| 降噪改进型多载波CDSK混沌通信系统 |
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| 引用本文： | 张刚,和华杰,张鹏. 降噪改进型多载波CDSK混沌通信系统[J]. 系统工程与电子技术, 2021, 43(5): 1389-1397. DOI: 10.12305/j.issn.1001-506X.2021.05.28 |
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| 作者姓名： | 张刚 和华杰 张鹏 |
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| 作者单位： | 1. 重庆邮电大学通信与信息工程学院, 重庆 4000652. 重庆邮电大学教务处, 重庆 400065 |
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| 基金项目： | 国家自然科学基金(61771085,61371164);重庆市教育委员会科研项目(KJ1600407,KJQN201900601)资助课题。 |
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| 摘 要： | 由于传统相关延迟移位键控(correlation delay shift keying,CDSK)系统误码率(bit error rate,BER)较高,提出一种降噪改进型多载波 CDSK(noise reduction improved multi-carrier CDSK,NR-I-MC-CDSK)混沌通信系统.在...
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| 关 键 词： | 混沌通信 相关延迟移位键控 降噪 多载波 |
| 收稿时间： | 2020-06-02 |
Noise reduction improved multi-carrier CDSK chaotic communication system |
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| ZHANG Gang,HE Huajie,ZHANG Peng. Noise reduction improved multi-carrier CDSK chaotic communication system[J]. System Engineering and Electronics, 2021, 43(5): 1389-1397. DOI: 10.12305/j.issn.1001-506X.2021.05.28 |
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| Authors: | ZHANG Gang HE Huajie ZHANG Peng |
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| Affiliation: | 1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China2. Office of Teaching Affairs, Chongqing University of Posts and Telecommunications, Chongqing 400065, China |
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| Abstract: | Due to the high bit error rate(BER)for traditional correlation delay shift keying(CDSK)system,a noise reduction improved multi-carrier CDSK(NR-I-MC-CDSK)system is proposed.At the transmitter,the chaotic signal generator is improved by using the editor so that each information signal can bear 2 bits of information.Then the system is combined with the multi-carrier technology to make each frame transmit 2N bits of information.At the receiver,the noise reduction method of filter is used to reduce the variance of the interference term in the decision variable and the corresponding information bit is demodulated through zero crossing.Using two different kinds of channel model,the system signal transmission process under the condition of ideal channel condition and the actual channel is studied.The BER formulae of the system under different channel conditions is derived.Finally,the simulation and performance analysis of the system are carried out.The results show that the proposed chaotic communication system has good performance in BER and data transmission rate. |
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| Keywords: | chaotic communication correlation delay shift keying(CDSK) noise reduction multi-carrier |
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