Search:
Computing and Library Services - delivering an inspiring information environment

Performance of Di-code Pulse Position Modulation Technique in Diffuse Indoor Wireless Optical Communication Systems

Buhafa, Adel M and Sibley, Martin J.N. (2010) Performance of Di-code Pulse Position Modulation Technique in Diffuse Indoor Wireless Optical Communication Systems. In: Future Technologies in Computing and Engineering: Proceedings of Computing and Engineering Annual Researchers' Conference 2010: CEARC’10. University of Huddersfield, Huddersfield, p. 188. ISBN 9781862180932

[img]
Preview
PDF - Cover Image
Download (1183kB) | Preview
    [img]
    Preview
    PDF (Poster) - Presentation
    Download (2867kB) | Preview

      Abstract

      The bandwidth of the indoor optical wireless Pulse Position Modulation (PPM) system can be
      exploited to improve the receiver sensitivity by using Di-code Pulse Position Modulation (Di-PPM)
      technique. This paper analysis the receiver sensitivity of indoor optical wireless Di-PPM systems, over a slightly dispersive channel, uses a bandwidth-limited PIN-bipolar (PINBJT) optical receiver, zero guard interval and pre-detection filter based on a simple third-order Butterworth filter, that authorizes the receiver to operate over channels with bandwidth as low as 1.2 times the bit rate. The received pulse shape is a convolution between the impulse response of a diffuse optical wireless link in a ceiling bounce model and rectangular waveform, the operating bit-rate chosen is 100Mbit/s. In this paper the performance analysis is extended in order to include the effects of intersymbol interference
      (ISI) on error probability and some important errors: wrong slot, erasure and false alarm. A
      mathematical model is then presented showing how the transfer function of the indoor optical wireless Di-PPM receiver can be calculated. Results are obtained and the pulse shape at input of receiver decision device is illustrated by using MathCAD software.

      Item Type: Book Chapter
      Uncontrolled Keywords: Indoor optical wireless, PPM, Di-PPM
      Subjects: T Technology > T Technology (General)
      T Technology > TA Engineering (General). Civil engineering (General)
      Schools: School of Computing and Engineering
      School of Computing and Engineering > Computing and Engineering Annual Researchers' Conference (CEARC)
      School of Computing and Engineering > Systems Engineering Research Group
      Related URLs:
      Depositing User: Sharon Beastall
      Date Deposited: 14 Jan 2011 11:27
      Last Modified: 14 Jan 2011 11:27
      URI: http://eprints.hud.ac.uk/id/eprint/9342

      Document Downloads

      Downloader Countries

      More statistics for this item...

      Item control for Repository Staff only:

      View Item

      University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©