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http://dx.doi.org/10.9717/kmms.2012.15.1.081

VLSI Design for Folded Wavelet Transform Processor using Multiple Constant Multiplication  

Kim, Ji-Won (전남대학교 전자컴퓨터공학과)
Son, Chang-Hoon (전남대학교 전자컴퓨터공학과)
Kim, Song-Ju (전남대학교 전자컴퓨터공학과)
Lee, Bae-Ho (전남대학교 전자컴퓨터공학과)
Kim, Young-Min (전남대학교 전자컴퓨터공학과)
Publication Information
Abstract
This paper presents a VLSI design for lifting-based discrete wavelet transform (DWT) 9/7 filter using multiplierless multiple constant multiplication (MCM) architecture. This proposed design is based on the lifting scheme using pattern search for folded architecture. Shift-add operation is adopted to optimize the multiplication process. The conventional serial operations of the lifting data flow can be optimized into parallel ones by employing paralleling and pipelining techniques. This optimized design has simple hardware architecture and requires less computation without performance degradation. Furthermore, hardware utilization reaches 100%, and the number of registers required is significantly reduced. To compare our work with previous methods, we implemented the architecture using Verilog HDL. We also executed simulation based on the logic synthesis using $0.18{\mu}m$ CMOS standard cells. The proposed architecture shows hardware reduction of up to 60.1% and 44.1% respectively at 200 MHz clock compared to previous works. This implementation results indicate that the proposed design performs efficiently in hardware cost, area, and power consumption.
Keywords
DWT; Lifting-scheme; Pattern search; Multiple constant multiplication; Folded architecture;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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