| 自编码扩频和直接序列扩频的性能比较 |
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| 引用本文： | 李仲令,郭燕,周亮.自编码扩频和直接序列扩频的性能比较[J].电子科技大学学报(社会科学版),2003(5). |
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| 作者姓名： | 李仲令 郭燕 周亮 |
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| 作者单位： | 电子科技大学通信抗干扰技术国家级重点实验室，电子科技大学通信抗干扰技术国家级重点实验室，电子科技大学通信抗干扰技术国家级重点实验室 成都 610054，成都 610054，成都 610054 |
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| 基金项目： | 国家自然科学基金,编号:60272008，国防科技重点实验室基金 |
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| 摘 要： | 基于自编码扩频在传输数字信息时能实现扩频码动态可变的现象,讨论了自编码扩频的原理、传输特性,引入等效扩频增益描述其性能变化,并针对自干扰现象提出了改进方法。通过分析和仿真表明,虽然自编码扩频的增益与经典扩频实际上相同,但是通信的隐蔽性得到了改进。
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| 关 键 词： | 扩频通信 伪随机序列 自编码扩频 直接序列扩频 |
Private Communication and Self-Encoded Spread Spectrum |
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| Li Zhongling Guo Yan Zhou Liang.Private Communication and Self-Encoded Spread Spectrum[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2003(5). |
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| Authors: | Li Zhongling Guo Yan Zhou Liang |
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| Abstract: | Self-encoded spread spectrum(SESS) system employs random spreading sequences extracted from the information date to assure dynamically random varying. Performance analysis of self-encoded spread spectrum in additive white Gaussian noise channels is presented. An equivalent spread spectrum gain is used to describe the characteristic of self-encoded direct sequence spread spectrum system. Improved approaches generating self-encoded spread spectrum sequences are introduced. Theoretical analysis and computer simulation show that the spread spectrum gain of self-encoded direct sequence spread spectum system is almost the same to conventional spread spectrum system, but private of self-encoded direct sequence spread spectum system increases with variability of spread spectrum codes. |
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| Keywords: | spread spectrum communication pseudo-noise sequence self-encoded spread spectrum direct sequence spread spectrum |
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