Acta Metallurgica Sinica(English letters) ›› 2013, Vol. 20 ›› Issue (5): 91-96.doi: 10.1016/S1005-8885(13)60095-3

• Computer Science • 上一篇    下一篇

Joint use of time-domain and windowed method for design of modulated DFT filter banks

庄陵1,计翔1,邵凯1,王光宇2   

  1. Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • 收稿日期:2013-03-05 修回日期:2013-09-02 出版日期:2013-10-30 发布日期:2013-10-29
  • 通讯作者: 计翔 E-mail:longyue1022@163.com
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (61071195), the Sino-Finland Cooperation Project (1018), the Chongqing Educate Commission Project (KJ100501).

Joint use of time-domain and windowed method for design of modulated DFT filter banks

  1. Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2013-03-05 Revised:2013-09-02 Online:2013-10-30 Published:2013-10-29
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (61071195), the Sino-Finland Cooperation Project (1018), the Chongqing Educate Commission Project (KJ100501).

摘要: A novel and efficient technique to design modulated discrete Fourier transform (DFT) filter banks is introduced in this paper. The proposed method first relaxes the limits that the synthesis filters are the time-reversed version of the analysis filters and then adopts the time domain formula of the perfect reconstruction property as the solution to design the synthesis filters. The prototype filter in analysis filter banks is designed based on Fourier-Kaiser window approach. Simulation results show that the designed filter banks approximately satisfy the perfect reconstruction with controllable reconstruction errors.

关键词: time-domain formula, DFT filter banks, prototype filter design, filter banks design

Abstract: A novel and efficient technique to design modulated discrete Fourier transform (DFT) filter banks is introduced in this paper. The proposed method first relaxes the limits that the synthesis filters are the time-reversed version of the analysis filters and then adopts the time domain formula of the perfect reconstruction property as the solution to design the synthesis filters. The prototype filter in analysis filter banks is designed based on Fourier-Kaiser window approach. Simulation results show that the designed filter banks approximately satisfy the perfect reconstruction with controllable reconstruction errors.

Key words: time-domain formula, DFT filter banks, prototype filter design, filter banks design

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