A forward error recovery technique for real-time MPEG-2 video transport and its performance over wireless IEEE 802.11 LAN

Author

Pillai, Radhakrishna ; Prabhakaran, B. ; Qiang, Qiu

Author_Institution

Kent Ridge Digital Labs., Singapore

fYear

2000

fDate

2000

Firstpage

497

Lastpage

502

Abstract

Real-time MPEG-2 video transport applications do not usually have the luxury of a reverse channel for recovering from any errors that might occur during communication. Degradation in quality of decoded video frames is immediately apparent in the presence of errors in headers. In this paper, we focus on protecting header information by replicating it in any free space that might be available in the defined MPEG-2 transport stream packets. We also present our implementation experience over wired ATM as well as wireless IEEE 802.11 LAN by incorporating this forward error recovery approach with a real-time MPEG-2 encoder. In our experiments, it is found that the free space available is generally more than adequate for replicating essential header information

Keywords

IEEE standards; asynchronous transfer mode; forward error correction; real-time systems; video coding; visual communication; wireless LAN; MPEG-2 transport stream packets; available free space; decoded video frames; forward error recovery technique; header errors; header information protection; quality degradation; real-time MPEG-2 video transport; reverse channel; wired ATM; wireless IEEE 802.11 LAN; Decoding; Degradation; Local area networks; Payloads; Protection; Real time systems; Streaming media; Transform coding; Video compression; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Communications and Networks, 2000. Proceedings. Ninth International Conference on

Conference_Location

Las Vegas, NV

ISSN

1095-2055

Print_ISBN

0-7803-6494-5

Type

conf

DOI

10.1109/ICCCN.2000.885535

Filename

885535