Results 71 to 80 of about 15,536 (231)

A Novel training-based MIMO channel estimation scheme for layered space-time systems in frequency selective wireless channels [PDF]

open access: yes, 2009
New development in wireless technology using multiple antennas with appropriate space-time processing has recently become the new frontier of wireless communication systems due to the potential for providing very high spectral efficiency and enormous ...
Siyau, Ming F.
core  

Antenna Selection for MIMO Systems with Closely Spaced Antennas

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
Physical size limitations in user equipment may force multiple antennas to be spaced closely, and this generates a considerable amount of mutual coupling between antenna elements whose effect cannot be neglected. Thus, the design and deployment of antenna selection schemes appropriate for next generation wireless standards such as 3GPP long term ...
Yang Yang, Rick S. Blum, Sana Sfar
openaire   +3 more sources

Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows

open access: yesIEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li   +7 more
wiley   +1 more source

On the Design of Coherent Zero-Forcing Receiver for the Flat Fading MIMO Multiple-Access Channels [PDF]

open access: yesJournal of Electrical and Computer Engineering Innovations, 2019
Background and Objectives: Design of low-complexity receiver for space-time block coded (STBC) transmission over multiple-input multiple-output (MIMO) multiple-access channels has been subject of interest over the years.
M. Sheikh-Hosseini
doaj   +1 more source

Beyond 5G and Non‐terrestrial Network (NTN) Integrated Architecture: Access Challenges for Expanding Artificial Intelligence of Things (AIoT)

open access: yesInternational Journal of Satellite Communications and Networking, Volume 44, Issue 4, Page 378-393, July/August 2026.
ABSTRACT This study analyzes the architecture of the beyond 5G‐NTN (Non‐terrestrial Network) integrated network and presents the technical, legal, and regulatory challenges and considerations for expanding the Artificial Intelligence of Things (AIoT) ecosystem.
Byung Woon Kim, Ga Eun Choi
wiley   +1 more source

Approximate minimum BER power allocation for MIMO-THP system [PDF]

open access: yes, 2008
This paper proposes a transmit power allocation (TPA) scheme based on multiple-input multiple-output (MIMO) Tomlinson-Harashima precoding (THP) structure, where a TPA matrix is introduced to the conventional MIMO-THP.
Lv, Tiejun   +9 more
core   +1 more source

Measurement-Based Spatial Correlation and Capacity of Indoor Distributed MIMO System

open access: yesInternational Journal of Antennas and Propagation, 2013
Distributed MIMO (D-MIMO) system is one of the candidates for future wireless access networks. In this study, the spatial correlation and capacity in indoor D-MIMO system are presented.
Yan Zhang   +3 more
doaj   +1 more source

INFLUENCE OF DOPPLER EFFECTS ON 2×2 TO 4×4 MIMO SYSTEMS WITH DIRECT LINE-OF-SIGHT PATH BY RICIAN FADING DISTRIBUTION

open access: yesInformation and Telecommunication Sciences, 2020
Background. For multiplying the capacity of a radio link by using multiple antennas at the transmitter and receiver ends, wireless communication networks use the MIMO technique.
Vadim Romanuke
doaj   +1 more source

Improving the efficiency of antennas of MIMO communication systems [PDF]

open access: yesITM Web of Conferences, 2019
The last two decades were marked by increasing of interest in problems of application of the MIMO systems in a radar and wireless communication. Use of the principles of creation of MIMO systems in communication complexes allows increasing the capacity ...
Obukhovets Victor
doaj   +1 more source

A Joint Channel Modeling, Parameter Estimation and Geometry‐Based Indoor Localization for 5G Systems

open access: yesTransactions on Emerging Telecommunications Technologies, Volume 37, Issue 6, June 2026.
We propose an end‐to‐end method to accurately localize mobile stations in indoor scenarios, such as those found in Industry 4.0. To this end, we jointly perform wireless channel modeling considering mmWave and MIMO technologies, parameter estimation in 3D, and simple and fine‐grained geometry‐based localization.
Paulo Francisco da Conceição   +2 more
wiley   +1 more source

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