NDLI: An improved structure and design procedure for signed power-of-two lattice QMF bank

Content Provider	IEEE Xplore Digital Library
Author	Sang Yoon Park Ya Jun Yu
Copyright Year	2009
Description	Author affiliation: Communication Systems Department, Institute for Infocomm Research (I2R), Singapore 138632 (Sang Yoon Park) \|\| School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 (Ya Jun Yu)
Abstract	In this paper, an improved structure and design procedure for signed power-of-two (SPT) lattice quadrature mirror filter (QMF) bank is presented. Previous work by the authors has shown that the angle quantization method of lattice coefficient results in a lower approximation error than the direct quantization. This paper extends the work by exploiting the rotations which yield more possible sum of SPT representations. This enable us to reduce the approximation error further. Also, an algorithm for the efficient gathering of candidate discrete coefficients based on the trellis based searching (TBS) approach is developed in order to alleviate the overheads of optimization program. Design examples are given to show that the proposed structure and algorithm provide larger stopband attenuation of filter than the existing methods.
Starting Page	356
Ending Page	359
File Size	349328
Page Count	4
File Format	PDF
ISBN	9789810824686
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-14
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	NANYANG TECHNOLOGICAL UNIV
Subject Keyword	Algorithm design and analysis Design engineering Lattices Signal processing algorithms Quantization Tin Approximation error Filter bank Hardware Power engineering and energy
Content Type	Text
Resource Type	Article

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