A Hybrid FEC Method Using Packet-Level Convolution and Reed-Solomon Codes

Jun TAKAHASHI
Hideki TODE
Koso MURAKAMI

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B    No.8    pp.2143-2151
Publication Date: 2006/08/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.8.2143
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
Keyword: 
forward error correction,  Reed-Solomon codes,  convolutional codes,  packet interleaving,  

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Summary: 
Efficient real-time contents distribution services on the Internet are only possible by suppressing the influence of packet losses. One solution for UDP transmission is the use of Forward Error Correction (FEC) based on Reed-Solomon codes. However, a more efficient method is required since this causes the increase of network traffic and includes the weakness to burst packet losses. In this paper, we propose a data recovery method that generates redundant data with the combination of Reed-Solomon codes and convolution of neighboring blocks. We realize the small amount of redundancy and the high reliability in data transmission compared with using only Reed-Solomon codes in the environment that burst packet losses are occurred frequently. We implement proposal method into the network bridge and confirm its efficiency from the viewpoint of data reconstruction from burst packet losses.