DocumentCode :
3094570
Title :
A semi-classical analysis of optical code division multiple access
Author :
Brady, D. ; Verdu, S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
fYear :
1990
fDate :
25-27 July 1990
Firstpage :
43
Lastpage :
44
Abstract :
The exact error rate has been derived for the noncoherent, optical matched-filter CDMA receiver, which decides for the data of a single user by comparing a photoelectron count to a threshold. The analysis is valid for arbitrary quantum efficiencies, binary signature sequences, random gain distributions, and dark currents, and it is broad in application. Single-user demodulation based on a conditionally compound-Poisson observation has been considered, focusing on the special case of prime codes, equal energies, and utility-gain photodetectors. It has been found that the approximation of perfect optical-to-electrical conversion yields poor estimates of the error rate and optimal threshold at moderate incident optical intensities and dark currents. Further, the combined approximation of perfect optical-to-electrical conversion and Gaussian-distributed MAI yields an underestimate of the optimal threshold and an error rate that is neither an upper nor a lower bound.<>
Keywords :
code division multiple access; optical communication; receivers; CDMA receiver; Gaussian-distributed MAI; binary signature sequences; conditionally compound-Poisson observation; dark currents; equal energies; error rate; noncoherent optical matched filter receiver; optical code division multiple access; optical-to-electrical conversion; photoelectron count; prime codes; quantum efficiencies; random gain distributions; semi-classical analysis; single user demodulation; threshold; utility-gain photodetectors; Contracts; Dark current; Error analysis; Gaussian processes; Multiaccess communication; Optical fibers; Optical network units; Performance analysis; System performance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Optical Multiple Access Networks, 1990. Conference Digest. LEOS Summer Topical on
Conference_Location :
Monterey, CA, USA
Type :
conf
DOI :
10.1109/OMAN.1990.205430
Filename :
205430
Link To Document :
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