• No results found

Summary of different underwater optical wireless communications

Investigation of Underwater Optical Wireless Communications with Turbulence

Investigation of Underwater Optical Wireless Communications with Turbulence

...      III. S IMULATION R ESULTS A. PDF Distributions The model used in [7] was based on the interaction of propagating photons with the consecutive turbulent cells with different refractive indices and ...

6

Underwater optical wireless communications : depth dependent variations in attenuation

Underwater optical wireless communications : depth dependent variations in attenuation

... an underwater communication link shall be discussed in Section 3, where the relationship between the attenuation coefficient and chlorophyll concentration is determined ...

8

Impact of receiver field of view on underwater optical wireless communications

Impact of receiver field of view on underwater optical wireless communications

... III. S YSTEM MODEL A. Simulation setup Monte Carlo simulation is used to model the diffuse underwater channel where the light beam is modelled as the continuous propagation of a large group of photons. A set of ...

5

Analysis and Simulation of Link Performance for Underwater Wireless Optical Communications

Analysis and Simulation of Link Performance for Underwater Wireless Optical Communications

... of underwater wireless communications in laboratory or experimental ...an optical communication system using Ar+ laser and Photomultiplier tube (PMT) which can achieve 50Mbits/s data ...

6

Underwater Wireless Optical Communication

Underwater Wireless Optical Communication

... technology, Underwater wireless optical communication are the best emerging solutions for broadband links in oceans and ...an underwater channel are not radio signals, since electro-magnetic ...

6

Underwater optical wireless sensor network

Underwater optical wireless sensor network

... for different transmission rate As seen, the round trip time decreases when data transmission rate ...free communications. As the optical wireless communication link has been used mostly for ...

207

Optical property variability in the underwater optical wireless channel

Optical property variability in the underwater optical wireless channel

... inherent optical properties become a function of ...the communications link, as was implemented in ...inherent optical properties in this equation were written in vector form which depends on the ...

215

Underwater Optical Wireless Communications Link for Short-Range Data Transmission: A Proof of Concept Study

Underwater Optical Wireless Communications Link for Short-Range Data Transmission: A Proof of Concept Study

... Established Underwater Networks Electronic data transfer has become essential in nearly all facets of science, industry, and daily ...more underwater data transfer ...of underwater oil and natural ...

163

Simulation of Multimodal Optical and Acoustic Communications in Underwater Networks

Simulation of Multimodal Optical and Acoustic Communications in Underwater Networks

... Autonomous Underwater Vehicle ...and optical communications together in a multi-modal hybrid network: the most appropriate physical layer is chosen according to the quality of the transmissions that ...

7

Impulse response modeling for underwater optical wireless channels

Impulse response modeling for underwater optical wireless channels

... In underwater optical wireless communication (UOWC) channels, impulse response is widely used to de- scribe the temporal dispersion of the received ...of different kinds of UOWC channels. © ...

9

A Hybrid of Optical and Wireless Communications System

A Hybrid of Optical and Wireless Communications System

... reliable communications within a large room, antennas must have a relatively high ...of wireless communications at data rates of several Gbps in different configurations, especially in non ...

7

Spectrum Scarcity and Optical Wireless Communications

Spectrum Scarcity and Optical Wireless Communications

... Gbit/s underwater wireless optical communications using directly modulated 520 nm laser diode", Optics Express, August ...for underwater wireless optical communication", ...

63

Optical Wireless Communications - An Emerging Technology

Optical Wireless Communications - An Emerging Technology

... of different beam shapes and types has been extensively investigated [P41, P43, P189, P190, P191, P192, P197, P198, P199, P201, P202, ...in different environments and with different set ups [2-ID5, ...

36

Cellular Underwater Wireless Optical CDMA Network: Potentials and Challenges

Cellular Underwater Wireless Optical CDMA Network: Potentials and Challenges

... CENTRALIZED UNDERWATER OPTICAL SENSOR NETWORKS In the centralized sensor network based on UW-OCDMA, each sensor employs its assigned OOC to encode and transmit its measured data to the nearby OBTS which may ...

16

Comparison of Different Communication Channels for Underwater Wireless Sensor

Comparison of Different Communication Channels for Underwater Wireless Sensor

... of different communication channels required for efficient exchange of information via underwater wireless sensor ...an underwater sensor ...adopting different communication carriers ...

7

OPTICAL wireless (OW) communications, also known

OPTICAL wireless (OW) communications, also known

... include wireless communication theory, digital communications over fading channels, cooperative communications, wireless optical communications, and underwater ...

6

Optical Wireless Communications: Current and Future Trends

Optical Wireless Communications: Current and Future Trends

... . In other words, as the frequency increases so does the path loss. Figure 4: Path loss Vs distance (d) for different values of λ . In indoor, the channel can be described based on the number of surfaces, type of ...

6

Light emitting diodes and lasers for high-speed underwater optical communications

Light emitting diodes and lasers for high-speed underwater optical communications

... complex optical parts nor precise alignment despite the challenging underwater ...a wireless data link within a volume of water, such as a ship broadcasting to multiple divers or, remotely-operated ...

14

A Megahertz Retroreflecting MEMS Fabry Perot Modulator for Underwater Optical Communications.

A Megahertz Retroreflecting MEMS Fabry Perot Modulator for Underwater Optical Communications.

... of the resonant peaks decreases and the high frequency resonances drop in magnitude significantly. At the lowest pressure in Figure 5.18 most of the resonant peaks, especially at high frequencies, have a very high Q or ...

135

Modelling and characterisation of short range underwater optical wireless communication channels

Modelling and characterisation of short range underwater optical wireless communication channels

... 59 function (pdf) of the radiation pattern of the source. The initial position of the photon is defined by its coordinate, x, y and z and the direction vector 𝜇 𝑥 , 𝜇 𝑦 and 𝜇 𝑧 . Then it will move by a step size, s where ...

250

Show all 10000 documents...

Related subjects