Open AccessHigh‐throughput CABAC codec architecture for HEVC
Author(s) -
Choi Yongseok,
Choi Jongbum
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.1811
Subject(s) - computer science , context adaptive binary arithmetic coding , codec , context adaptive variable length coding , entropy encoding , throughput , megabit , decoding methods , coding (social sciences) , computer architecture , data compression , multiview video coding , parallel computing , computer hardware , algorithm , video processing , video tracking , mathematics , operating system , telecommunications , statistics , wireless
A VLSI architecture of a context adaptive binary arithmetic coding (CABAC) entropy codec for high‐efficiency video coding (HEVC), the next generation video coding standard, is presented and analysis of its performance in terms of effective processing throughput, i.e. bin/s, is provided. For high throughput, the architecture is designed to process up to two regular bins per unit time while minimising pipeline stall due to inherent dependencies of CABAC through various optimisations including context forwarding and speculative decoding. The experiments show that the effective throughput is achieved up to 1.60 bins or 1.41 bits per cycle, which corresponds to 469.5 Mbit/s at the operating frequency of 333 MHz, under practical video coding environments.