 Biao He , Hamid Jafarkhani

The framework of network equivalence theory developed by Koetter et al. introduces a notion of channel emulation to construct noiseless networks as upper (resp. lower) bounding models, which can be used to calculate the outer (resp. inner)…

Information Theory · Computer Science 2015-10-01 Jinfeng Du , Muriel Medard , Ming Xiao , Mikael Skoglund

Wireless sensor networks have been increasingly used for real-time surveillance over large areas. In such applications, it is important to support end-to-end delay constraints for packet deliveries even when the corresponding flows require…

Networking and Internet Architecture · Computer Science 2012-04-23 I-Hong Hou

In wireless communication, heterogeneous technologies such as WiFi, ZigBee and BlueTooth operate in the same ISM band.With the exponential growth in the number of wireless devices, the ISM band becomes more and more crowded. These…

Networking and Internet Architecture · Computer Science 2017-07-03 Shuai Wang , Zhimeng Yin , Song Min Kim , Tian He

Motivated by recent increases in network traffic, we propose a decentralized network edge-based solution to peak-hour broadband congestion that incentivizes users to moderate their bandwidth demands to their actual needs. Our solution is…

Networking and Internet Architecture · Computer Science 2013-12-31 Felix Ming Fai Wong , Carlee Joe-Wong , Sangtae Ha , Zhenming Liu , Mung Chiang

Recently, several advanced multi-antenna radio communications technologies have emerged to meet the increased capacity demands in wireless multi-user networks. Despite their great potential, the extent of these techniques' practical…

Information Theory · Computer Science 2015-07-16 Konstantinos Ntougias , Dimitrios Ntaikos , Constantinos B. Papadias

The success in the growing wireless standards can be measured by the achievement of quality of service (QoS) specifications by the designers. The IEEE802.11 wireless standards are widely accepted as wireless technology for wireless LAN.…

Networking and Internet Architecture · Computer Science 2013-09-12 Oladunni Femijemilohun , Stuart Walker

Multiple concepts for future generations of wireless communication standards utilize coherent processing of signals from many distributed antennas. Names for these concepts include distributed MIMO, cell-free massive MIMO, XL-MIMO, and…

Information Theory · Computer Science 2023-04-26 Christian Nelson , Xuhong Li , Thomas Wilding , Benjamin Deutschmann , Klaus Witrisal , Fredrik Tufvesson

This paper explores the integration of simultaneous wireless information and power transfer (SWIPT) with gigantic multiple-input multiple-output (gMIMO) technology operating in the upper mid-band frequency range (7-24 GHz). The near-field…

Signal Processing · Electrical Eng. & Systems 2025-11-03 Özlem Tugfe Demir , Mustafa Ozger , Ferdi Kara , Woong-Hee Lee , Emil Björnson

In cellular systems, the user equipment (UE) can request a change in the frequency band when its rate drops below a threshold on the current band. The UE is then instructed by the base station (BS) to measure the quality of candidate bands,…

Networking and Internet Architecture · Computer Science 2020-09-15 Faris B. Mismar , Ahmad AlAmmouri , Ahmed Alkhateeb , Jeffrey G. Andrews , Brian L. Evans

The performance of irregular phased array architectures is assessed in the context of multi-user multiple-input multiple-output (MU-MIMO) communications operating beyond 100 GHz. Realizing half-wavelength spaced planar phased arrays is…

Signal Processing · Electrical Eng. & Systems 2025-09-30 Yigit Ertugrul , Kamil Yavuz Kapusuz , Claude Desset , Sofie Pollin

The idea of ultra-wideband (UWB) communications for short ranges (up to a few tens of meters) has been around for nearly three decades. However, despite significant efforts by the industry, UWB deployment has not yet reached its predicted…

Signal Processing · Electrical Eng. & Systems 2025-09-10 Brian Nelson , Hussein Moradi , Behrouz Farhang-Boroujeny

IEEE 802.11 is a widely used wireless LAN standard which offers a good bandwidth at low cost In an ESS, multiple APs can co-exist with overlapping coverage area. A mobile node connects to the AP from which it receives the best signal.…

Networking and Internet Architecture · Computer Science 2011-05-30 Abhijit Sarma , Shantanu Joshi , Sukumar Nandi

In millimeter wave (mmWave) communication systems, narrow beam operations overcome severe channel attenuations, reduce multiuser interference, and thus introduce the new concept of noise-limited mmWave wireless networks. The regime of the…

Information Theory · Computer Science 2015-10-02 Hossein Shokri-Ghadikolaei , Carlo Fischione

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

MIMO mobile systems, with a large number of antennas at the base-station side, enable the concurrent transmission of multiple, spatially separated information streams and, therefore, enable improved network throughput and connectivity both…

Information Theory · Computer Science 2021-01-06 Konstantinos Nikitopoulos , Marcin Filo , Chathura Jayawardena , Rahim Tafazolli

Emerging wireless communication systems will be characterized by a tight coupling between communication and positioning. This is particularly apparent in millimeter-wave (mm-wave) communications, where devices use a large number of antennas…

Information Theory · Computer Science 2017-05-17 Gabriel E. Garcia , Gonzalo Seco-Granados , Eleftherios Karipidis , Henk Wymeersch

The most essential part of Internet of Things (IoT) infrastructure is the wireless communication system that acts as a bridge for the delivery of data and control messages. However, the existing wireless technologies lack the ability to…

Networking and Internet Architecture · Computer Science 2016-05-02 Victor Baños-Gonzalez , M. Shahwaiz Afaqui , Elena Lopez-Aguilera , Eduard Garcia-Villegas