{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,4]],"date-time":"2022-04-04T00:18:42Z","timestamp":1649031522706},"reference-count":10,"publisher":"World Scientific Pub Co Pte Lt","issue":"03","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2008,6]]},"abstract":"<jats:p> In this paper we propose two new parameterizations for unimodular filter banks (UMFBs) by exploiting the canonical forms of the nilpotent matrix present in the factorization of UMFBs. A judicious choice of the canonical structure leads to simple implementation. The use of Discrete Walsh Hadamard Transform (DWHT) saves a major amount of multiplication. The presence of the nilpotent matrix also facilitates the design of filter banks with unequal length analysis and synthesis filters. The structures ensure perfect reconstruction (PR) with minimal delay in the McMillan sense. The free parameters can be obtained through unconstrained optimization, which is hardly possible with the existing design methods. Design examples are presented based on the proposed structures. Although there is a significant reduction in the number of free parameters, the performances of these structures are found to be comparable with and better than the existing design techniques for UMFBs. The design of a class of decomposable higher order UMFBs with unequal lengths of analysis and synthesis filters is done. Also, the design of a one-regular filter bank based on the simplest structure proposed is presented. <\/jats:p>","DOI":"10.1142\/s0218126608004447","type":"journal-article","created":{"date-parts":[[2009,1,22]],"date-time":"2009-01-22T09:55:20Z","timestamp":1232618120000},"page":"353-363","source":"Crossref","is-referenced-by-count":2,"title":["SIMPLE STRUCTURES FOR UNIMODULAR FILTER BANKS WITH REGULARITY"],"prefix":"10.1142","volume":"17","author":[{"given":"ASHA","family":"VIJAYAKUMAR","sequence":"first","affiliation":[{"name":"Electronics Engineering Department, National Institute of Technology Calicut, Calicut, Kerala 673 601, India"}]},{"given":"G.","family":"ABHILASH","sequence":"additional","affiliation":[{"name":"Electronics Engineering Department, National Institute of Technology Calicut, Calicut, Kerala 673 601, India"}]}],"member":"219","published-online":{"date-parts":[[2011,11,21]]},"reference":[{"key":"rf1","volume-title":"Multirate Systems and Filter Banks","author":"Vaidyanathan P. P.","year":"1993"},{"key":"rf2","doi-asserted-by":"publisher","DOI":"10.1109\/29.17536"},{"key":"rf3","doi-asserted-by":"publisher","DOI":"10.1109\/78.489023"},{"key":"rf6","doi-asserted-by":"publisher","DOI":"10.1109\/78.382396"},{"key":"rf8","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2002.804093"},{"key":"rf9","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2005.861741"},{"key":"rf13","volume-title":"Linear Algebra","author":"Lax P. D.","year":"1997"},{"key":"rf14","doi-asserted-by":"publisher","DOI":"10.1109\/78.950784"},{"key":"rf15","first-page":"704","volume":"2","author":"Vijayakumar A.","journal-title":"WSEAS Trans. Signal Process."},{"key":"rf16","volume-title":"Digital Coding of Waveforms","author":"Jayant N. S.","year":"1984"}],"container-title":["Journal of Circuits, Systems and Computers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.worldscientific.com\/doi\/pdf\/10.1142\/S0218126608004447","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,8,7]],"date-time":"2019-08-07T17:56:33Z","timestamp":1565200593000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.worldscientific.com\/doi\/abs\/10.1142\/S0218126608004447"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,6]]},"references-count":10,"journal-issue":{"issue":"03","published-online":{"date-parts":[[2011,11,21]]},"published-print":{"date-parts":[[2008,6]]}},"alternative-id":["10.1142\/S0218126608004447"],"URL":"https:\/\/doi.org\/10.1142\/s0218126608004447","relation":{},"ISSN":["0218-1266","1793-6454"],"issn-type":[{"value":"0218-1266","type":"print"},{"value":"1793-6454","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,6]]}}}