北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2004, Vol. 27 ›› Issue (4): 13-17.

• • 上一篇    下一篇

基于正交小波的超宽带无线通信多址接入方式——波分多址

朱雪田, 邓天乐, 周 正   

  1. 北京邮电大学 电信工程学院, 北京 100876
  • 收稿日期:2003-05-26 出版日期:2004-04-28
  • 作者简介:朱雪田( 1975— ) , 男, 博士生. E-mail: zh uxueti an@ 126. com;周 正( 1945— ) , 男, 教授, 博士生导师. E-mai l: z zh ou@ bup t. ed u. cn
  • 基金资助:
    教育部科学技术研究重点项目( 03035) ; 国家“ 863计划”项目( 2003AA123240) ; 国家自然科学基金项目( 60372097)

Waveform Division Multiple Access Based on the
Orthogonal Wavelet for Ultra-Wideband Impulse
Radio Multiple-Access Communication

ZHU Xue-tian, DEN G Tian-le, ZHOU Zheng   

  1. A new ul tra-wideba nd UWB multiple-access scheme, wav eform divi sion multiple access WDM A based o n the orthog onalwavelet function sha pes, is presented. In this new scheme, the scaling functionO t and the wavelet functio n j t a re desig ned as UWB pulses, which are uni fo rmly di st ributed to the users to reali ze mul tiple access. Theoretical analysis and simulatio n results show that o ur WDMA UWB sy stem has la rg er capaci ty than the tradi tional TH-PPM timehopping-pulse po sition modulatio n and DS-BPM di rect sequence-bi-po larity modulatio n .
  • Received:2003-05-26 Online:2004-04-28

摘要: 与传统的通信技术相比较,超宽带(UWB)通信系统在信号波形选择方面具有更大的灵活性.基于正交小波理论,一种新的UWB多址接入方式——波分多址(WDMA)被提出. 在这种多址接入方式中,具有正交性的尺度函数(t)与小波函数ψ(t)波形被设计作为UWB脉冲波形, 借助m序列理论,将2种函数波形均匀地分配给多个用户以实现多址接入. 性能分析及仿真比较表明,与传统的TH-PPM和DS-BPM UWB多址系统相比较,WDMA UWB系统用户容量显著提高.

关键词: 超宽带, 波分多址, 正交小波, 多址接入

Abstract: A new ultra-wideband (UWB) multiple-access scheme, waveform division multiple access (WDMA) based on the orthogonal wavelet function shapes, is presented. In this new scheme, the scaling function (t) and the wavelet function ψ(t) are designed as UWB pulses, which are uniformly distributed to the users to realize multiple access. Theoretical analysis and simulation results show that our WDMA UWB system has larger capacity than the traditional TH-PPM(timehopping-pulse position modulation ) and DS-BPM(direct sequence-bi-polarity modulation).

Key words: ultra-wideband, waveform division multiple acesss, orthogonal wavelet, multiple access

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