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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 25,
  • Issue 11,
  • pp. 3366-3373
  • (2007)

Performance Evaluation of a Novel Converged Architecture for Digital-Video Transmission Over Optical Wireless Channels

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Abstract

A robust channel coding architecture for multigigabit-per-second digital-video transmission over the optical wireless channel is introduced and evaluated. The proposed scheme combines low-density parity-check coding with channel interleaving to improve the transmission over turbulent temporally correlated optical wireless channels while satisfying real-time video delay constraints. Frame error rates of the presented code design are evaluated via simulation for intensity-modulation/direct-detection optical wireless links in both lognormal- and Rayleigh-fading channels. Results indicate that the performance of the proposed system is effective across a large range of atmospheric turbulence strengths and achieves significant temporal diversity in moderately long (10 ms) temporal correlation times while satisfying a 0.3-s real-time delay constraint. Moreover, the proposed design is shown to outperform the Reed–Solomon codes prevalent in the legacy fiber and wireless digital-television distribution systems.

© 2007 IEEE

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