北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (4): 98-102.doi: 10.13190/jbupt.200704.98.091

• 论文 • 上一篇    下一篇

基于M带小波提升理论的多载波调制系统

高建波1,2,田彩萍3,赵尔沅1,乐光新1   

  1. (1. 北京邮电大学 电信工程学院, 北京 100876; 2. 河北理工大学 信息学院, 唐山 063009; 3. 北京邮电大学 经济管理学院, 北京 100876)
  • 收稿日期:2006-08-28 修回日期:2007-03-07 出版日期:2007-08-30 发布日期:2007-08-30
  • 通讯作者: 高建波

M Band Wavelet Lifting Theory Based Multicarrier System

GAO Jian-bo1,2,TIAN Cai-ping3,ZHAO Er-yuan1,YUE Guang-xin1   

  1. (1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2. Information College, Hebei Polytechnic University, Tangshan 063009, China; 3. School of Economics and Management, Beijing University of Posts and Telecommunications, Beijing 100876, China)
  • Received:2006-08-28 Revised:2007-03-07 Online:2007-08-30 Published:2007-08-30
  • Contact: GAO Jian-bo

摘要:

对M带小波的基本理论及其提升格式进行了较深入研究,基于提升理论提出了一种新的多载波调制系统——M带小波提升多载波调制(LWMT)系统. 通过在多径信道、加性高斯白噪声(AWGN)信道及存在脉冲干扰情况下对其误比特率(BER)进行详细的分析及系统仿真,得到了基于提升的M带小波多载波调制系统在多径信道下及存在脉冲干扰时其系统性能优于传统的正交频分复用(OFDM)系统,而在AWGN下其性能与传统OFDM系统相当的结果.

关键词: M带小波, 小波提升, 正交频分复用, 信号处理, 提升多载波调制系统

Abstract:

A new multicarrier modulation system M band lifting wavelet multicarrier modulation (LWMT) system was proposed based on M band wavelet theory and its lifting scheme. Through analyzing bit error rate(BER) and simulated the system under additive white Gaussian noise(AWGN) channel and fading channel, the result shows that: in fading channel the performance of LWMT system is better than orthogonal frequency division multiplexing (OFDM) system. In AWGN channel the performance of LWMT system is same as OFDM system but LWMT system performance is superior to OFDM system in the antinarrow interference.

Key words: M band wavelet, wavelet lifting, orthogonal frequency division multiplexing, digital signal processing, lifting wavelet multicarrier modulation system

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