A new low complexity uniform filter bank based on the improved coefficient decimation method
In this paper, we propose a new uniform filter bank (FB) based on the improved coefficient decimation method (ICDM). In the proposed FB’s design, the ICDM is used to obtain different multi-band frequency responses using a single lowpass prototype filter. The desired subbands are individually ob...
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/105683 http://hdl.handle.net/10220/17952 http://www.radioeng.cz/papers/2013-1.htm |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | In this paper, we propose a new uniform filter
bank (FB) based on the improved coefficient decimation
method (ICDM). In the proposed FB’s design, the ICDM is
used to obtain different multi-band frequency responses
using a single lowpass prototype filter. The desired subbands
are individually obtained from these multi-band
frequency responses by using low order frequency response
masking filters and their corresponding ICDM
output frequency responses. We show that the proposed FB
is a very low complexity alternative to the other FBs in
literature, especially the widely used discrete Fourier
transform based FB (DFTFB) and the CDM based FB
(CDFB). The proposed FB can have a higher number of
subbands with twice the center frequency resolution when
compared with the CDFB and DFTFB. Design example
and implementation results show that our FB achieves
86.59% and 58.84% reductions in resource utilizations
and 76.95% and 47.09% reductions in power consumptions
when compared with the DFTFB and CDFB respectively. |
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