NDLI: An optimal chip-level OCDMA detector by using photon counting

Content Provider	IEEE Xplore Digital Library
Author	Shaw Kok Ying Zhang Yeng Soh
Copyright Year	1972
Abstract	This paper studies the optimal bit error rate (BER) performance of chip-level detection for optical code division multiple-access (OCDMA) systems in the presence of shot noise. To attain the optimal BER of chip-level detection, a chip-level detector that uses a limiter on the photon counts at each weighted chip is first proposed. Then, the monotonicity of the likelihood ratio used in the maximum a posteriori (MAP) probability criterion is established. With this monotonicity, a sufficient condition characterized by the cap levels of the limiters and the average photon counts per pulse is obtained, under which the detector is simply an AND detector to attain the optimal BER of chip-level detection. The detector' performance and its comparison to those of other detectors are also studied by numerical studies.
Starting Page	141
Ending Page	149
Page Count	9
File Size	360070
File Format	PDF
ISSN	00906778
Volume Number	57
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bit error rate Optical noise Gunshot detection systems Multiaccess communication Optical detectors Sufficient conditions Optical pulses Optical fiber networks Optical fiber communication Data mining CDMA, optical communication, optimal detection
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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