Reflection detection in an optical wireless link

Details Reflection detection in an optical wireless link Reflection detection in an optical wireless link

2006-11-07

2006-11-07

Bello, Agustin (Department: 2613)

Optical communications

Optical communication over freee space

Satellite system

C398S118000, C398S122000

Reexamination Certificate

active

07133617

ABSTRACT:
In an optical wireless network, where light beams are transmitted over-the-air, reflections of the transmitted light beams may cause a receiver of an optical wireless device to detect and subsequently lock onto the signal that it transmitted. By doing so, the network is effectively broken. A method and apparatus to detect the reception of reflected signals using minimal additional hardware and data is presented. Should a reflected signal be detected, the receiver is prevented from locking onto the signal, allowing the receiver to detect and subsequently lock onto light beams originating from other optical wireless devices.

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U.S. Appl. No. 09/955,540, filed Mar. 21, 2002, Dewenter, William.

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