Coefficient decimation approach for realizing reconfigurable finite impulse response filters
- 1 May 2008
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 02714302,p. 81-84
- https://doi.org/10.1109/iscas.2008.4541359
Abstract
A new approach to implement computationally efficient reconfigurable finite impulse response (FIR) filter is presented in this paper. If the coefficients of an FIR filter are decimated by M, i.e., if every M th coefficient of the filter is kept unchanged and remaining coefficients are changed to zeros, a multi-band frequency response will be obtained. The resulting frequency responses will have centre frequencies at 2pik/M, where k is an integer ranging from 0 to M-1. If these multi-band frequency responses are selectively masked using inherently low complex wide transition-band masking filters, different low-pass, high-pass, bandpass, and bandstop filters can be obtained. If every M th coefficient is grouped together removing the zero coefficients in between, a decimated frequency response in comparison to the original frequency response is obtained. In this paper, we also show the design of a reconfigurable filter bank using the above approach.Keywords
This publication has 5 references indexed in Scilit:
- Frequency Response Masking based Reconfigurable Channel Filters for Software Radio ReceiversPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Software Radio ReceiversPublished by Springer Science and Business Media LLC ,1999
- Frequency-response masking approach for digital filter design: complexity reduction via masking filter factorizationIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 1994
- A new structure of sharp transition FIR filters using frequency-response maskingIEEE Transactions on Circuits and Systems, 1988
- Frequency-response masking approach for the synthesis of sharp linear phase digital filtersIEEE Transactions on Circuits and Systems, 1986