| 一种基于方向调制的双波束扩频安全通信系统 |
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| 引用本文： | 洪涛,宋茂忠,刘渝.一种基于方向调制的双波束扩频安全通信系统[J].电子与信息学报,2011,33(10):2317-2321. |
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| 作者姓名： | 洪涛 宋茂忠 刘渝 |
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| 作者单位： | 南京航空航天大学信息科学与技术学院 南京210016 |
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| 基金项目： | 江苏省自然科学基金资助项目(BK2009367); 航空基金资助项目(20095152026)资助课题 |
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| 摘 要： | 为了提高通信信息在无线传输过程中的窃听难度，该文提出了一种基于方向调制的双波束扩频信号。发射信号不仅与使用的扩频序列有关，而且与接收机相对于发射机的空间方位信息有关，是一种扩频序列和空间方位信息共同调制的空间扩频信号。仿真结果表明相比于传统的扩频信号，双波束方向调制扩频信号为通信信息在信息传输层面上提供了一种更加安全的无线传输方法。
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| 关 键 词： | 扩频通信 双波束 方向调制 安全通信 |
| 收稿时间： | 2010-11-15 |
A Dual-beam Spread Spectrum Signal Based on Directional Modulation for Secure Communication |
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| Hong Tao,Song Mao-zhong,Liu Yu.A Dual-beam Spread Spectrum Signal Based on Directional Modulation for Secure Communication[J].Journal of Electronics & Information Technology,2011,33(10):2317-2321. |
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| Authors: | Hong Tao Song Mao-zhong Liu Yu |
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| Affiliation: | Hong Tao Song Mao-zhong Liu Yu(College of Information Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | A dual-beam spread spectrum signal based on directional modulation is proposed to increase the difficulty of the wireless communication tapping.The transmitted signal is not only associated with the spread spectrum sequence but also with the azimuth angle of the receiver.Therefore,this signal is a space spread spectrum signal modulated by the azimuth angle.Simulation results show that the proposed signal offers a safety method for the data transmission compared with the traditional spread spectrum signal. |
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| Keywords: | Spread spectrum communication Dual-beam Directional modulation Secure communication |
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