| A Novel Concatenated Chaotic Communication System |
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| 作者姓名： | Zhou Xiaolin Song Wentao Wu Dijia Liu Jianbo & Luo Hanwen |
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| 作者单位： | Received August 7，2001 |
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| 基金项目： | This project was supported by the National Natural Science Foundation of China (No. 60072028). |
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| 摘 要： | A strategy for a novel concatenated chaotic communication system is presented. The transmitter system comprises chaotic turbo encoder and logistic CSK block in a serially concatenated form. Chaotic turbo code is capable of reducing bit error rate (BER) of the chaotic system in the AWGN channel. Through the chaotic turbo encoder, the coded sequence, which has quasi-chaotic properties, will be transmitted into the logistic CSK block. Having a very sensitive dependence on initial conditions of the map, the logistic CSK block can also be taken as the chaotic authentication method. The receiver, which has logistic demodulation block and chaotic decoder, is a linear asymptotic approximation to the inverse of the transmitter system. A chaotic iterative soft-decision decoding algorithm is also developed based on conventional maximum A posteriori decoding algorithm. At last, a two-step authentication method of this chaotic system is also presented.
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A Novel Concatenated Chaotic Communication System |
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| Zhou Xiaolin,Song Wentao,Wu Dijia,Liu Jianbo & Luo Hanwen.A Novel Concatenated Chaotic Communication System[J].Journal of Systems Engineering and Electronics,2002,13(2). |
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| Authors: | Zhou Xiaolin Song Wentao Wu Dijia Liu Jianbo Luo Hanwen |
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| Abstract: | A strategy for a novel concatenated chaotic communication system is presented. The transmitter system comprises chaotic turbo encoder and logistic CSK block in a serially concatenated form. Chaotic turbo code is capable of reducing bit error rate (BER) of the chaotic system in the AWGN channel. Through the chaotic turbo encoder, the coded sequence, which has quasi-chaotic properties, will be transmitted into the logistic CSK block. Having a very sensitive dependence on initial conditions of the map, the logistic CSK block can also be taken as the chaotic authentication method. The receiver, which has logistic demodulation block and chaotic decoder, is a linear asymptotic approximation to the inverse of the transmitter system. A chaotic iterative soft-decision decoding algorithm is also developed based on conventional maximum A posteriori decoding algorithm. At last, a two-step authentication method of this chaotic system is also presented. |
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| Keywords: | Concatenated chaotic communication system Chaotic turbo codes Logistic CSK modulation |
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