DocumentCode :
1697313
Title :
Unequal Power Allocation for Transmission of JPEG2000 Images over Wireless Channels
Author :
Torki, Mahin ; Hajshirmohammadi, Atousa
Author_Institution :
Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada
fYear :
2009
Firstpage :
1
Lastpage :
6
Abstract :
In this paper, we present an unequal power allocation method that exploits the hierarchical structure of JPEG2000 coded bitstream, along with the channel state information, to assign different transmission powers to different parts of the bitstream at the coding pass level. Based on the information from the JPEG2000 bitstream, we first develop a distortion model to evaluate the distortion of the reconstructed image in terms of the power assigned to each coding pass within the bitstream. Using this model and the channel information, the powers are calculated such that the distortion of the decoded image is minimized. Simulation results show up to 7 dB improvement in the decoded image quality compared to the case of equal power allocation and up to 4 dB enhancement compared to the state-of-the-art methods proposed for the transmission of JPEG2000 streams over wireless channels.
Keywords :
image coding; wireless channels; JPEG2000 coded bitstream; JPEG2000 image transmission; channel state information; distortion model; unequal power allocation; wireless channel; Channel state information; Decoding; Error correction codes; Forward error correction; Image coding; Image quality; Power engineering and energy; Reed-Solomon codes; Robustness; Streaming media;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE
Conference_Location :
Honolulu, HI
ISSN :
1930-529X
Print_ISBN :
978-1-4244-4148-8
Type :
conf
DOI :
10.1109/GLOCOM.2009.5425996
Filename :
5425996
Link To Document :
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