NDLI: Joint source-channel coding based on adaptive wavelet pretreatment for image transmission over frequency selective fading channel

Content Provider	IEEE Xplore Digital Library
Author	Rui Guo Ping Zhou Ji-lin Liu
Copyright Year	2006
Description	Author affiliation: Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou (Rui Guo)
Abstract	In order to improve the error resilient ability and transmission efficiency for image transmission over wireless frequency selective fading channels, a joint source-channel coding (JSCC) scheme was proposed. In which, MIMO-OFDM and adaptive wavelet pretreatment were combined together. MIMO-OFDM was used to deal with frequency-selective, time dispersive characterize of wireless fading channels; adaptive wavelet pretreatment was adopted to decrease the encoder complexity whilst maintaining the transmission quality to acceptable level. To guarantee the quality of reconstructed image, the wavelet pretreatment block was adopted or removed adaptively according to the variety of channel condition. The channel condition was indicated by the variety of the source packet size allocated to OFDM sub-channels, rather than the feedback information from the receiver as usual. Simulation results show that: the proposed scheme can support robust image transmission with high quality and low complexity in various channel conditions; When the channel condition is good (SNR=9 dB) the complexity of the encoder decrease to 1/3, but the PSNR of the received image lose less than 3 unit; when channel is worse (SNR<4dB) the pretreatment block is removed adaptively
Starting Page	1411
Ending Page	1415
File Size	1741381
Page Count	5
File Format	PDF
ISBN	1424405289
DOI	10.1109/ICIA.2006.305962
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading UEP PSNR Image communication OFDM JSCC Dispersion Image reconstruction SPIHT Image coding Feedback MIMO-OFDM Frequency wavelet pretreatment Robustness
Content Type	Text
Resource Type	Article

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