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Data Compression Conference (DCC '99)
Progressive Joint Source-Channel Coding in Feedback Channels
Snowbird, Utah
March 29-March 31
ISBN: 0-7695-0096-X
| ASCII Text | x | ||
| Jin Lu, Aria Nosratinia, Behnaam Aazhang, "Progressive Joint Source-Channel Coding in Feedback Channels," Data Compression Conference, pp. 140, Data Compression Conference (DCC '99), 1999. | |||
| BibTex | x | ||
| @article{ 10.1109/DCC.1999.755663, author = {Jin Lu and Aria Nosratinia and Behnaam Aazhang}, title = {Progressive Joint Source-Channel Coding in Feedback Channels}, journal ={Data Compression Conference}, volume = {0}, year = {1999}, issn = {1068-0314}, pages = {140}, doi = {http://doi.ieeecomputersociety.org/10.1109/DCC.1999.755663}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, } | |||
| RefWorks Procite/RefMan/Endnote | x | ||
| TY - CONF JO - Data Compression Conference TI - Progressive Joint Source-Channel Coding in Feedback Channels SN - 1068-0314 SP EP A1 - Jin Lu, A1 - Aria Nosratinia, A1 - Behnaam Aazhang, PY - 1999 VL - 0 JA - Data Compression Conference ER - | |||
It is well known that Shannon's separation result does not hold under finite computation or finite delay constraints, thus joint source-channel coding is of great interest for practical reasons. For progressive source-channel coding systems, efficient codes have been proposed for feed forward channels [1] and the important problem of rate allocation between the source and channel codes has been solved [2]. For memoryless channels with feedback, the rate allocation problem was studied in [3]. In this paper, we consider the case of the fading channels with feedback. Feedback routes are provided in many existing standard wireless channels, making rate allocation with feedback a problem of considerable practical importance. We address the question of rate allocation between the source and channel codes in the forward channel, in the presence of feedback information and under a distortion cost function. We show that the presence of feedback shifts the optimal rate allocation point, resulting higher rates for error-correcting codes and smaller overall distortion. Simulations on both memoryless and fading channels show that the presence of feedback allows up to 1 dB improvement in PSNR compared to the similarly optimized feed forward scheme.
Citation:
Jin Lu, Aria Nosratinia, Behnaam Aazhang, "Progressive Joint Source-Channel Coding in Feedback Channels," dcc, pp.140, Data Compression Conference (DCC '99), 1999
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