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Proceedings Paper

High-data-rate error correcting coding
Author(s): Daniel M. Castagnozzi; Jeffrey C. Livas; Edward A. Bucher; Lori L. Jeromin
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Paper Abstract

Applications such as high resolution image transmission and the aggregation of multiple bit streams have increased the interest in very high speed (Gbit/s) data communications for space applications. The ability to perform error correction on a data link can yield significant improvements in channel efficiency and can mitigate the effects of various bit error rate (BER) impairments afflicting many communications systems. A codec integrated circuit (IC) has been constructed which is capable of supporting up to 2 Gbit/s of data throughput. The device has been demonstrated in two optical communications systems, a 1 Gbit/s binary optically preamplified OOK system at 1.5 µm and an 800 Mbit/s FSK MOPA system at 0.98 µm. At a BER of 10-9, this coding provided a 3.7 dB sensitivity improvement for the OOK system, and a 6.2 dB improvement with the FSK system. The measured sensitivity of the coded OOK system was 37 photons/bit, which is better than could be realized with an ideal uncoded system. The viability of applying error correcting coding to higher data rate systems is discussed and a method of utilizing these ICs to provide four Gbit/s operation is shown.

Paper Details

Date Published: 16 August 1994
PDF: 10 pages
Proc. SPIE 2123, Free-Space Laser Communication Technologies VI, (16 August 1994); doi: 10.1117/12.184668
Show Author Affiliations
Daniel M. Castagnozzi, MIT Lincoln Lab. (United States)
Jeffrey C. Livas, MIT Lincoln Lab. (United States)
Edward A. Bucher, MIT Lincoln Lab. (United States)
Lori L. Jeromin, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 2123:
Free-Space Laser Communication Technologies VI
G. Stephen Mecherle, Editor(s)

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