Emerging optical code-division multiple access communication systems
- 1 March 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Network
- Vol. 3 (2) , 31-39
- https://doi.org/10.1109/65.21908
Abstract
All-optical systems, which perform signal processing functions optically so that the signal conversion from optical to electrical is done only when desired, are considered. Three such schemes are discussed, namely, fiber-optic code-division multiple-access (CDMA) systems, neuromorphic CDMA systems, and ultrashort-light-pulse CDMA systems. Fiber-optic CDMA systems in which incoherent optical signal processing techniques are used to establish optical CDMA systems are first examined. In particular, a novel class of sequences for incoherent fiber-optic CDMA systems, called optical orthogonal codes, are discussed. The codes are then applied to neuromorphic optical systems, and various applications of the networks are examined. Recent experiments that demonstrate the ability to encode and decode extremely fast, femtosecond optical pulses and that suggest the possibility of ultrahigh-speed CDMA systems based on ultrashort light pulses are described.Keywords
This publication has 21 references indexed in Scilit:
- Optical orthogonal codes: design, analysis and applicationsIEEE Transactions on Information Theory, 1989
- High-capacity coherent lightwave systemsJournal of Lightwave Technology, 1988
- FDMA-FSK star network with a tunable optical filter demultiplexerJournal of Lightwave Technology, 1988
- Using spread-spectrum in a high-capacity fiber-optic local networkJournal of Lightwave Technology, 1988
- Multichannel coherent optical communications systemsJournal of Lightwave Technology, 1987
- Demonstration of high capacity in the LAMBDANET architecture: a multiwavelength optical networkElectronics Letters, 1987
- Spread spectrum fiber-optic local area network using optical processingJournal of Lightwave Technology, 1986
- Pattern Code Modulation and Optical Decoding - A Novel Code-Division Multiplexing Technique for Multifiber NetworksIEEE Journal on Selected Areas in Communications, 1985
- Fiber-optic lattice signal processingProceedings of the IEEE, 1984
- Crosscorrelation properties of pseudorandom and related sequencesProceedings of the IEEE, 1980