Results 31 to 40 of about 1,958,932 (291)

Novel Method for Improving the Capacity of Optical MIMO System Using MGDM [PDF]

open access: yes, 2014
In current local area networks, multimode fibers (MMFs), primarily graded index (GI) MMFs, are the main types of fibers employed for data communications.
Aggoun, A.   +4 more
core   +6 more sources

Multiple-Input Multiple-Output (MIMO) Linear Systems Extreme Inputs/Outputs

open access: yesShock and Vibration, 2007
A linear structure is excited at multiple points with a stationary normal random process. The response of the structure is measured at multiple outputs. If the autospectral densities of the inputs are specified, the phase relationships between the inputs
David O. Smallwood
doaj   +1 more source

Full-Duplex in Massive Multiple-Input Multiple-Output

open access: yesIEEE Open Journal of Vehicular Technology
In-band full-duplex (FD) operation can double the spectral efficiency of massive multiple-input multiple-output (mMIMO) systems by allowing simultaneous transmission and reception over the same time/frequency slot. However, the main challenge encountered
Tho Le-Ngoc   +8 more
doaj   +1 more source

Downlink Multiple Input Multiple Output Mixed Sparse Code Multiple Access for 5G System

open access: yesIEEE Access, 2018
For downlink multiple-input multiple-output-sparse code multiple access (MIMO-SCMA) system, the convergence reliability of the detected codeword in each decision process is unsatisfactory at the message passing algorithm receiver. To address this problem,
Cheng Yan, Ningbo Zhang, Guixia Kang
doaj   +1 more source

Neutralization Line Decoupling Tri-Band Multiple-Input Multiple-Output Antenna Design

open access: yesIEEE Access, 2020
A pair of tri-band multiple-input-multiple-output (MIMO) antennas with high isolation is investigated in this paper. The proposed antenna consists of two monopole antenna elements with an edge to edge spacing of 4 mm ($0.03~\lambda _{0}$ at 2.3 GHz). The
Ruipeng Liu   +5 more
doaj   +1 more source

Real‐time capable multiple‐input–multiple‐output SONAR systems—An algorithmic approach

open access: yesIET Radar, Sonar & Navigation, 2021
In recent years, significant effort has been allocated to research on multiple‐input–multiple‐output (MIMO) sound navigation and ranging (SONAR) and RADAR systems.
Thorben Kaak   +2 more
doaj   +1 more source

Multi-Access Edge Computing (MEC) Based on MIMO: A Survey

open access: yesSensors, 2023
With the rapid development of wireless communication technology and the emergence of intelligent applications, higher requirements have been put forward for data communication and computing capacity.
Mengyu Zhu   +3 more
doaj   +1 more source

Multiple-Input Multiple-Output Gaussian Broadcast Channels with Common and Confidential Messages

open access: yes, 2009
This paper considers the problem of the multiple-input multiple-output (MIMO) Gaussian broadcast channel with two receivers (receivers 1 and 2) and two messages: a common message intended for both receivers and a confidential message intended only for ...
Liang, Yingbin, Liu, Tie, Ly, Hung D.
core   +1 more source

Coherent Optical Multiple-Input Multiple-Output communication

open access: yesIEICE Electronics Express, 2004
We propose and demonstrate the Coherent Optical Multiple-Input Multiple-Output (COMIMO) communication technique. In analogy to the spatial diversity in wireless communication, the concept exploits the modal diversity, inherent in a multi-mode fiber (MMF), to transmit independent data channels through a single fiber without the need for wavelength ...
Rick C. J. Hsu   +2 more
openaire   +2 more sources

Miniaturized inverted ultra‐wideband multiple‐input multiple‐output antenna with high isolation

open access: yesElectronics Letters, 2021
For the ultra‐wideband (UWB) transmission requirements in wireless communication systems and better miniaturization of mobile terminal antennas, a compact UWB multiple‐input multiple‐output (MIMO) antenna with higher isolation between units is proposed ...
Jing‐Chang Nan   +3 more
doaj   +1 more source

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