Title :
Combined joint source-channel coding and channel estimation for image transmissions over wireless channels
Author :
Xiaowen Wang ; Jie Song ; Liu, K.J.R.
Author_Institution :
Agere Syst., Murray Hill, NJ, USA
Abstract :
Joint source and channel coding (JSCC), multicarrier modulation (MCM) and diversity are some key techniques for multimedia transmission over wireless channels. We investigate a joint source channel matching (JSCM) scheme for progressive image transmission in the MCM system using multiple antennas. The focus of this work is on the effect of the practical channel estimation schemes on the JSCM algorithm. This is different from other research on JSCC assuming perfectly known channel information. We propose a model-based channel estimation scheme and use it.
Keywords :
combined source-channel coding; image coding; modulation coding; multimedia communication; packet radio networks; visual communication; diversity; joint source channel coding; joint source channel matching; model-based channel estimation; multicarrier modulation; multimedia transmission; multiple antennas; progressive image transmission; wireless channels; Channel estimation; Discrete Fourier transforms; Gaussian noise; Image coding; Image communication; Modulation coding; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Multimedia Signal Processing, 2001 IEEE Fourth Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-7025-2
DOI :
10.1109/MMSP.2001.962771
