| 基于STBC技术的DCSK通信系统性能分析 |
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| 引用本文： | 赵雅琴,李书营,米雪龙,李元元,吴芝路.基于STBC技术的DCSK通信系统性能分析[J].系统工程与电子技术,2016,38(1):155-162. |
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| 作者姓名： | 赵雅琴 李书营 米雪龙 李元元 吴芝路 |
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| 作者单位： | 1. 哈尔滨工业大学电子与信息工程学院, 黑龙江 哈尔滨 150001;
2. 中国运载火箭技术研究院研究发展中心, 北京 100076 |
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| 摘 要： | 差分混沌相移键控(differential chaos shift keying,DCSK)技术具有较好的抗噪声性能以及较低的检测复杂度,但是其传输速率比较低。为了提高其传输速率,提出了一种基于空时块码(space time block code,STBC)技术的DCSK通信系统。该系统充分利用了不同混沌信号之间具有较好的互相关性的特点,采用解码复杂度低的非相干解调技术,具有良好的抗噪声性能、不需要信道状态信息的优点。推导了在多径瑞利信道中STBC-DCSK系统的误码率性能。大量的仿真实验结果表明,提出的STBC-DCSK系统在损失了微小的系统误码率性能的情况下,进一步提高了传输速率。
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Performance analyze for STBC-based DCSK communication system |
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| ZHAO Ya-qin,LI Shu-ying,MI Xue-long,LI Yuan-yuan,WU Zhi-lu.Performance analyze for STBC-based DCSK communication system[J].System Engineering and Electronics,2016,38(1):155-162. |
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| Authors: | ZHAO Ya-qin LI Shu-ying MI Xue-long LI Yuan-yuan WU Zhi-lu |
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| Institution: | 1. School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China;;
2. R&D Centre, China Academy of Launch Vehicle Technology, Beijing 100076, China |
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| Abstract: | Differential chaos shift keying (DCSK) has lots of advantages, such as anti-noise and low detection complexity, but it has a low transmission rate. In order to increase the transmission rate, a novel DCSK communication system based on the space time block code (STBC) technology is proposed. The proposed STBC DCSK system, which makes good use of the cross-correlation property of chaos sequences, has the advantages of the DCSK system and does not require any channel state information. Moreover, the STBC-DCSK system increases the transmission rate and has lower detection complexity. The theoretical bit error rate (BER) performance is derived under multi-path Rayleigh fading channels. Numerous simulation results show that the proposed scheme enhances the transmission rate with a small BER performance sacrifice. |
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