IEEE Journal of Selected Topics in Quantum Electronics · 2007 · 43 citations · 17 references
EngineeringCommunicationElectrical EngineeringDigital CommunicationOptoelectronicsPhotonicsCoding TheoryFiber OpticsFiber-optic CommunicationOptical Communication SystemsOptical ModulationOptical Signal ProcessingCode Division Multiple AccessCoherent Optical CommunicationFiber Bragg GratingsFiber Optic Communication SystemsOptical Code Division Multiple AccessOptical Transmission SystemsThreshold SettingThresholding
An optical code division multiple access (OCDMA) system with coherent coding, code shift keying (CSK) data modulation, and balanced detection (CSK OCDMA) is proposed and theoretically investigated in this paper. The proposed scheme has better multiuser capability, simpler threshold setting in the receiver, and particularly, enhanced security compares with conventional OCDMA systems. A multiuser CSK-OCDMA system with 511-chip superstructure fiber Bragg gratings and a multiport encoder/decoder (E/D) pair was experimentally demonstrated. A bit-error-rate of less than 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-9</sup> was achieved with up to ten and eight active users at data rates of 1.25 and 10.7 Gb/s, respectively, without any forward-error-correction or optical thresholding. The multiport E/D was used in a novel configuration to process multidimensional optical codes.
17
The role of optical CDMA in access networks
A. Stok, Edward H. Sargent · IEEE Communications Magazine · 2002 · 286 citations
P.C. Teh, Periklis Petropoulos, M. Ibsen et al. · Journal of Lightwave Technology · 2001 · 186 citations
Engineering, Computer Engineering, Electrical Engineering +15