Variable bit-rate coding of video signals for ATM networks

Author

Kishino, Fumio ; Manabe, Katsutoshi ; Hayashi, Yasuhito ; Yasuda, Hiroshi

Author_Institution

NTT Human Interface Lab., Kanagawa, Japan

Volume

7

Issue

5

fYear

1989

fDate

6/1/1989 12:00:00 AM

Firstpage

801

Lastpage

806

Abstract

Statistical characteristics of video signals for video packet coding, are clarified and a variable-bit-rate coding method for asynchronous transfer mode (ATM) networks is described that is capable of compensating for packet loss. ATM capabilities are shown to be greatly affected by delay, delay jitter, and packet loss probability. Packet loss has the greatest influence on picture quality. Packets may be lost either due to random bit error in a cell header or to network control when traffic is congested. A layered coding technique using discrete-cosine transform (DCT) coding is presented which is suitable for packet loss compensation. The influence of packet loss on picture quality is discussed, and decoded pictures with packet loss are shown. The proposed algorithm was verified by computer simulations

Keywords

decoding; digital communication systems; encoding; packet switching; picture processing; statistical analysis; telecommunication networks; video signals; visual communication; ATM networks; DCT coding; asynchronous transfer mode networks; cell header; delay jitter; discrete-cosine transform; layered coding technique; network control; packet loss compensation; packet loss probability; picture quality; random bit error; statistical characteristics; traffic congestion; variable-bit-rate coding; video packet coding; video signals; Asynchronous transfer mode; Communication system traffic control; Decoding; Delay; Discrete cosine transforms; Discrete transforms; Error correction; Jitter; Probability; Traffic control;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.32343

Filename

32343