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Loeffler DCT accelerator for small portable devices

Authors
Shen, Yong-luoJung, SeokjinOh, Hyeong-cheol
Issue Date
10-7월-2015
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Keywords
DCT; Loeffler algorithm; hardware accelerator; adders
Citation
IEICE ELECTRONICS EXPRESS, v.12, no.13
Indexed
SCIE
SCOPUS
Journal Title
IEICE ELECTRONICS EXPRESS
Volume
12
Number
13
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/93022
DOI
10.1587/elex.12.20150411
ISSN
1349-2543
Abstract
This letter proposes an efficient hardware accelerator of one-dimensional (1D) eight-point Loeffler discrete cosine transform (DCT) for small portable devices. For continuous 1D input data streams, the accelerator uses only 13 adders and can calculate one DCT coefficient per clock cycle, which is the optimal throughput for the considered applications. Implementation results show that the accelerator can support real-time encoding of practical video sequences and can be a good alternative for small portable applications.
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Oh, Hyeong Cheol
과학기술대학 (전자및정보공학과)
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