Two-Rate Based Low-Complexity Variable Fractional-Delay FIR Filter Structures - Publikacja - MOST Wiedzy

Wyszukiwarka

Two-Rate Based Low-Complexity Variable Fractional-Delay FIR Filter Structures

Abstrakt

This paper considers two-rate based structures for variable fractional-delay (VFD) finite-length impulse response (FIR) filters. They are single-rate structures but derived through a two-rate approach. The basic structure considered hitherto utilizes a regular half-band (HB) linear-phase filter and the Farrow structure with linear-phase subfilters. Especially for wide-band specifications, this structure is computationally efficient because most of the overall arithmetic complexity is due to the HB filter which is common to all Farrow-structure subfilters. This paper extends and generalizes existing results. Firstly, frequency-response masking (FRM) HB filters are utilized which offer further complexity reductions. Secondly, both linear-phase and low-delay subfilters are treated and combined which offers trade-offs between the complexity, delay, and magnitude response overshoot which is typical for low-delay filters. Thirdly, the HB filter is replaced by a general filter which enables additional frequency-response constraints in the upper frequency band which normally is treated as a don't-care band. Wide-band design examples (90, 95, and 98% of the Nyquist band) reveal arithmetic complexity savings between some 20 and 85% compared with other structures, including infinite-length impulse response structures. Hence, the VFD filter structures proposed in this paper exhibit the lowest arithmetic complexity among all hitherto published VFD filter structures.

Cytowania

  • 1 4

    CrossRef

  • 1 5

    Web of Science

  • 1 4

    Scopus

Cytuj jako

Pełna treść

pełna treść publikacji nie jest dostępna w portalu

Słowa kluczowe

Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS nr 60, strony 136 - 149,
ISSN: 1549-8328
Język:
angielski
Rok wydania:
2013
Opis bibliograficzny:
Johansson H., Hermanowicz E.: Two-Rate Based Low-Complexity Variable Fractional-Delay FIR Filter Structures// IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS. -Vol. 60, nr. iss.1 (2013), s.136-149
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/tcsi.2012.2215697
Weryfikacja:
Politechnika Gdańska

wyświetlono 52 razy

Publikacje, które mogą cię zainteresować

Meta Tagi