دانلود مقاله ISI انگلیسی شماره 78991
ترجمه فارسی عنوان مقاله

الگوریتم سریع بر اساس CORDIC برای قدرت از دو نقطه DCT و اجرای کارآمد VLSI .

عنوان انگلیسی
CORDIC based fast algorithm for power-of-two point DCT and its efficient VLSI implementation
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
78991 2014 9 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Microelectronics Journal, Volume 45, Issue 11, November 2014, Pages 1480–1488

ترجمه کلمات کلیدی
تبدیل کسینوسی گسسته (DCT)؛ مختصات چرخش کامپیوتر دیجیتال (CORDIC)؛ طراحی یکپارچه سازی در مقیاس بزرگ (VLSI)؛ ارایه خطی
کلمات کلیدی انگلیسی
Discrete cosine transform (DCT); Coordinate rotation digital computer (CORDIC); Very large-scale integration (VLSI) design; Linear array
پیش نمایش مقاله
پیش نمایش مقاله  الگوریتم سریع بر اساس  CORDIC  برای قدرت از دو نقطه DCT و اجرای کارآمد VLSI  .

چکیده انگلیسی

—In this paper, we present a coordinate rotation digital computer (CORDIC) based fast algorithm for power-of-two point DCT, and develop its corresponding efficient VLSI implementation. The proposed algorithm has some distinguish advantages, such as regular Cooley-Tukey FFT-like data flow, identical post-scaling factor, and arithmetic-sequence rotation angles. By using the trigonometric formula, the number of the CORDIC types is reduced dramatically. This leads to an efficient method for overcoming the problem that lack synchronization among the various rotation angles CORDICs. By fully reusing the uniform processing cell (PE), for 8-point DCT, only four carry save adders (CSAs)-based PEs with two different types are required. Compared with other known architectures, the proposed 8-point DCT architecture has higher modularity, lower hardware complexity, higher throughput and better synchronization.