NDLI: Adaptive multibeam clustering angle diversity optical wireless system

Content Provider	IEEE Xplore Digital Library
Author	Alsaadi, F.E. Elmirghani, J.M.H.
Copyright Year	2010
Description	Author affiliation: School of Electronic & Electrical Engineering, University of Leeds, LS2 9JT, UK (Alsaadi, F.E.; Elmirghani, J.M.H.)
Abstract	In this paper, we propose a novel mobile optical wireless (OW) system that employs an adaptive beam clustering method (ABCM) to improve system performance. The main goal is to increase the received optical power, reduce the effect of intersymbol interference (ISI), and improve the signal-to-noise ratio (SNR) when the system operates under the constraints of Background noise, multipath dispersion, and mobility. Our proposed system (adaptive beam clustering transmitter with diversity receiver) is evaluated at 50 Mbit/s to enable comparison with previous work, and is also assessed at higher bit rates: 2.5 Gbit/s and 5 Gbit/s. Simulation results show that at a bit rate of 50 Mbit/s, a significant SNR improvement of 15 dB is achieved when an ABCM system replaces a line strip multibeam system (LSMS) at a 6 m transmitter-receiver horizontal separation. This SNR improvement can be used to reduce the transmit power at this bit rate (50 Mbit/s). The results also show that the angle diversity ABCM system increases the channel bandwidth from 37.6 MHz (a conventional diffuse system (CDS)) to 4.7 GHz. The increase in SNR and channel bandwidth is used to achieve higher data rates: 2.5 Gbit/s and 5 Gbit/s.
Starting Page	1
Ending Page	6
File Size	3721505
Page Count	6
File Format	PDF
ISBN	9781424459735
e-ISBN	9783901882401
DOI	10.1109/ONDM.2010.5431583
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-02-01
Publisher Place	Japan
Access Restriction	Subscribed
Subject Keyword	signal-to-noise ratio (SNR) Clustering methods optical wireless beam power adaptation beam clustering Optical receivers Optical transmitters System performance Bit rate Intersymbol interference Bandwidth Adaptive optics Optical noise Signal to noise ratio
Content Type	Text
Resource Type	Article

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