Wave digital filter structures for high-speed narrow-band and wide-band filtering

1999 ◽  
Vol 46 (6) ◽  
pp. 726-741 ◽  
Author(s):  
H. Johansson ◽  
L. Wanhammar
Keyword(s):  
Digital Filter ◽  
High Speed ◽  
Narrow Band ◽  
Wide Band ◽  
Wave Digital Filter ◽  
Filter Structures

Efficient Multirate Filtering

2002 ◽  
pp. 105-142 ◽  
Author(s):  
Ljiljana D. Milic ◽  
Miroslav D. Lutovac
Keyword(s):  
Digital Filter ◽  
Filter Design ◽  
Narrow Band ◽  
Sampling Rate ◽  
Wide Band ◽  
Digital Filter Design ◽  
Iir Filter ◽  
Design And Implementation ◽  
Sampling Rate Conversion ◽  
Rate Conversion

Application of multirate techniques to improve digital filter design and implementation are considered in this chapter. FIR and IIR filter design and implementation for sampling rate conversion by integer and rational factors are presented. Sharp narrow-band and wide-band multirate design techniques are discussed. Accurate designs of FIR and IIR half-band filters are described in detail. Several examples are provided to illustrate the multirate approach to filter design.

SINGLE FILTER FREQUENCY-RESPONSE MASKING FIR FILTERS

2003 ◽  
Vol 12 (05) ◽  
pp. 601-630 ◽  
Author(s):  
OSCAR GUSTAFSSON ◽  
HÅKAN JOHANSSON ◽  
LARS WANHAMMAR
Keyword(s):  
Frequency Response ◽  
Filter Design ◽  
Narrow Band ◽  
Wide Band ◽  
Fir Filters ◽  
Band Frequency ◽  
Filter Structure ◽  
Frequency Response Masking ◽  
Filter Structures ◽  
Filter Frequency

In this work filter structures that decrease the required number of multipliers and adders for implementation of linear-phase FIR filters using frequency-response masking techniques are introduced. The basic idea of the proposed structures is that identical subfilters are used. This leads to the same arithmetic structure can be multiplexed in the implementation, reducing the number of required multipliers and adders. The subfilters are mapped using the folding transformation to obtain an area-efficient time-multiplexed (or pipeline/interleaved) implementation. Both narrow-band and wide-band frequency-response masking as well as arbitrary bandwidth frequency-response masking techniques are considered. The filter design is discussed and for each filter structure the limits on the specifications are derived. Designed examples show the usefulness of the proposed structures.

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