A high throughput parallel AVC/H.264 context-based adaptive binary arithmetic decoder

In this paper, based on the proposed parallelization scheme of binary arithmetic decoding, a parallel AVC/H.264 con text-based adaptive binary arithmetic coding (CABAC) de coder with high throughput is proposed. Following the top down design methodology, algorithm analyzing and data flow modeling in...

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Bibliographic Details
Published in2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) pp. 1729 - 1732
Main Authors Jia-Wei Liang, He-Yuan Lin, Gwo Giun Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2011
Subjects
Context
Context modeling
Decoding
Encoding
Parallel processing
Parallelization
Throughput
Viterbi algorithm
Viterbi decoder
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Summary:In this paper, based on the proposed parallelization scheme of binary arithmetic decoding, a parallel AVC/H.264 con text-based adaptive binary arithmetic coding (CABAC) de coder with high throughput is proposed. Following the top down design methodology, algorithm analyzing and data flow modeling in both high and low granularities are per formed to achieve the proposed architecture. According to the analysis for algorithm, the similarity between CABAC decoder and Viterbi decoder is found to extend the degree of parallelism for binary arithmetic decoding. The application of proposed design is specified to support AVC/H.264 High Profile, 4.2 Level, and 1920 × 1088 resolution at 64 frames per second. By increasing the degree of parallelism of bin decoding, the throughput of the proposed architecture is shown by the experiments to have improved 3.5 times as compared to the sequential bin decoding, and the decoded bin per second can reach 378M at clock speed 108MHz.
ISBN:9781457705380
1457705389
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2011.5946835