吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (1): 335-340.doi: 10.13229/j.cnki.jdxbgxb201501049

• Orignal Article • Previous Articles    

Digital channelized receiver with narrow transition band based on FRM filter

CHEN Tao,WANG Ying,LIU Yong,WU Di,LIU Lu-tao   

  1. College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
  • Received:2013-05-29 Online:2015-02-01 Published:2015-02-01

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Abstract: To overcome the complexity in prototype filter design induced by the increase in the number of channels and the requirement of narrow transition band, a new design method of channel filter banks with narrow transition zone is proposed. Using Frequency Response Masking (FRM) techniques, the prototype half-band filter is interpolated to obtain a narrow transition band. First, the prototype masking filter is shifted in spectrum to generate masking filters for upper and lower branches. Then, the narrow transition band filter is obtained by synthesizing the upper and lower branches. Finally, the filter banks with narrow transition band are attained by filter modulation, poly-phase filtering and combination of adjacent bands. A 8-channel design examples with Matlab demonstrate effectiveness of the proposed method.

Key words: information processing, frequency response masking, channelization, filter banks, narrow transition band, receiver

CLC Number: 

  • TN971.1
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