نتایج جستجو برای: optical wireless communication
تعداد نتایج: 675516 فیلتر نتایج به سال:
Complementing wireless radio networks with free-space optics (FSO) achieve high data rates by modulating radio subcarriers over an optical carrier without expensive optical fiber cabling, enabling a pervasive platform for reaching underserved areas. In this paper, we review the main features of Free Space Optical Communication. Keywords— Free space Optics, NRZ, RZ, PIN, APD etc.
The Intelligent Transportation System (ITS) provides wireless and mobile communication between vehicles and infrastructure to improve the safety of transportation and make the journey more enjoyable. This system consists of many fixed and mobile nodes (Vehicles, Trains, Vessels, Air planes), Wireless and Wired Telecommunication Technologies to exchange information between mobile nodes or betwee...
In this paper, the performance of Radio on Free Space Optics (RoFSO) a cost effective and efficient method of wireless transmission that supports high data rate of communication as compared to optical fiber, whose data rate is limited by dispersion and nonlinearity is studied. The performance primarily depends on atmospheric conditions which is the recent area of study. OFDM based FSO, is a hyb...
Space-division multiplexing (SDM) uses multiplicity of space channels to increase capacity for optical communication. It is applicable for optical communication in both free space and guided waves. This paper focuses on SDM for fiber-optic communication using few-mode fibers or multimode fibers, in particular on the critical challenge of mode crosstalk. Multiple-input–multipleoutput (MIMO) equa...
SUMMARY We propose a novel channel model of satellite-to-ground optical transmission to achieve a global-scale high-capacity communication network. In addition, we compose an effective channel coding scheme based on low-density generator matrix (LDGM) code suitable for that channel. Because the first successful optical satellite communication demonstrations are quite recent, no practical channe...
SINGLE-CARRIER FREQUENCY DOMAIN EQUALIZATION USING SUBBAND DECOMPOSITION FOR OPTICAL WIRELESS COMMUNICATIONS by Di Mu Optical wireless communication is intended to be applied into indoor and visual distance high-rate data transmission, which is complementary to radio frequency communications. There are specific problems and requirements in optical wireless communications compared with radio fre...
Optical wireless links can offer a very large bandwidth and can act as a complementary technology to radiofrequency links. Optical components nowadays are however rather bulky. Therefore, we have investigated the potential of silicon photonics to fabricated integrated components for wireless optical communication. This paper presents a two-dimensional phased array antenna consisting of grating ...
Device-to-device (D2D) communication is considered a promising technique to provide wireless peer-to-peer communication services. Due to increasing demand on mobile services, available spectrum for radio frequency (RF) based communications becomes scarce. Recently, visible light communications (VLC) has evolved as a high speed wireless data transmission technology for indoor environments with a...
Optical wireless communications in the outdoor is capable of providing a broadband last mile access, and in the indoor environment it can be used to provide flexible interconnection through wireless distributed data communication systems to connect PCs, digital assistants, laptops, printers, digital cameras in offices, shopping areas, warehouses and manufacturing floors. Optical wireless commun...
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