An optical CDMA system based on chaotic sequences
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Abstract:
In this paper, a coherent asynchronous optical code division multiple access (OCDMA) system is proposed, whose encoder/decoder is an all-optical generator. This all-optical generator can generate analog and bipolar chaotic sequences satisfying the logistic maps. The formula of bit error rate (BER) is derived, and the relationship of BER and the number of simultaneous transmissions is analyzed. Due to the good property of correlation, this coherent OCDMA system based on these bipolar chaotic sequences can support a large number of simultaneous users, which shows that these chaotic sequences are suitable for asynchronous OCDMA system.
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This work has been supported by the National Natural Science Foundation of China （No.51244003）, and the Scince and Technology Research Project of the Education Department of Henan Province （No. 12B510012 ）.
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