多用户正交差分混沌键控通信系统
TN911.; 针对传统差分混沌移位键控(differential chaos shift keying,DCSK)传输速率较低的问题,提出一种多用户正交DCSK通信系统.该系统通过延迟不同时间区分不同信息时隙,每个信息时隙发送N个用户,有效提升其速率.同时采用正交混沌发生器产生两路正交的混沌信号,彻底消除其信号内干扰,提升系统误码性能.该系统从延迟线数目以及用户数两个方面分析了系统误码率和传输速率.推导在加性高斯白噪声和Rayleigh衰落信道下的误码率公式并进行仿真.仿真结果表明,该系统能够有效改善误码性能和提升速率,具有很好的实用价值....
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| Published in | 系统工程与电子技术 Vol. 41; no. 3; pp. 667 - 673 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
重庆邮电大学信号与信息处理重庆市重点实验室,重庆,400065
01.03.2019
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-506X |
| DOI | 10.3969/j.issn.1001-506X.2019.03.28 |
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| Abstract | TN911.; 针对传统差分混沌移位键控(differential chaos shift keying,DCSK)传输速率较低的问题,提出一种多用户正交DCSK通信系统.该系统通过延迟不同时间区分不同信息时隙,每个信息时隙发送N个用户,有效提升其速率.同时采用正交混沌发生器产生两路正交的混沌信号,彻底消除其信号内干扰,提升系统误码性能.该系统从延迟线数目以及用户数两个方面分析了系统误码率和传输速率.推导在加性高斯白噪声和Rayleigh衰落信道下的误码率公式并进行仿真.仿真结果表明,该系统能够有效改善误码性能和提升速率,具有很好的实用价值. |
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| AbstractList | TN911.; 针对传统差分混沌移位键控(differential chaos shift keying,DCSK)传输速率较低的问题,提出一种多用户正交DCSK通信系统.该系统通过延迟不同时间区分不同信息时隙,每个信息时隙发送N个用户,有效提升其速率.同时采用正交混沌发生器产生两路正交的混沌信号,彻底消除其信号内干扰,提升系统误码性能.该系统从延迟线数目以及用户数两个方面分析了系统误码率和传输速率.推导在加性高斯白噪声和Rayleigh衰落信道下的误码率公式并进行仿真.仿真结果表明,该系统能够有效改善误码性能和提升速率,具有很好的实用价值. |
| Abstract_FL | To solve the problem of the low transmission rate of traditional differential chaos shift keying (DCSK), a multiuser orthogonal DCSK communication system is proposed.The proposed system distinguishes different information time slots by delaying different times, sending Nusers in per information time slot to improve its transmission rate.Meanwhile, the orthogonal chaotic generator is used to generate two orthogonal chaotic signals to completely eliminate the intra-signal interference and improve the performance of the bit error rate (BER).In the proposed system, BER and the transmission rate can be analyzed from two aspects:the number of delay lines and the number of users.The BER formula under additive white Gaussian noise and Rayleigh fading channels is derived and simulated.Simulation results show that the system can effectively improve the performance of BER and increase the transmission rate, furthermore it has good practical value. |
| Author | 张刚 张天骐 陈和祥 |
| AuthorAffiliation | 重庆邮电大学信号与信息处理重庆市重点实验室,重庆,400065 |
| AuthorAffiliation_xml | – name: 重庆邮电大学信号与信息处理重庆市重点实验室,重庆,400065 |
| Author_FL | ZHANG Tianqi ZHANG Gang CHEN Hexiang |
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| Author_xml | – sequence: 1 fullname: 张刚 – sequence: 2 fullname: 陈和祥 – sequence: 3 fullname: 张天骐 |
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| DocumentTitle_FL | Multiuser orthogonal differential chaos shift keying communication system |
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| Keywords | orthogonal 误码率 multiuser differential chaos shift keying (MU-DCSK) 多用户差分混沌移位键控 正交 bit error rate (BER) transmission rate 传输速率 |
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| Title | 多用户正交差分混沌键控通信系统 |
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