Showing papers by "Mohsen Kavehrad published in 2011"
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10 Jul 2011TL;DR: Improvements achievable with MIMO FSO systems are presented and further studies are presented on how to improve the quality and efficiency of these systems.
Abstract: FSO communications can provide secure broadband air-to-ground communications links. Enormous data rates are available under clear weather; but atmospheric phenomena can dramatically degrade performance. Here, achievable performance improvements of MIMO FSO systems are presented.
1 citations
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TL;DR: It is demonstrated in details that a high-capacity IFE visible light system communicating over existing power-lines (VLC/PLC) may lead to savings in many areas through reduction of size, weight and energy consumption.
Abstract: This paper focuses on leveraging the progress
in semiconductor technologies to facilitate production
of efficient light-based in-flight entertainment
(IFE), distributed sensing, navigation and control systems.
We demonstrate the ease of configuring "engineered
pipes" using cheap lenses, etc. to achieve simple
linear transmission capacity growth. Investigation of
energy-efficient, miniaturized transceivers will create a
wireless medium, for both inter and intra aircrafts, providing
enhanced security, and improved quality-of-service
for communications links in greater harmony
with onboard systems. The applications will seamlessly
inter-connect multiple intelligent devices in a network
that is deployable for aircrafts navigation systems, onboard
sensors and entertainment data delivery systems,
and high-definition audio-visual broadcasting systems.
Recent experimental results on a high-capacity infrared
(808 nm) system are presented. The light source can be
applied in a hybrid package along with a visible lighting
LED for both lighting and communications. Also,
we present a pragmatic combination of light communications
through "Spotlighting" and existing onboard
power-lines. It is demonstrated in details that a high-capacity
IFE visible light system communicating over
existing power-lines (VLC/PLC) may lead to savings in
many areas through reduction of size, weight and energy
consumption. This paper addresses the challenges
of integrating optimized optical devices in the variety
of environments described above, and presents mitigation
and tailoring approaches for a multi-purpose optical
network.
1 citations