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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 3 — Mar. 1, 2009
  • pp: 183–185

Spectral efficiency analysis of OCDMA systems

Hui Yan, Kun Qiu, and Yun Ling  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 3, pp. 183-185 (2009)


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Abstract

2 We discuss several kinds of code schemes and analyze their spectral efficiency, code utilizing efficiency, and the maximal spectral efficiency. Error correction coding is used to increase the spectral efficiency, and it can avoid the spectral decrease with the increase of the length. The extended primer code (EPC) has the highest spectral efficiency in the unipolar code system. The bipolar code system has larger spectral efficiency than unipolar code system, but has lower code utilizing efficiency and the maximal spectral efficiency. From the numerical results, we can see that the spectral efficiency increases by 0.025 (b/s)/Hz when the bit error rate (BER) increases from 10^{-1} to 10^{-7}.

© 2009 Chinese Optics Letters

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(070.4790) Fourier optics and signal processing : Spectrum analysis
(220.4830) Optical design and fabrication : Systems design
(220.4840) Optical design and fabrication : Testing

Citation
Hui Yan, Kun Qiu, and Yun Ling, "Spectral efficiency analysis of OCDMA systems," Chin. Opt. Lett. 7, 183-185 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-3-183


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