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Proceedings Paper

Non-binary LDPC-coded modulation for high-speed optical metro networks with backpropagation
Author(s): Murat Arabaci; Ivan B. Djordjevic; Ross Saunders; Roberto M. Marcoccia
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Paper Abstract

To simultaneously mitigate the linear and nonlinear channel impairments in high-speed optical communications, we propose the use of non-binary low-density-parity-check-coded modulation in combination with a coarse backpropagation method. By employing backpropagation, we reduce the memory in the channel and in return obtain significant reductions in the complexity of the channel equalizer which is exponentially proportional to the channel memory. We then compensate for the remaining channel distortions using forward error correction based on non-binary LDPC codes. We propose non-binary-LDPC-coded modulation scheme because, compared to bit-interleaved binary-LDPC-coded modulation scheme employing turbo equalization, the proposed scheme lowers the computational complexity and latency of the overall system while providing impressively larger coding gains.

Paper Details

Date Published: 22 January 2010
PDF: 9 pages
Proc. SPIE 7621, Optical Metro Networks and Short-Haul Systems II, 76210I (22 January 2010); doi: 10.1117/12.841393
Show Author Affiliations
Murat Arabaci, The Univ. of Arizona (United States)
Ivan B. Djordjevic, The Univ. of Arizona (United States)
Ross Saunders, Opnext, Inc. (United States)
Roberto M. Marcoccia, Opnext, Inc. (United States)

Published in SPIE Proceedings Vol. 7621:
Optical Metro Networks and Short-Haul Systems II
Werner Weiershausen; Benjamin Dingel; Achyut Kumar Dutta; Atul K. Srivastava, Editor(s)

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