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Design of complex FIR filters using the frequency-response masking approach

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2 Author(s)
Yongzhi Liu ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore ; Zhiping Lin

Complex coefficient FIR filters have applications in a variety of areas. The paper addresses the design of complex FIR filters using the frequency-response masking (FRM) approach, which is well known to be very efficient in the design and implementation of FIR filters with sharp transition bands. We first present a simple method for designing linear phase complex FIR filters using FRM and frequency shifting. We then propose a modified FRM structure for designing complex filters with approximately linear phases and reduced group delays. An illustrative example is included.

Published in:

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Date of Conference:

23-26 May 2005