Results 51 to 60 of about 639,489 (294)

A Compact Band-Notched UWB MIMO Antenna with Enhanced Isolation Using Comb Shaped Decoupling Element [PDF]

open access: yesRadioengineering, 2023
A compact 37mm × 26 mm two element multiple-input-multiple-output (MIMO) antenna is presented for ultra wide band (UWB) system application with band notched characteristics.
S. Chatterjee, S. Rana, R. Sanyal
doaj  

High Rate Data Processing System of 6x6 MIMO_OFDM Using FPGA Technique with Spatial Algorithm [PDF]

open access: yesEngineering and Technology Journal, 2018
OFDM has high spectral Performance and pliability in multipath channel effects while MIMO use another strategy for saving power of transmitter by using multi in multi out antennas to make throughput processing in high efficiency.
Muthna Fadhil
doaj   +1 more source

Alternating Minimization Algorithms for Hybrid Precoding in Millimeter Wave MIMO Systems [PDF]

open access: yesIEEE Journal on Selected Topics in Signal Processing, 2016
Millimeter wave (mmWave) communications has been regarded as a key enabling technology for 5G networks, as it offers orders of magnitude greater spectrum than current cellular bands.
Xianghao Yu   +3 more
semanticscholar   +1 more source

MIMO Antenna System Using Orthogonally Polarized Ultra Wide Band Antennas With Metamaterial [PDF]

open access: yesEngineering and Technology Journal, 2010
Modern wireless communications require wide band width resulting in anincreased demand for Ultra-Wide Bandwidth antennas. This paper proposes a design for a compact, ultra wide bandwidth antenna with metamaterial. It will be small in size and utilize the
Jamal M.Rasool
doaj   +1 more source

Spatial data stream multiplexing scheme for high-throughput WLANs [PDF]

open access: yes, 2008
A novel scheme using spatial data stream multiplexing (SDSM) in the upcoming multiple-input multipleoutput (MIMO)-based IEEE 802.11n physical layer is proposed.
Gravalos, AG   +3 more
core   +1 more source

Millimetre wave 3-D channel modelling for next generation 5G networks

open access: yesAIMS Electronics and Electrical Engineering, 2022
Millimetre wave (mm-wave) spectrum (30-300GHz) is a key enabling technology in the advent of 5G. However, an accurate model for the mm-wave channel is yet to be developed as the existing 4G-LTE channel models (frequency below 6 GHz) exhibit different ...
Latih Saba'neh, Obada Al-Khatib
doaj   +1 more source

Performance Analysis of Millimeter Wave Massive MIMO Systems in Centralized and Distributed Schemes [PDF]

open access: yes, 2018
This paper considers downlink multi-user millimeter-wave massive multiple-input multiple-output (MIMO) systems in both centralized and distributed configurations, referred to as C-MIMO and D-MIMO, respectively.
Li, Jing, Sun, Yichuang, Yue, Dian Wu
core   +2 more sources

Power Scaling Laws and Near-Field Behaviors of Massive MIMO and Intelligent Reflecting Surfaces [PDF]

open access: yesIEEE Open Journal of the Communications Society, 2020
The use of large arrays might be the solution to the capacity problems in wireless communications. The signal-to-noise ratio (SNR) grows linearly with the number of array elements $N$ when using Massive MIMO receivers and half-duplex relays.
Emil Björnson, L. Sanguinetti
semanticscholar   +1 more source

Generalized Transceiver Beamforming for DFRC With MIMO Radar and MU-MIMO Communication

open access: yesIEEE Journal on Selected Areas in Communications, 2022
Spatial beamforming is an efficient way to realize dual-functional radar-communication (DFRC). In this paper, we study the DFRC design for a general scenario, where the dual-functional base station (BS) simultaneously detects the target as a multiple ...
L. Chen   +4 more
semanticscholar   +1 more source

Near-Field Channel Estimation in Mixed LoS/NLoS Environments for Extremely Large-Scale MIMO Systems [PDF]

open access: yesIEEE Transactions on Communications, 2022
Accurate channel model and channel estimation are essential to empower extremely large-scale MIMO (XL-MIMO) in 6G networks with ultra-high spectral efficiency.
Yu Lu, L. Dai
semanticscholar   +1 more source

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