Outline

  • Abstract
  • Keywords
  • 1 Introduction
  • 2 Theoretical Analysis of Concatenated Code
  • 2.1 Brief Introduction of Concatenated Code
  • 2.2 Inner-Outer Concatenated Code
  • 2.3 Concatenated Code with Interleaver
  • 2.4 Error-Correction of Concatenated Code
  • 3 Improved Schemes of Fec Code in Dwdm Systems
  • 3.1 Improved Scheme of Inner-Outer Concatenated Code
  • 3.2 Improved Scheme of Parallel-Concatenated Code
  • 3.3 Improved Scheme of Consecutive Concatenated Code with Interleaver
  • 4 Conclusions
  • References

رئوس مطالب

  • چکیده
  • 1.مقدمه
  • 2. تحلیل نظری کد رهگیری
  • 1.2 معرفی مختصری از کد رهگیری
  • 2.2 کد رهگیری Inner-outer
  • 3.2 کد رهگیری با جاگذاری داخلی
  • 4.2 تصحیح خطا کد رهگیری
  • 3. روش های بهبود یافته کد FEC در سیستم های DWDM
  • 1.3 روش بهبود یافته از کد رهگیری داخلی-خارجی
  • 2.3 روش بهبود یافته ز کد رهگیری موازی
  • 3.3 طرح بهبود یافته کد رهگیری متوالی با جایگذاری
  • 4. نتایج

Abstract

The three concatenated coding schemes of the inner-outer type, the parallel type and the consecutive type to improve the current forward error correction (FEC) coding technologies are proposed for dense wavelength-division multiplexing (DWDM) systems, after introducing the development trend of DWDM optical communication systems. The concatenated code is theoretically analyzed. The theoretical analyses and simulation results show that inner-outer concatenated code has a greater redundancy and the decoding of parallel concatenated code is too complex. However, consecutive concatenated code is superior coding scheme with advantages such as better error correction performance, moderate redundancy and easy implementation, therefore it could be better used in high-speed and long-haul DWDM systems.

Keywords: - - -

Conclusions

The three improved concatenated coding schemes for the existing FEC coding technologies in DWDM systems are proposed, and the concatenated codes are theoretically analyzed in this paper. The theoretical analyses and simulation results show that the inner-outer concatenated code has a greater redundancy and the decoding of the parallel concatenated code is too complex. However, the consecutive concatenated code with the interleaver is a superior concatenated code with advantages such as better error correction performance, moderate redundancy and easy implementation, and is more suitable to be used in high speed and long-haul DWDM systems.

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