Design of FIR Filters With Sparse Signed Digit Coefficients

Autor:	Seehyun Kim
Rok vydání:	2015
Předmět:	Filter design Adder Compressed sensing Finite impulse response Filter (video) Computer science Electronic engineering Codec Sparse approximation Digital filter Algorithm
Zdroj:	Journal of IKEEE. 19:342-348
ISSN:	1226-7244
DOI:	10.7471/ikeee.2015.19.3.342
Popis:	High speed implementation of digital filters is required in high data rate applications such as hard-wired wide band modem and high resolution video codec. Since the critical path of the digital filter is the MAC (multiplication and accumulation) circuit, the filter coefficient with sparse non-zero bits enables high speed implementation with adders of low hardware cost. Compressive sensing has been reported to be very successful in sparse representation and sparse signal recovery. In this paper a filter design method for digital FIR filters with CSD (canonic signed digit) coefficients using compressive sensing technique is proposed. The sparse non-zero signed bits are selected in the greedy fashion while pruning the mistakenly selected digits. A few design examples show that the proposed method can be utilized for designing sparse CSD coefficient digital FIR filters approximating the desired frequency response.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1412d6e66e22982d4b68aba2356c90c1 https://doi.org/10.7471/ikeee.2015.19.3.342 Zobrazit plný text záznamu