BER analysis of coherent optical CDMA communication systems with transfer function matrix |
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Authors: | Yasutaka Hiroyuki |
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Affiliation: | aDepartment of Electrical Engineering, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba-ken 278-8510, Japan;bDepartment of Management Science, Tokyo University of Science, 1-14-6 Kudan-kita, Chiyoda-ku, Tokyo 102-0073, Japan |
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Abstract: | We analyze the bit error rate (BER) of coherent optical code-division multiple-access (CDMA) communication systems with a transfer function matrix (TFM). The coherent optical CDMA is a promising system for an access network due to its advantages of asynchronous transmission, information security, multiple-access capability. TFM is defined as the Fourier transform of the impulse response of an optical fiber, which interconnects each CDMA system. TFM has parameters such as the state of polarization (SOP), phase difference, power distribution between two orthogonal modes over an optical frequency range. We first analyze the statistic of a received signal via an optical fiber with TFM, and then apply the statistic to the BER analysis. The analytical results show that BER increases with the bandwidth of a signal, and that selecting a proper center frequency leads to the BER reduction. |
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Keywords: | Coherent optical CDMA Fiber-optic communications Transfer function matrix BER analysis |
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