A novel asynchronous hybrid duty-cycle division multiplexing/optical code division multiple access system

Saleh Seyedzadeh, Ghafour Amouzad Mahdiraji, Shee Yu Gang, Faisal Rafiq Mahamd Adikan, Majid H. Kakaee

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)

Abstract

The growing demand for larger optical bandwidth and new services rises the need for efficient multiplexing techniques. Recently, hybrid optical code division multiple access (OCDMA) systems have been developed in order to expand the capacity of optical networks. In this paper a new asynchronous hybrid duty-cycle division multiplexing (DCDM) spectral amplitude coding (SAC) OCDMA system is proposed. In the proposed system, each code-word of SAC-OCDMA carries 2-channel DCDM where each user is operating at data rate of 622 Mb/s which forms 3 × 2 × 0.622 Gb/s optical system. In hybrid DCDM/OCDMA system, users are first electrically multiplexed using different duty-cycles and then optically coded using multiple wavelengths. The performance of users with different duty-cycles are optimized by controlling the electrical amplitude levels. Results show that the bit error rate of 10-9 for worst user is achieved at received power per chip of -22.5 dBm. Performance of proposed DCDM/OCDMA system operating at high speed data rate (i.e. 40 Gb/s per OCDMA channel) is also demonstrated.
Original languageEnglish
Title of host publication2014 7th International Symposium on Telecommunications (IST)
Place of PublicationPiscataway, N.J.
PublisherIEEE
ISBN (Print)978-1-4799-5360-8
DOIs
Publication statusPublished - 8 Jan 2015
Event2014 IEEE 2nd International Symposium on Telecommunication Technologies - Langkawi, Malaysia
Duration: 24 Nov 201426 Nov 2014
Conference number: 2nd

Conference

Conference2014 IEEE 2nd International Symposium on Telecommunication Technologies
Abbreviated titleISTT2014
CountryMalaysia
CityLangkawi
Period24/11/1426/11/14

Keywords

  • bit error rate
  • optical fiber networks
  • adaptive optics

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