Title :
Low-error carry-free fixed-width multipliers and their application to DCT/IDCT
Author :
Tso-Bing Juang ; Shen-Fu Hsiao ; Shiann-Rong Kuang ; Tsai, Ming Yu
Author_Institution :
Dept. of Comput. Sci. & Eng., National Sun Yat-sen Univ., Kaohsiung, Taiwan
Abstract :
In this paper, we propose a low-error fixed-width redundant multiplier design. The design is based on the statistical analysis of the value of the truncated partial products in binary signed-digit representation with modified Booth encoding. The overall truncation error is significantly reduced with negligible hardware overhead. Simulation on DCT/IDCT of images with 256 gray levels shows our proposed multiplication design has higher PSNR/SNR.
Keywords :
image coding; multiplying circuits; statistical analysis; DCT/IDCT; PSNR/SNR; binary signed-digit representation; carry-free multipliers; fixed-width multipliers; low-error multipliers; modified Booth encoding; multiplication design; multiplier design; redundant multiplier; statistical analysis; truncated partial products; truncation error; Adders; Application software; Circuits; Computer science; Design engineering; Discrete cosine transforms; Encoding; Finite impulse response filter; Finite wordlength effects; Hardware;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412795
