Performance analysis of packet layer FEC codes and interleaving in FSO channels

Junnan Liu, Xingjun Zhang, Keith Blow, Scott Fowler

Research output: Contribution to journalArticle

Abstract

The combination of forward-error-correction (FEC) and interleaving can be used to improve free-space optical (FSO) communication systems. Recent research has optimized the
codeword length and interleaving depth under the assumption of a fixed buffering size, however, how the buffering size influences the system performance remains unsolved. This paper models the system performance as a function of buffering size and FEC recovery threshold, which allows system designers to determine optimum parameters in consideration of the overhead. The modelling is based on statistics of temporal features of correct data reception and burst error length through the measurement of the channel good time and outage time. The experimental results show good coherence with the theoretical values. This
method can also be applied in other channels if a Continuous-Time-Markov-Chain (CTMC) model of the channel can be derived
Original languageEnglish
Pages (from-to)2042-2048
JournalIET Communications
Volume11
Issue number13
Early online date20 Jun 2017
DOIs
Publication statusE-pub ahead of print - 20 Jun 2017

Bibliographical note

This paper is a postprint of a paper submitted to and accepted for publication in [journal] and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library

Funding: Designing Future Optical Wireless Communication
Networks funded under the Marie Curie International Research Staff Exchange Scheme Actions of the European Union Seventh Framework Program [EU-FP7 Contract No. 318906];
the National Key Research and Development Plan of China [Grant No. 2016YFB0200902]; and the National Natural Science Foundation of China project [Grant No. 61572394].

Keywords

  • FEC codeword length
  • interleaving depth
  • FSO communication
  • CTMC model

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