Results 71 to 80 of about 5,733 (189)

Massive MIMO Communications

open access: yes, 2016
Every new network generation needs to make a leap in area data throughput, to manage the growing wireless data traffic. The Massive MIMO technologycan bring at least ten-fold improvements in area throughput by increasing the spec-tral efficiency (bit/s/Hz/cell), while using the same bandwidth and density of basestations as in current networks.
Van Chien, Trinh, Björnson, Emil
openaire   +3 more sources

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

Performance Investigation of MIMO Retroreflective Optical ISAC System for Indoor IoT Scenarios

open access: yesGuangtongxin yanjiu
ObjectiveTo meet the practical demand for signal transmission and target sensing in indoor Internet of Things (IoT) scenarios, a Retroreflective Optical Integrated Sensing and Communication (RO-ISAC) system based on a Multiple-Input Multiple-Output (MIMO)
WANG Weiren   +5 more
doaj  

Massive MIMO Communications

open access: yes, 2019
Every new network generation needs to make a leap in area data throughput, to manage the growing wireless data traffic. The Massive MIMO technology can bring at least ten-fold improvements in area throughput by increasing the spectral efficiency (bit/s/Hz/cell), while using the same bandwidth and density of base stations as in current networks.
openaire   +2 more sources

3-D Geometrical Model for Multi-Polarized MIMO Systems

open access: yesIEEE Access, 2017
Multiple-input multiple-output (MIMO) systems capacity is highly influenced by the correlation between antennas, and the high correlation will result in a low capacity.
Xudong Cheng, Yejun He, Mohsen Guizani
doaj   +1 more source

Weighted target detector via estimated SNR in a multipath environment

open access: yesThe Journal of Engineering, 2019
Multipath effect cause serious performance degradation in low-altitude target detection. To overcome the negative multipath effect in a low-altitude environment, a novel weighted detector based on the estimated signal-to-noise ratio (ESNR) is proposed ...
Hao Zhou   +3 more
doaj   +1 more source

Moving target detection with polarimetric distributed MIMO radar in heterogeneous clutter

open access: yesThe Journal of Engineering, 2019
In this study, the authors consider the problem of moving target detection in the presence of heterogeneous clutter. The knowledge-aided method has been extended to derive the polarimetric multiple-input multiple-output (MIMO) radar detector.
Yan Xiang   +3 more
doaj   +1 more source

MIMO Channel Capacity Improvement Using Space Time Coding

open access: yesJournal of Engineering and Sustainable Development, 2015
Wireless communication systems play an important role in our life and society. In this paper, the different types of wireless communication systems Single Input-Single Output (SISO), Single Input-Multiple Output (SIMO), Multiple Input-Single Output ...
Raad Hamdan Thaher   +1 more
doaj  

Design of a compact ultra-wideband MIMO antenna

open access: yesThe Journal of Engineering, 2019
A compact ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna is presented. The MIMO antenna consists of four monopoles which are printed on FR4 substrate, whose impedance bandwidth is from 2 to 12 GHz, and the isolation of two adjacent ...
Wang Youcheng   +3 more
doaj   +1 more source

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