Naslov
An algorithm for the design of multiplierless two-channel perfect reconstruction orthogonal lattice filter banks

Autori
Yli-Kaakinen, Juha ; Saramäki, Tapio ; Bregović, Robert

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the First International Symposium on Control, Communications and Signal Processing / - Tampere : Tampere University of Technology, 2004, 415-418

Skup
First International Symposium on Control, Communications and Signal Processing

Mjesto i datum
Hammamet, Tunis, 21.05.2004. - 24.05.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Two-channel filter banks; Perfect-reconstruction; Lattice structure

Sažetak
This paper describes an algorithm for designing multiplierless two-channel perfect-reconstruction (PR) orthogonal lattice filter banks. The advantage of the lattice implementation is that the PR property is structurally ensured even after quantizing the coeficients into very simple representation forms. The coeficient optimization is performed in three basic stages. First, a simple design scheme is used for generating an initial solution for further optimization. Second, this initial solution is used as a start-up solution for the non-linear optimization algorithm being employed for determining a parameter space of the ininite-precision coeficients including the feasible space where the filter bank meets the given criteria. The third step involves finding the coeficients in this space so that the resulting filter bank meets the given criteria with simple coeficient representation forms. An example taken from the literature illustrates that the proposed algorithm results at least in a good suboptimal finite-precision solution in a fairly short time.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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