Results 61 to 70 of about 14,777 (220)
Multisegment Mapping Network for Massive MIMO Detection
International Journal of Antennas and Propagation, 2021 The massive multiple-input multiple-output (MIMO) technology is one of the core technologies of 5G, which can significantly improve spectral efficiency.
Yongzhi Yu, Jianming Wang, Limin Guo
doaj +1 more source
Design Parameters for Massive Communication Systems Under Energy-Efficient Polynomial Precoder
IEEE Access, 2022 Massive multiple-input multiple output (MIMO) systems have been introduced as a resolution for next generation cellular systems. The complexity of computing the precoding in massive MIMO is increased.
Mohamed G. El-Mashed +3 more
doaj +1 more source
Parallel Vector Processing in Optical Computing With Jacobi Time‐Wave Packets
Laser &Photonics Reviews, EarlyView.Functionality of a single neuron and state of the art photonic acceleration with a Mach‐Zehnder‐interferometer (MZI) mesh (i), a crossbar array (ii) and a micro ring resonator (MRR) array (iii). In the proposed Jacobi time‐wave packet approach (iv) a single modulator (here a ring modulator) is performing the whole scalar vector product in a single ...
Janosch Meier +5 more
wiley +1 more source
Hybrid Beamforming for Massive MIMO: A Survey [PDF]
IEEE Communications Magazine, 2017 Hybrid multiple-antenna transceivers, which combine large-dimensional analog pre/postprocessing with lower-dimensional digital processing, are the most promising approach for reducing the hardware cost and training overhead in massive MIMO systems. This paper provides a comprehensive survey of the various incarnations of such structures that have been ...
Molisch, Andreas F. +7 more
openaire +2 more sources
Indoor Massive MIMO Channel Modelling Using Ray-Launching Simulation
International Journal of Antennas and Propagation, 2014 Massive multi-input multioutput (MIMO) is a promising technique for the next generation of wireless communication networks. In this paper, we focus on using the ray-launching based channel simulation to model massive MIMO channels.
Jialai Weng +4 more
doaj +1 more source
Orthogonally Precoded Massive MIMO for High Mobility Scenarios
IEEE Access, 2019 Massive multiple-input multiple-output (MIMO) systems are of high interest for ultra-reliable low-latency communication (URLLC) links. They provide channel hardening, i.e.
Thomas Zemen +4 more
doaj +1 more source
Cell-Free Massive MIMO with Energy-Efficient Downlink Operation in Industrial IoT
Mathematics, 2022 Cell-free massive Multi-input Multi-output (MIMO) can offer higher spectral efficiency compared with cellular massive MIMO by providing services to users through the collaboration of distributed APs, and cell-free massive MIMO systems with distributed ...
Xiaomin Chen +4 more
doaj +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada +4 more
wiley +1 more source
On Out-of-Band Emissions of Quantized Precoding in Massive MU-MIMO-OFDM [PDF]
, 2017 We analyze out-of-band (OOB) emissions in the massive multi-user (MU) multiple-input multiple-output (MIMO) downlink. We focus on systems in which the base station (BS) is equipped with low-resolution digital-to-analog converters (DACs) and orthogonal ...
Sven Jacobsson +11 more
core +1 more source
A Simulation Framework for Multiple-Antenna Terminals in 5G Massive MIMO Systems
IEEE Access, 2017 The recent interest in massive multiple in multiple out (MIMO) has spurred intensive work on massive MIMO channel modeling in the contemporary literature. However, current models fail to take the characteristics of terminal antennas into account.
Erik L. Bengtsson +5 more
doaj +1 more source