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Proceedings Paper

Performance comparison of 2-D time-wavelength and coherent time-spreading OCDMA systems
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Paper Abstract

We compared the theoretical bit-error-rate (BER) and throughput performance limits of 2-D time-wavelength and coherent time-spreading optical code division multiple access (OCDMA) communication systems. The results show that the BER performance of the coherent time spreading OCDMA scheme is much superior to 2-D time wavelength scheme in the multiple access interference (MAI) noise limited case without considering beat noise, and the beat noise affects the system performance seriously and appears as a dominant source of noise for the two kinds of OCDMA systems. Nevertheless, the 2-D time wavelength scheme has better tolerance to beat noise than coherent time spreading OCDMA scheme, and the superiority is more apparent with the increasing of the code length N. While the coherent time spreading scheme has higher peak throughput, and it supports a higher throughput than the 2-D time wavelength scheme at higher offered loads.

Paper Details

Date Published: 11 November 2008
PDF: 5 pages
Proc. SPIE 7136, Optical Transmission, Switching, and Subsystems VI, 71364B (11 November 2008); doi: 10.1117/12.803592
Show Author Affiliations
Xiaogang Chen, China Three Gorges Univ. (China)
Dexiu Huang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7136:
Optical Transmission, Switching, and Subsystems VI
Ken-ichi Kitayama; Pierpaolo C. Ghiggino; Kim Roberts; Yikai Su, Editor(s)

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