Results 251 to 260 of about 366,927 (296)
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Direct versus indirect line of sight (LOS) stabilization
IEEE Transactions on Control Systems Technology, 2003Two methods are analyzed for inertially stabilizing the pointing vector defining the line of sight (LOS) of a two-axis gimbaled laser tracker. Mounting the angular rate and acceleration sensors directly on the LOS axes is often used for precision pointing applications.
P.J. Kennedy, R.L. Kennedy
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Performance of LED for line-of-sight (LoS) underwater wireless optical communication system
Journal of Optical Communications, 2020Abstract Underwater wireless optical communications (UWOC) recently emerge as a solution to the problem of underwater communication for link with a high data rate, low delay, safety, and high immunity. In this study, the line of sight (LoS) method based on LED used for UWOC with different modulation schemes.
Alaa G. Nasser, Mazin Ali A. Ali
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Pulse detection algorithm for line-of-sight (LOS) UWB ranging applications
IEEE Antennas and Wireless Propagation Letters, 2005This paper presents an algorithm for precise determination of the distance between a pair of transmitting and receiving antennas using FCC conforming ultra-wideband (UWB) pulses. Indoor line-of-sight (LOS) measurements up to 24 m were conducted at Research Technoplaza, Nanyang Technological University, Singapore.
Z.N. Low +4 more
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Precoding for MIMO Systems in Line-Of-Sight (LOS) Environment
IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, 2007In line-of-sight (LOS) environments, the signal detection of multiple-input multiple-output (MIMO) systems becomes difficult because the correlation among channels becomes higher when the phase differences of direct paths are close to each other. In this paper, we propose a MIMO system with precoding to maximize the minimum distance (denoted hereafter ...
Kenichi Kobayashi +2 more
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Line of Sight (LoS) Underwater Wireless Optical Communication Based on LED
2018 9th International Symposium on Telecommunications (IST), 2018In this paper, we propose a communication system for an underwater environment based on the LED. Different modulation techniques examined under pure and coastal water. A BER analyzed to assess the system with a different situation. The simulation results indicate that a LED can be operated with a good received information quality under pure sea water ...
Mazin Ali A. Ali, Saad Khalid Rahi
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A statistical model for line-of-sight (LOS) factory radio channels
IEEE 39th Vehicular Technology Conference, 2003A statistical model, based on experimental data, is presented to characterize the multipath propagation medium in typical manufacturing environments. This model includes the statistics of multipath propagation characteristics for cases of light and heavy clutter in a factory where there is a direct path from transmitter to receiver.
P. Yegani, C.D. McGillem
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Line of Sight (LOS) Stabilization Using Disturbance Observer (DOB)
Sustainable Communication Networks and Application, 2019The Line Of Sight (LOS) electro-optical sighting system based on gyroscopic stabilized gimbal staging is difficult to control because of the non-linearities, friction, disturbances and many other unknown parameters associated with the outside environment.
Akansha Rautela, R. P. Chauhan
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MIMO Channel Capacity in an Indoor Line-Of-Sight (LOS) Environment
IEICE Transactions on Communications, 2005The effect of antenna correlation on the Multiple-Input Multiple-Output (MIMO) channel capacity in the real propagation environment is a topic of interest. In this paper, we present the results of a measurement campaign conducted in an indoor Line-Of-Sight (LOS) office environment.
K. Sakaguchi +2 more
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2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754), 2005
The paper present the results of a multiple-input multiple-output (MIMO) channel capacity measurement experiment conducted in an indoor line-of-sight (LOS) office environment. Channel responses were taken systematically with varying distance in a static indoor environment. Results showed measurements with high received signal-to-noise ratio (SNR) and a
C.H.Y. Eugene, K. Sakaguchi, K. Araki
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The paper present the results of a multiple-input multiple-output (MIMO) channel capacity measurement experiment conducted in an indoor line-of-sight (LOS) office environment. Channel responses were taken systematically with varying distance in a static indoor environment. Results showed measurements with high received signal-to-noise ratio (SNR) and a
C.H.Y. Eugene, K. Sakaguchi, K. Araki
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Journal of optical communications, 2021
In this paper, a theoretical investigation was suggested to study underwater wireless optical communication (UWOC) system based on multiple input–multiple output (MIMO) technique.
Mustafa B. Al-Deen, M. Ali, Z. Saleh
semanticscholar +1 more source
In this paper, a theoretical investigation was suggested to study underwater wireless optical communication (UWOC) system based on multiple input–multiple output (MIMO) technique.
Mustafa B. Al-Deen, M. Ali, Z. Saleh
semanticscholar +1 more source