Wireless video conferencing using multiple description coding

Author

Sehgal, Aizshul ; Jagmohan, Ashish ; Ahuja, Narendra

Author_Institution

Beckman Inst., Illinois Univ., Urbana, IL, USA

Volume

5

fYear

2001

fDate

2001

Firstpage

303

Abstract

The transmission of video over wireless is a particularly involved problem-requiring as it does the transmission of a variable length highly compressed, delay-sensitive stream over an error prone medium. In this paper, this problem is addressed within the multiple description coding paradigm. In particular the problem of wireless video conferencing over a constant bit-rate channel is addressed. A low-complexity, low-delay adaptive coder that uses multiple description coding to combat channel errors is proposed. Error propagation is curtailed by using a leaky prediction mechanism. A low-complexity rate control scheme based on the LMS algorithm is also proposed

Keywords

adaptive signal processing; digital radio; errors; fading channels; least mean squares methods; prediction theory; redundancy; teleconferencing; video coding; visual communication; LMS algorithm; channel errors; constant bit-rate channel; error propagation reduction; leaky prediction mechanism; low-complexity adaptive coder; low-complexity rate control scheme; low-delay adaptive coder; multiple description coding; wireless video conferencing; Bit error rate; Degradation; Delay; Fading; Frequency; Least squares approximation; Redundancy; Streaming media; Video compression; Videoconference;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.922045

Filename

922045