Title :
Performance comparison of asynchronous and synchronous code-division multiple-access techniques for fiber-optic local area networks
Author :
Kwong, Wing C. ; Perrier, Philippe A. ; Prucnal, PAul R.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
Synchronous code-division multiple access (S/CDMA) is investigated for fiber-optic local area networks. It is shown that the large bandwidth expansion required by spread-spectrum techniques, such as CDMA, can be accommodated by using a fiber-optic channel for transmission and incoherent optical signal processing for code generation and correlation. Prime sequence codes, previously developed for a fiber-optic network using (asynchronous) CDMA, are modified to fit a synchronous transmission format. A performance comparison of CDMA and S/CDMA systems reveals that S/CDMA can accommodate a larger number of subscribers and more simultaneous users than CDMA. An environment for which S/CDMA would be suited is discussed
Keywords :
code division multiple access; local area networks; optical information processing; optical links; spread spectrum communication; synchronisation; LAN; S/CDMA; asynchronous CDMA; code generation; code-division multiple-access; correlation; fiber-optic local area networks; incoherent optical signal processing; large bandwidth expansion; prime sequence codes; spread-spectrum techniques; synchronous CDMA; Autocorrelation; Local area networks; Multiaccess communication; Optical fiber LAN; Optical fiber networks; Optical receivers; Optical signal processing; Signal generators; Spread spectrum communication; System performance;
Journal_Title :
Communications, IEEE Transactions on
