电信科学 ›› 2009, Vol. 25 ›› Issue (3): 59-63.doi: 10.3969/j.issn.1000-0801.2009.03.018

• 研究与开发 • 上一篇    下一篇

基于多啁啾波形的超宽带多址系统的研究

周金,赵启大   

  1. 南开大学 天津 300070
  • 出版日期:2009-03-15 发布日期:2009-03-15
  • 基金资助:
    国家自然科学基金资助项目;天津市科技发展计划科技攻关项目;天津市科技支撑计划重点项目

Study of Ultra-wideband for Multi-access System Based on Multi-chirp Waveform

Jin Zhou,Qida Zhao   

  1. Nankai University,Tianjin 300070,China
  • Online:2009-03-15 Published:2009-03-15

摘要:

基于啁啾(chirp)脉冲的超宽带系统具有成本低、耗能少和较高的系统增益等优点。本文在啁啾理论的基础上,提出一种针对多用户超宽带系统的新型啁啾波形。通过详尽分析该编码的相关性能,验证了该多址方案的合理性。利用多啁啾波形编码构建的多用户超宽带通信系统,兼具了脉冲超宽带和多带超宽带的优点。本文对基于多啁啾脉冲波形的多用户超宽带通信系统进行了详尽的理论分析,并进行了性能仿真,仿真结果表明:相对于传统脉冲超宽带系统,这种多啁啾波形的多用户系统具有更好的抵抗多址干扰的能力。

关键词: 超宽带, 多用户干扰, 啁啾信号, 声表面波器件

Abstract:

UWB based on chirp waveform has the advantages of low cost,low power consumption and high processing gain. A UWB system based on multi-chirp waveform is employed to construct a multi-user UWB system,which enables the system gain merits of both IR-UWB as well as OFDM-UWB. System performance for multi-user UWB using multi-chirp waveform is theoretically analyzed with details. Simulation results are given to show that such a system outdoes traditional UWB in the aspect of mitigating multi-user interference.

Key words: ultra-wideband, multi-user interference, chirp signal, surface-acoustic device

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