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Now showing items 11-17 of 17
Indoor channel modelling and characterization for visible light communications
(IEEE, 2014)
In this paper, we investigate channel modeling for visible light communications using ray tracing approach. The simulation environment is created in Zemax® and enables us to specify the geometry of the environment, the ...
Device-to-device communication in 5G cellular networks: challenges, solutions, and future directions
(IEEE, 2014-05)
In a conventional cellular system, devices are not allowed to directly communicate with each other in the licensed cellular bandwidth and all communications take place through the base stations. In this article, we envision ...
Survey on free space optical communication: a communication theory perspective
(IEEE, 2014)
Optical wireless communication (OWC) refers to transmission in unguided propagation media through the use of optical carriers, i.e., visible, infrared (IR), and ultraviolet (UV) bands. In this survey, we focus on outdoor ...
Relay-assisted OFDM transmission for indoor visible light communication
(IEEE, 2014)
In this study, we investigate a relay-assisted visible light communication (VEC) system where an intermediate light source cooperates with the main light source. Specifically, we consider two light sources in an office ...
Optical wireless communications – an emerging technology
(IEEE, 2014)
Optical wireless communication (OWC) enables wireless connectivity using infrared, visible or ultraviolet bands. With its powerful features such as high bandwidth, low cost and operation in an unregulated spectrum, OWC can ...
Optimal choice of transmission parameters for LDPC-coded CPM
(IEEE, 2014)
Continuous phase modulation (CPM) has attractive features such as spectral efficiency and constant envelope making it attractive for tactical waveforms. Serial concatenation of CPM with Low Density Parity Check Codes (LDPCs) ...
An adaptive modulation scheme for coded free-space optical systems
(IEEE, 2014)
For very slowly-varying fading channels as in the case of atmospheric turbulence-induced fading, it is possible to reliably estimate the channel state information and send it back to the transmitter. The transmitter can ...
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