Name
Title | ||
|---|---|---|
Adjustable Fractional-Delay Fir Filters Using The Farrow Structure And Multirate Techniques |
Abstract | ||
|---|---|---|
The Farrow structure can be used for efficient realization of adjustable fractional-delay finite-length impulse response (FIR) filters, but, nevertheless, its implementation complexity grows rapidly as the bandwidth approaches the full bandwidth. To reduce the complexity, a multirate approach can be used. In this approach, the input signal is first interpolated by a factor of two via the use of a fixed half-band linear-phase FIR filter. Then, the actual fractional-delay filtering takes place. Finally, the so generated signal is downsampled to retain the original input/output sampling rate. In this way, the bandwidth of the fractional-delay filter used is halved compared to the overall bandwidth. Because the complexity of halfband linear-phase FIR filter interpolators is low, the overall complexity can be reduced. In this paper, we present more implementation details, design trade-offs, and comparisons when the filters are implemented using multiple constant multiplication techniques, which realize a number of constant multiplications with a minimum number of adders and subtracters. |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1109/APCCAS.2006.342270 | 2006 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS |
Keywords | Field | DocType |
linear phase,fir filters,transfer functions,input output,iir filter,fir filter,interpolation | Impulse response,Adder,Half-band filter,Control theory,Computer science,Sampling (signal processing),Filter (signal processing),Electronic engineering,Transfer function,Bandwidth (signal processing),Finite impulse response | Conference |
Citations | PageRank | References |
11 | 1.21 | 9 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Håkan Johansson | 1 | 505 | 65.36 |
| Oscar Gustafsson | 2 | 294 | 43.00 |
| J. Johansson | 3 | 11 | 1.21 |
| Lars Wanhammar | 4 | 188 | 26.99 |