Results 251 to 260 of about 352,534 (288)
Some of the next articles are maybe not open access.
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
openaire +1 more source
Line of Sight (LOS) Stabilization Using Disturbance Observer (DOB)
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
openaire +1 more source
An efficient ‘image-based’ indoor propagation model for line-of-sight (LOS) and non-LOS applications
IEE Colloquium on `Propagation in Buildings', 1995A three dimensional `image-based' ray tracing algorithm for indoor environments is presented. The model is capable of predicting wideband as well as narrowband propagation information for single floor scenarios. To show the practicality of such a model, the ray tracing engine has been used to investigate a typical indoor environment.
Athanasiadou, GE, Nix, AR, McGeehan, JP
openaire +2 more sources
Test and Measurement on a 60 GHz Line of Sight (LOS) Communication Link
IETE Technical Review, 2003To design and implement a 60 GHz based Multimedia Mobile Communication (MMC) system, we wish to incorporate the latest state-of-art Digital Video Broadcasting (DVB) and Spread Spectrum/Code Division Multiple Access (SS/CDMA) technologies. Accordingly, we have studied experimentally those two technologies through experimentation at C-band systems, not ...
R Bera, Sanjib Sil, H Sarkar, J Bera
openaire +1 more source
Performance Evaluation of Line of Sight (LoS) in Mobile Ad hoc Networks
2020The era of multimedia communication is a major part and partial of each and every user life each task now depends very much on the Internet. Line-of-sight is the biggest problem many are facing, while using Internet. In particular, the problem of mobile station tracking at various base stations is considered.
C. R. Chethan +2 more
openaire +1 more source
Rain fade margin of terrestrial line-of-sight (LOS) links for 5G networks in Peninsular Malaysia
International Journal of Microwave and Wireless Technologies, 2021AbstractAdvanced telecommunication systems are moving toward a high data transfer rate and wider bandwidth. The 5G communication network has recently been implemented for such aims. However, 5G networks operating with high operating frequency (typically above 20 GHz) could lead to impairments because of the atmospheric phenomena mainly precipitation ...
Shi Jie Seah +3 more
openaire +2 more sources
Voice Delivery using The Visible Light Communication (VLC) Prototype on Line of Sight (LOS) Channels
2020 6th International Conference on Science in Information Technology (ICSITech), 2020Visible Light Communication (VLC) is the one of technologies used for 6th generation of telecommunications (6G), because it has a wide frequency spectrum, higher speed and safety. We have conducted an experiment using a prototype to transmit sound. Measurements were made by changing the receiving distance from 30 cm up to 300 cm in increments of 30 cm.
Dewandari Adi Antika Putri +3 more
openaire +1 more source
Parametric evaluation of line-of-sight (LOS) channel in LiFi networks
Journal of Optical CommunicationsAbstract Light Fidelity (LiFi) based on data transfer with visible light offers a more profound solution to the wireless communication paradigms. This study brings focus on how the line-of-sight (LOS) channel can be used to enhance the performance of a LiFi network.
Muhammad Subhan +4 more
openaire +1 more source
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.
openaire +1 more source
Sliding mode control based line-of-sight (LOS) stabilization of electro-optical sighting system
2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2016Electro-optical sighting systems are used for surveillance, target acquisition and tracking. The stabilization of the line of sight (LOS) against vehicle-induced disturbances is an essential feature of the electro-optical gimbaled sighting systems, mounted on mobile platforms.
Shashi Singh +3 more
openaire +1 more source