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Proceedings Paper

Performance of a 10 Gbps QoS-based buffer in a FSO/RF IP network
Author(s): Robert Peach; Geoff Burdge; Fred Reitberger; Chris Visone; Mike Oyler; Curtis Jensen; Jerry Sonnenberg
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Paper Abstract

A 10 Gbps aperture agnostic data buffer has been developed to mitigate packet loss over highly scintillated FSO links operating in a hybrid FSO/RF network. The buffer incorporates a custom IP packet inspection and scheduling processor. Packet buffering and transmission scheduling is determined from link availability and a QoS parameter in the IP header based upon RFC 2474 (Differentiated Services). Buffer metric parameters are monitored and could be provided to the network management system. Integration of the novel buffer into the FSO link along with improved network routers allows operation under strong scintillation conditions at fade margins as low as 8 dB. We present the salient performance characteristics of a buffered FSO modem with VOA-emulated atmospheric fading statistics. Application test cases, including a TCP/IP MPEG-4 video stream, have been emulated both to determine the effects of packet loss, latency and intra-packet jitter introduced by buffering and to optimize traffic flow settings.

Paper Details

Date Published: 12 August 2010
PDF: 12 pages
Proc. SPIE 7814, Free-Space Laser Communications X, 781402 (12 August 2010); doi: 10.1117/12.859257
Show Author Affiliations
Robert Peach, Harris Corp. (United States)
Geoff Burdge, Harris Corp. (United States)
Fred Reitberger, Harris Corp. (United States)
Chris Visone, Harris Corp. (United States)
Mike Oyler, Harris Corp. (United States)
Curtis Jensen, Harris Corp. (United States)
Jerry Sonnenberg, Harris Corp. (United States)

Published in SPIE Proceedings Vol. 7814:
Free-Space Laser Communications X
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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