Utilization of spatial ternary coding scheme in optical CDMA system

Maw Yang Liu*, Yung Chung Wang, Shu Ming Tseng

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

Abstract

In this paper, we propose a spatial ternary coding scheme for optical code-division multiple access systems. Since the multiple access interference (MAI) and beat noise leads to the error floor effect, using error correction mechanism is a preferable manner to further enhance the system performance. The proposed spatial ternary coding scheme possesses larger free distance, which is an effective way to relieve such deteriorating effect. It is expected that more users accommodated in the network can obtain higher throughput, while the side effects of MAI and beat noise will turn out to be more serious. To further reduce such adverse impact, the optical hard-limiter is also proposed. Once the channel condition is improved, it will give rise to the more powerful utilization of error correction code. The countermeasures utilized in the proposed system can effectively fight against the MAI and beat noise, and can allow more simultaneous users accommodated in the network. Therefore, it is a promising way for future high-speed optical access networks.

Original languageEnglish
Article number280
JournalOptical and Quantum Electronics
Volume49
Issue number8
DOIs
StatePublished - 01 08 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017, Springer Science+Business Media, LLC.

Keywords

  • Optical CDMA
  • Optical access network
  • Optical hard-limiter
  • Spatial ternary coding scheme

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