TY - GEN
T1 - Using an adaptive UPA scheme with a channel-aware OFDM technique for wireless transmission of JPEG2000 images
AU - Shayegannia, Moein
AU - Hajshirmohammadi, Atousa
AU - Muhaidat, Sami
PY - 2012
Y1 - 2012
N2 - In this paper, an adaptive scheme is developed for an Unequal Power Allocation (UPA) algorithm in a way to allow variable size grouping of the coding passes to enhance the optimization process at different Signal to Noise Ratio (SNR) values. The optimization algorithm exploits the hierarchical structure of the JPEG2000 images and uses a distortion model along with the channel state information (CSI) for allocating optimal values of power on each coding pass to minimize the end-to-end distortion. Orthogonal Frequency Division Multiplexing (OFDM) technique is incorporated within the transmitter to enable transmission of the JPEG2000 images over block fading frequency selective channels. In this paper, we propose a channel assignment strategy, within our OFDM transmitter, which passes the more important coding passes over the subcarriers with higher channel gain. Simulation results indicate an improvement of up to 2 dB in the decoded image quality and potentiality of energy conservation when the adaptive UPA scheme along with the channel assignment strategy are used.
AB - In this paper, an adaptive scheme is developed for an Unequal Power Allocation (UPA) algorithm in a way to allow variable size grouping of the coding passes to enhance the optimization process at different Signal to Noise Ratio (SNR) values. The optimization algorithm exploits the hierarchical structure of the JPEG2000 images and uses a distortion model along with the channel state information (CSI) for allocating optimal values of power on each coding pass to minimize the end-to-end distortion. Orthogonal Frequency Division Multiplexing (OFDM) technique is incorporated within the transmitter to enable transmission of the JPEG2000 images over block fading frequency selective channels. In this paper, we propose a channel assignment strategy, within our OFDM transmitter, which passes the more important coding passes over the subcarriers with higher channel gain. Simulation results indicate an improvement of up to 2 dB in the decoded image quality and potentiality of energy conservation when the adaptive UPA scheme along with the channel assignment strategy are used.
KW - adaptive unequal power allocation
KW - channel selection
KW - JPEG2000
KW - OFDM
KW - wireless image transmission
UR - http://www.scopus.com/inward/record.url?scp=84870454570&partnerID=8YFLogxK
U2 - 10.1109/CCECE.2012.6335011
DO - 10.1109/CCECE.2012.6335011
M3 - Conference contribution
AN - SCOPUS:84870454570
SN - 9781467314336
T3 - 2012 25th IEEE Canadian Conference on Electrical and Computer Engineering: Vision for a Greener Future, CCECE 2012
BT - 2012 25th IEEE Canadian Conference on Electrical and Computer Engineering
T2 - 2012 25th IEEE Canadian Conference on Electrical and Computer Engineering, CCECE 2012
Y2 - 29 April 2012 through 2 May 2012
ER -