TY - GEN
T1 - A modified coefficient decimation method to realize low complexity FIR filters with enhanced frequency response flexibility and passband resolution
AU - Ambede, Abhishek
AU - Smitha, K. G.
AU - Vinod, A. P.
PY - 2012
Y1 - 2012
N2 - Low complexity, reconfigurable finite impulse response (FIR) filters using coefficient decimation method (CDM) has been recently proposed in literature. In this paper, we propose a modified coefficient decimation method (MCDM) which enhances the flexibility of CDM in obtaining FIR filters with varied passband locations. The resolution of the center frequency locations in the multi-band frequency responses obtained using MCDM is twice that of the conventional CDM. Further, the stopband attenuation of FIR filters realized using our MCDM is higher compared to the filters obtained using conventional CDM. Also, for the same prototype modal (original) filter, the number of distinct frequency band locations that can be obtained after coefficient decimation is greater for MCDM than CDM due to the increased center frequency resolution of the former method. The hardware realization architecture of MCDM is presented. The advantages of our method for realizing reconfigurable filter banks are also discussed.
AB - Low complexity, reconfigurable finite impulse response (FIR) filters using coefficient decimation method (CDM) has been recently proposed in literature. In this paper, we propose a modified coefficient decimation method (MCDM) which enhances the flexibility of CDM in obtaining FIR filters with varied passband locations. The resolution of the center frequency locations in the multi-band frequency responses obtained using MCDM is twice that of the conventional CDM. Further, the stopband attenuation of FIR filters realized using our MCDM is higher compared to the filters obtained using conventional CDM. Also, for the same prototype modal (original) filter, the number of distinct frequency band locations that can be obtained after coefficient decimation is greater for MCDM than CDM due to the increased center frequency resolution of the former method. The hardware realization architecture of MCDM is presented. The advantages of our method for realizing reconfigurable filter banks are also discussed.
KW - coefficient decimation
KW - Finite impulse response (FIR) filters
KW - low complexity
KW - reconfigurability
UR - https://www.scopus.com/pages/publications/84866923138
U2 - 10.1109/TSP.2012.6256379
DO - 10.1109/TSP.2012.6256379
M3 - Conference Paper published in a book
AN - SCOPUS:84866923138
SN - 9781467311182
T3 - 2012 35th International Conference on Telecommunications and Signal Processing, TSP 2012 - Proceedings
SP - 658
EP - 661
BT - 2012 35th International Conference on Telecommunications and Signal Processing, TSP 2012 - Proceedings
T2 - 2012 35th International Conference on Telecommunications and Signal Processing, TSP 2012
Y2 - 3 July 2012 through 4 July 2012
ER -