| 一种用于超宽带通信的改进型混沌脉冲位置调制方法 |
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| 引用本文： | 杨华,蒋国平.一种用于超宽带通信的改进型混沌脉冲位置调制方法[J].南京邮电大学学报(自然科学版),2006,26(2):47-50. |
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| 作者姓名： | 杨华 蒋国平 |
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| 作者单位： | 南京邮电大学,自动化学院,江苏,南京,210003 |
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| 基金项目： | 国家高技术研究发展计划(863计划);江苏省高校"青蓝工程"项目;江苏省高校自然科学基金 |
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| 摘 要： | 针对混沌脉冲位置调制(CPPM,Chaotic Pu lse Position Modu lation)存在的缺点提出一种新的可用于超宽带冲激无线电(UWB-IR,U ltra-W ide-Band based Impu lse Rad io)的改进型通信方案。改进后的混沌脉冲位置调制方法能够克服CPPM容易出现的发散和严重的误差传播,具有保密性好、可靠性高、设备的实现更加简单等优点。通过仿真对在有噪声和滤波的情况下改进前后系统的误码性能进行了比较。结果表明,在非理想定时情况下,文中提出的新系统具有比CPPM更好的解码性能。
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| 关 键 词： | 混沌脉冲位置调制 扩频 超宽带 |
| 文章编号： | 1673-5439（2006）02-0047-04 |
| 收稿时间： | 2005-11-10 |
| 修稿时间： | 2005年11月10 |
A Modified Chaotic Pulse Position Modulation Scheme for Ultra-Wide Bandwidth Communication |
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| YANG Hua,JIANG Guo-ping.A Modified Chaotic Pulse Position Modulation Scheme for Ultra-Wide Bandwidth Communication[J].Journal of Nanjing University of Posts and Telecommunications,2006,26(2):47-50. |
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| Authors: | YANG Hua JIANG Guo-ping |
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| Institution: | College of Automation, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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| Abstract: | A modified chaotic pulse position modulation(CPPM) strategy for ultra-wide bandwidth impulse radio communication system is firstly proposed here,aiming at overcoming the two main disadvantages in CPPM.The modified method eliminates the possible occurrence of boast and serious error propagation in CPPM.It posses good security,high reliability and easy realization.The performances of the systems before / after modification are simulated and analyzed in the presence of noise and filtering.The simulation results show that the proposed scheme in this paper performs better in demodulation under the situation of imperfect timing. |
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| Keywords: | Chaotic pulse position modulation Spread spectrum UWB |
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