DocumentCode :
3745173
Title :
Unequal error protection for S3AC coding based on expanding window fountain codes
Author :
Liuyue Su;Ge Gao;Cheng Yang;Ruimin Hu;Xiaochen Wang;Xin Su
Author_Institution :
National Engineering Research Center for Multimedia Software, School of Computer Science, Wuhan University Wuhan, China
fYear :
2015
fDate :
7/1/2015 12:00:00 AM
Firstpage :
140
Lastpage :
145
Abstract :
This paper presents a coding scheme to improve the performance of three-dimensional (3D) audio. The scheme is designed by the idea of joint source channel coding (JSCC) and is implemented by Expanding Window Fountain (EWF) codes for the 3D audio bitstreams after source coding of spatial squeeze surround audio coding (S3AC). EWF is one of unequal error protection (UEP) LT codes and the proposed scheme is achieved by that method for the case of two levels. Different from other transmissions with equal error protection (EEP) for each part of bitstreams, when transmitting the two parts of the bitstreams with downmixed mono signals and spatial side information after S3AC coding, this approach provides more protection to the part of spatial side information and comparatively less protection to the downmixed mono signals, and results in the improvement of the performance of the reproduced 3D audio especially on the aspect of the spatial perception. Objective simulation experiment has shown the proposed UEP scheme achieves a better performance than the EEP scheme on the aspect of spatial perception, for the bits error rates (BER) of spatial parameters can decrease dramatically to a low value of about 10-4, but BERs of downmixed mono signals and the case of EEP just decrease slightly to about 10-3.
Keywords :
"Three-dimensional displays","Encoding","Decoding","Error correction codes","MONOS devices","Bit rate","Mobile computing"
Publisher :
ieee
Conference_Titel :
Computers and Communication (ISCC), 2015 IEEE Symposium on
Type :
conf
DOI :
10.1109/ISCC.2015.7405507
Filename :
7405507
Link To Document :
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