Title :
A hierarchical image transmission system for multimedia mobile communication
Author :
Morimoto, Masakazu ; Okada, Minoru ; Komaki, Shozo
Author_Institution :
Dept. of Commun. Eng., Osaka Univ., Japan
Abstract :
This paper proposes a new mobile image transmission system based on the hierarchical modulation scheme for achieving a high quality and high speed digital image transmission in a band-limited fading channel. The proposed system uses a hierarchical QAM (quadrature amplitude modulation) scheme to give unequal transmission reliability depending on the significance of DCT (discrete cosine transform) based compressed images. Computer simulation results show that the proposed system is an effective high-quality and high-speed image transmission technique in the band-limited fading channel
Keywords :
Rayleigh channels; data communication; data compression; digital radio; discrete cosine transforms; fading; image coding; land mobile radio; multimedia communication; quadrature amplitude modulation; telecommunication network reliability; transform coding; visual communication; DCT; band-limited fading channel; compressed images; digital image transmission; discrete cosine transform; hierarchical QAM; hierarchical image transmission system; hierarchical modulation scheme; mobile image transmission; multimedia mobile communication; quadrature amplitude modulation; transmission reliability; Bandwidth; Discrete cosine transforms; Fading; Image coding; Image communication; Mobile communication; Multimedia communication; Multimedia systems; Quadrature amplitude modulation; Source coding;
Conference_Titel :
Wireless Image/Video Communications, 1996., First International Workshop on
Conference_Location :
Loughborough
Print_ISBN :
0-7803-3610-0
DOI :
10.1109/WIVC.1996.624656
