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WOLA滤波器组在宽带数字中频处理中的应用 被引量:3

Application of WOLA Filterbanks in Wideband Digital IF Processing
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摘要 信道化技术是一种宽带数字中频系统中常用于信号处理与分析的技术。多相DFT滤波器组是实现信道化的一种高效结构,但其参数设计的灵活性受到了信道数目与抽取倍数必须相等的限制。利用WOLA滤波器组实现宽带数字中频的信道化设计,可实现与多相DFT滤波器组相同的功能,同时解除了信道数目与抽取倍数的约束关系。仿真结果验证了WOLA滤波器组实现宽带信号信道化的有效性。 The channelized technology is applied to the process and analysis of wideband signals in the digital intermediate frequency (IF) processing module. Polyphase discrete Fourier transform (PDFT) filterbank is an efficient structure for channelized design, but its flexibility is limited by the fixed relationship between decimating factor and channel number. Weighted overlap-add (WOLA) filterbanks is adopted to realized the channelized design in digital IF module. The WOLA structure gets rid of the fixed relationship in PDFT structure and realizes the same functions. The simulation results show the effectiveness of the WOLA structure.
出处 《计量学报》 CSCD 北大核心 2013年第5期486-490,共5页 Acta Metrologica Sinica
基金 国家自然科学基金(60827001)
关键词 计量学 信道化设计 数字中频处理 多相DFT滤波器组 WOLA滤波器组 Metrology Channelized design Digital IF processing Poly DFT fiherbanks WOLA fiherbanks
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参考文献7

  • 1Harris F, Dick C, Rice M. Digital receivers and transmitters using Polyphase filter banks for wireless communication [ J ]. IEEE Transactions on MicrowaveTheory and Techniques, 2003, 51 (4) : 1395 - 1412.
  • 2Crochiere R E, Rabiner L R. Multirate digital signal processing [ M ]. Englewod Cliffs: Prentice-Hall Inc, 1983.
  • 3Brennan R, Schneider T. An ultra low-power DSP system with a flexible filterbank [ C ]//The Thirty-Fifth Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, USA, 2001.
  • 4Brennan R, Schneider T. A flexible filterbank structure for extensive signal manipulations in digital hearing aids [ C ] //Proc of International Symposium on Circuits and Systems, Monterey, CA USA, 1998.
  • 5Heller P N. A general formulation of modulated filter banks [ J ]. IEEE Transactions on Signal Processing, 2004, 47(4) : 986 - 1002.
  • 6崔杰,肖灵,王玥,孟晓辉,刘亭亭.一种用于数字助听器的WOLA滤波器组的设计准则[J].应用声学,2010,29(1):36-42. 被引量:7
  • 7熊艳平,刘三阳.近似完全重构DFT调制滤波器组的设计[J].计算机工程与应用,2008,44(2):116-119. 被引量:2

二级参考文献21

  • 1King Chung. Challenges and Recent Developments in Hearing Aids: Part I. Speech Understanding in Noise, Microphone Technologies and Noise Reduction Algorithms. Trends In Amplification, 2004, 8(3): 83-124.
  • 2R. E. Crochiere, L. R. Rabiner. Multirate Digital Signal Processing. NJ: Englewood Cliffs, Prentice-Hall, 1983: 289-341.
  • 3P. P. Vaidyanathan. Multrirate Systems and Filterbanks. NJ: Englewood Cliffs, Prentice-Hall, 1993: 286-392.
  • 4S.M. Ahadi, H. Sheikhzadeh, R.L. Brennan, et al. An Efficient Front-End for Automatic Speech Recognition. IEEE International Conference on Electronics, Circuits and Systems, 2003, 1: 128-131.
  • 5O. Romain,B. Denby. Prototype of a Software Defined Broadcast Media Indexing Engine. IEEE International Conference on Acoustics, Speech, and Signal Processing 2007, 2: 11813-11816.
  • 6Z. Cvetkovie, M. Vetterli. Oversampled Filter Banks. IEEE Transactions on signal processing, 1998, 46(5): 1245-1255.
  • 7M. R. Wilbur, T. N. Davidson, J. P. Reilly. Efficient Design of Oversampled NPR GDFT Filterbanks. IEEE Transactions on signal processing, 2004, 52(7): 1947-1963.
  • 8C. D. Creusere, S. K. Mitra. A Simple Method for Designing High-Quality Prototype Filters of M-band Pseudo QMF banks. IEEE Transactions on signal Processing, 1995, 43(4): 1005-1007.
  • 9Y. E Lin, E P. Vaidyanathan. A Kaiser Window Approach for the Design of Prototype Filters of Cosine Modulated Filterbanks. IEEE Signal Processing Letters, 1998, 5(6): 132-134.
  • 10D. Hermann, E. Chau, R. D. Dony, et al. Window Based Prototype Filter Design for Highly Oversampled Filter Banks in Audio Applications. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2007, 2: 11405-11408.

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