• Corpus ID: 53868456

High speed train communications systems using free space optics

  title={High speed train communications systems using free space optics},
  author={Rupak Paudel and Hoa Le Minh and Zabih Ghassemlooy and M. Iaz and Sujan Rajbhandari},
In this work, we propose a broad-band free space optical (FSO) wireless communications system for high-speed trains. The system consists of optical transceivers positioned outside the train and along the railway track. The train receivers are in the coverage area of base stations positioned along the railway track to ensure continuous link availability. In this paper, we present modelling of two cases for over-ground and underground train systems before embarking to practically implement the… 
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A gigabit/s indoor optical wireless system for Home Access Networks
  • H. L. Minh, D. O’brien, G. Faulkner
  • Computer Science, Business
    2010 7th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP 2010)
  • 2010
A bi-directional 1.25 Gbit/s system which can operate up to 4m without error under normal office lighting conditions is reported, and HD video streams were successfully transmitted between computers using the system.
The Influence of Dense Fog on Optical Wireless Systems, Analysed by Measurements in Graz for Improving the Link-Reliability
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Evaluation of coverage area for a wide line-of-sight indoor optical free-space communication system employing coherent detection [optical wireless communications]
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Performance analysis of free-space optical communication systems over atmospheric turbulence channels
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A novel technology referred as Seamless Wireless internet for Fast Trains (SWiFT) is proposed, which relies on a fast handoff mechanism by layer 2 (L2) triggering using a confidence factor (a probabilistic value evaluated by high speed movement and signal strength, to decide handoff).
Demonstration of 16 channels 10 Gb/s WDM free space transmission over 2.16 km
We present the results of 16x10 Gb/s free space optical transmission over 2.16 km. The results show that in the normal weather, the bit error rate (BER) can reach 10-8 on either sunny or cloudy days.
Recent Developments in Optical Wireless Communications using Infrared and Visible Light
  • K. Langer, J. Grubor
  • Computer Science
    2007 9th International Conference on Transparent Optical Networks
  • 2007
This contribution presents a review of infrared and visible light optical wireless indoor communications, including basics, state of the art, challenges and prospects, which show potential to achieve both high spatial coverage and high bit rates of more than 100 Mb/s.
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