| 基于瑞利衰落信道的MISO-CDSK通信方案及其性能分析 |
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| 引用本文： | 段俊毅,蒋国平,杨华.基于瑞利衰落信道的MISO-CDSK通信方案及其性能分析[J].南京邮电大学学报(自然科学版),2014(3):16-22. |
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| 作者姓名： | 段俊毅 蒋国平 杨华 |
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| 作者单位： | [1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]南京邮电大学自动化学院,江苏南京210023 [3]南京铁道职业技术学院,江苏南京210031 |
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| 基金项目： | 国家自然科学基金（6084091）、江苏省“六大人才高峰”高层次人才项目（SJ209006）和高等学校博士点专项科研基金（20103223110003）资助项目 |
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| 摘 要： | 为了提高混沌通信的可靠性,提出多输入单输出相关延迟键控（MISO-CDSK）,并且推导出该方案基于瑞利衰落信道的误码率公式.通过在发射端设置多根独立的天线,该方案能够克服信道衰落问题.理论分析和仿真表明：与CDSK相比,MISO-CDSK误码性能更好;对于给定的平均信道增益,该方案误码率随着Eb/N0值的增加而降低;对于给定的Eb/N0值,该方案误码率随着平均信道增益的增加而降低;对于不同的Eb/N0值,选择合理的扩频因子能够实现该方案误码性能最优化.
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| 关 键 词： | 多输入单输出 CDSK 瑞利衰落信道 扩频因子 |
MISO-CDSK Communication Scheme over Rayleigh Fading Channels and Its Performance Analysis |
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| DUAN Jun-yi,JIANG Guo-ping,YANG Hua.MISO-CDSK Communication Scheme over Rayleigh Fading Channels and Its Performance Analysis[J].Journal of Nanjing University of Posts and Telecommunications,2014(3):16-22. |
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| Authors: | DUAN Jun-yi JIANG Guo-ping YANG Hua |
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| Institution: | 1.College of Telecommunications ＆ Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China ;Nanjing Institute of Railway Technology, Nanjing 210031, China; 2.College of Automation, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;) |
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| Abstract: | To improve the reliability of chaotic communications,a multiple-input-single-output correlationdelay-shift-keying（CDSK） （MISO-CDSK） is proposed.The expression for bit error rate （BER） over rayleigh fading channels is derived by this scheme.By setting multiple independent antennas at the transmitter,the scheme can combat the problem of channel fading.Theoretical analysis and simulation results show that thescheme has better BER performance than that of CDSK.Given the average channel gain,the BER of the scheme decreases inversely with the value of Eb/N0.Given the value of Eb/N0,BER of the scheme decreases inversely with the average channel gain.For the varying of Eb/N0,the optimal BER of the scheme is obtained by selecting a reasonable spreading factor. |
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| Keywords: | multiple input single output correlation-delay-shift-keying（CDSK） rayleigh fading channel spreading factor |
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