Rate-flexible optical CDMA networks based on coherent modulation formats

A. L. Sanches, M. Abuhelala, T. R. Raddo, S. Haxha, I. Glesk

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)
9 Downloads (Pure)


In this paper, we propose, design, and assess the performance of optical coherent access networks based on optical code-division multiple-access (OCDMA) based on three distinct coherent modulation formats, namely, BPSK, QPSK, and 16-QAM. We design a flexible network architecture based on these coherent modulation formats to provide either single data rate transmissions or multiple data rate transmissions. In this way, the network supports users with the same transmission rate, or group of users transmitting at different data rates.
We derive new close-form analytical expressions for both single and multiple rate use cases to assess the performance of the coherent OCDMA network. Results shown that the multi-rate data traffic from the users can coexist almost transparently in terms of network performance. The flexible OCDMA network might be a prospective alternative for implementing coherent systems for different service provision according to traffic demand requirements while supporting with high capacity, security, and simultaneous numbers of subscribers.
Keywords: BPSK, QPSK, 16-QAM, coherent network, BER, OCDMA
Original languageEnglish
Number of pages5
Publication statusPublished - 19 Jul 2020
Event22nd International Conference on Transparent Optical Networks ICTON 2020 - Bari, Italy
Duration: 19 Jul 202023 Jul 2020


Conference22nd International Conference on Transparent Optical Networks ICTON 2020
Abbreviated titleICTON 2020
Internet address


  • BPSQ
  • QPSK
  • 16-Quam
  • coherent network
  • BER


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