Video communications with optimal intra/intermode switching over wireless Internet

Author

Shen, Yushi ; Cosman, Pamela C. ; Milstein, Laurence B.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA

Volume

2

fYear

2003

fDate

9-12 Nov. 2003

Firstpage

1548

Abstract

A robust scheme is presented for the efficient transmission of packet video over a heterogeneous channel. The channel consists of a wireless link with bit errors and a wired (e.g., Internet) channel with packet erasures. The scheme uses a source encoder that switches optimally between intracoding and intercoding with fixed-length packets. Different resynchronization schemes are considered and compared. A cyclic redundancy check (CRC) outer coder concatenated with an inner rate-compatible punctured convolutional (RCPC) coder are used as forward error correction (FEC). The scheme is evaluated over the simulated wireless Internet channel, and is shown to have promising performance.

Keywords

Internet; convolutional codes; cyclic redundancy check codes; error statistics; forward error correction; packet radio networks; packet switching; visual communication; bit errors; cyclic redundancy check outer coder; forward error correction; heterogeneous channel; inner rate-compatible punctured convolutional coder; intra-intercoding; optimal intra-intermode switching; packet erasures; packet video transmission; resynchronization schemes; video communications; wired channel; wireless Internet channel; wireless link; Communication switching; Concatenated codes; Convolutional codes; Cyclic redundancy check; Cyclic redundancy check codes; Forward error correction; Internet; Packet switching; Robustness; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on

Print_ISBN

0-7803-8104-1

Type

conf

DOI

10.1109/ACSSC.2003.1292245

Filename

1292245