北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2002, Vol. 25 ›› Issue (3): 60-63.

• 学术论文 • 上一篇    下一篇

基于小波及其希尔伯特变换的MC-CDMA

李伟华, 赵亚红, 吴伟陵   

  1. 北京邮电大学信息工程学院, 北京 100876
  • 收稿日期:2001-09-03 出版日期:2002-09-10
  • 作者简介: 李伟华(1974—),男,博士生。
  • 基金资助:
     

Wavelet and Its Hilbert Transform Based Multi-Carrier CDMA

LI Wei-hua, ZHAO Ya-hong, WU Wei-ling   

  1. Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2001-09-03 Online:2002-09-10
  • Supported by:
     

摘要: 根据小波的希尔伯特变换与其自身时移正交、与相应的小波及小波的时移正交的特点,提出了3种基于小波及其希尔伯特变换的多载波CDMA,比较了传统多载波CDMA与提出的多载波CDMA性能差异。在AWGN信道下,基于小波及其希尔伯特变换的多载波CDMA与传统MC/BPSK-CDMA和MC/QPSK-CDMA具有相同的BER,且在不增加带宽的情况下,加倍了比特速率。

关键词: 多载波码分多址, 小波, 带宽效率

Abstract: Three novel MC-CDMA systems, using wavelet and its Hilbert transform for multi-carrier CDMA,were presented. Such systems are basedon that Hilbert transform of a wavelet is orthogonal to its time shifts and itis also orthogonal to the corresponding wavelet and its translation. We investigated the advantages and performance of the system by the comparison with the conventional MC-CDMA system. In the AWGN channel, the systems possess the same BERas the MC/BPSK-CDMA and MC/QPSK-CDMA system, double the bit rate without increasing the bandwidth than the conventional MC-CDMA system.

Key words: multiple carrier code division multiple access, wavelet, band efficiency

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