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Optical Engineering

Light wave transmission through free space using atmospheric laser links with adaptive equalization
Author(s): Gamal A. Hussein; Abd El-Naser A. Mohamed; Osama A. Oraby; Emad S. Hassan; Ibrahim M. Eldokany; El-Sayed M. El-Rabaie; Moawad I. Dessouky; Saleh A. Alshebeili; Fathi E. Abd El-Samie
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Paper Abstract

The utilization of adaptive equalization in the design of atmospheric laser link transceiver architectures that can be used for television and broadcast signal interconnect between the external place of event and the master control room is suggested. At the transmitter side of the proposed transceiver; an array of atmospheric laser sources, digital signal processing, and optical radiators are used to send light waves in free space. At the receiver side, an adaptive finite impulse response least mean square (LMS) equalizer with activity detection guidance (ADG) and tap decoupling (TD) is used to mitigate the effect of channel impairments. The performance of the suggested adaptive equalizer is compared with that of the conventional adaptive equalizer based only on the standard LMS algorithm. The simulation results revealed that the adaptive LMS equalizer with ADG and TD is a promising solution for the inter-symbol interference problem in optical wireless communication systems.

Paper Details

Date Published: 8 July 2013
PDF: 9 pages
Opt. Eng. 52(7) 077102 doi: 10.1117/1.OE.52.7.077102
Published in: Optical Engineering Volume 52, Issue 7
Show Author Affiliations
Gamal A. Hussein, Egyptian Radio and Television Union (Egypt)
Abd El-Naser A. Mohamed, Menoufia Univ. (Egypt)
Osama A. Oraby, Menoufia Univ. (Egypt)
Emad S. Hassan, Menoufia Univ. (Egypt)
Ibrahim M. Eldokany, Menoufia Univ. (Egypt)
El-Sayed M. El-Rabaie, Menoufia Univ. (Egypt)
Moawad I. Dessouky, Menoufia Univ. (Egypt)
Saleh A. Alshebeili, King Saud Univ. (Egypt)
Fathi E. Abd El-Samie, Menoufia Univ. (Egypt)

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