Indoor broadband optical wireless communications: optical subsystems designs and their impact on channel characteristics

With proper system design, infrared multispot diffusing (MSD) configuration communications links promise several orders of magnitude higher bit rates than radio links. Essential to the communications system are the optical subsystems: transmitter and receiver optics. Preliminary experiments on fabri...

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Bibliographic Details
Published in:IEEE wireless communications 2003-04, Vol.10 (2), p.30-35
Main Authors: Kavehrad, M., Jivkova, S.
Format: Article
Language:English
Subjects:
Applied sciences
Bit rate
Broadband communication
Channels
Communication systems
Diffusion rate
Exact sciences and technology
Holographic optical components
Holographic optical elements
Holography
Links
Optical design
Optical fiber communication
Optical receivers
Optical transmitters
Radio transmitters
Receivers
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Transmitters
Wireless communication
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Description
Summary:With proper system design, infrared multispot diffusing (MSD) configuration communications links promise several orders of magnitude higher bit rates than radio links. Essential to the communications system are the optical subsystems: transmitter and receiver optics. Preliminary experiments on fabrication of beamshaping optical elements for the transmitter and receiver optical front-end have been conducted. The impact of optical subsystems on channel characteristics is investigated, and the results undoubtedly prove the great potential of MSDC. Use of holographic optical elements at both transmitter and receiver increases the signal-to-noise ratio by at least 11 dB and at the same time significantly improves the power budget of the system by reducing path loss by more than 6 dB.
ISSN:1536-1284
1558-0687
DOI:10.1109/MWC.2003.1196400