NDLI: Applications and Performance of Optical Analog-to-Digital Converter and Optical Logic Gate Elements in Multilevel Multiclass Fiber-Optic CDMA Systems

Content Provider	IEEE Xplore Digital Library
Author	Ghaffari, B.M. Salehi, J.A.
Copyright Year	1995
Abstract	In this paper, we present and analyze a novel all-optical multilevel multiclass optical code division multiple access (OCDMA) system, using optical analog-to-digital converter (ADC) and advanced optical logic gate elements. In such OCDMA network, users are distributed in M different classes. Furthermore, power level with which users in class j, j = 2, ..., M, transmit optical pulses, is twice the power level at which users of class j - 1 transmit their optical pulses. We achieve optical transmitter structure that satisfies these conditions using power control schemes. Also, we suggest two receiver structures for the aforementioned multiclass multilevel system. The first and simple receiver structure is based on optical AND logic gate elements. The second structure uses an optical ADC as well as optical AND logic gates. We obtain the performance for the aforementioned two types of receivers and compare their results with the traditional one-level OCDMA system. We show that using the proposed multilevel multiclass scheme improves system performance considerably by means of decreasing error probability as well as increasing the network capacity.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1476
Ending Page	1485
Page Count	10
File Size	260054
File Format	PDF
ISSN	1077260X
Volume Number	16
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analog-digital conversion Logic gates Multiaccess communication Optical receivers Optical transmitters Optical pulses Power control Multilevel systems System performance Error probability optical logic gates Multiclass mutilevel signaling optical analog-to-digital converter (ADC) optical code division multiple access (OCDMA)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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