Free space optics supporting multi user communications for wireless mesh networks

Belal Y. Hamzeh, Mohsen Kavehrad

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


For free space optics to support multi user communications, multi-access schemes need to be incorporated. Conventional asynchronous optical code division multiple access (OCDMA) using optical orthogonal codes (OOCs) cannot deliver the required performance due to code interference, which sets a lower bound on the achievable bit error rate. Thus we introduce the use of complementary Walsh Hadamard codes as a promising solution to support synchronous OCDMA, capable of achieving required performance due to inherent interference cancellation, in addition to supporting a higher number of users while maintaining short code lengths, and alleviating some of the stringent requirements on the receiver hardware.

Original languageEnglish (US)
Article number19
Pages (from-to)217-226
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Dec 1 2004
EventPerformance, Quality of Service, and Control of Next-Generation Communications Networks II - Philadelphia, PA, United States
Duration: Oct 26 2004Oct 27 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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