Phase drift effects in optical CDMA

Leslie A. Rusch, H. Vincent Poor

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

1 Scopus citations


Fiber optic communication systems using CDMA have been proposed. While coherent detection is a reasonable assumption in many RF systems, semiconductor lasers for fiber applications have been shown to suffer from more serious phase variation that precludes fully coherent detection, the focus of previous CDMA research. The authors examine the effect of phase drift on several multiuser detectors for BPSK, as well as two detectors for BFSK. They show that when the desired user's phase can be tracked, BPSK match filtering offers better bit error rates than BFSK, and the authors derive closed form solutions for the error probabilities in the limit of infinitely long spreading codes modeled as a random sequence of plus and minus ones. When there is no phase tracking, they show that the probability of error of the multiuser detectors approaches one half.

Original languageEnglish (US)
Title of host publication1994 IEEE GLOBECOM - Communications
Subtitle of host publicationCommunications Theory Mini-Conference Record
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages7
ISBN (Electronic)078031820X, 9780780318205
StatePublished - 1994
Event3rd Communications Theory Mini-Conference, CTMC 1994, held in conjunction with IEEE GLOBECOM 1994 - San Francisco, United States
Duration: Nov 27 1994Dec 1 1994

Publication series

Name1994 IEEE GLOBECOM - Communications: Communications Theory Mini-Conference Record


Conference3rd Communications Theory Mini-Conference, CTMC 1994, held in conjunction with IEEE GLOBECOM 1994
Country/TerritoryUnited States
CitySan Francisco

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Signal Processing


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