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 Joint Design of Fixed-Rate Source Codes and UEP Channel ...
source code, so there is no channel coding. This corresponds to standard COVQ :5]. Intermediate values of R, correspond to a redundancy tradeoff in the source and channel codes. The joint code designcorresponding to the (Rd, R,) pair with minimal distortion is chosen as the final joint code design....
Joint Design of Fixed-Rate Source Codes and ...
Channel-optimized source coding is another approach to joint source and channel coding. In this scenario, the source code maps the set of source symbols (scalars or vectors from the source alphabet) to binary strings for transmission over the channel. In fixed-rate source coding, the effect of a channel...
Optimization for image transmission over varying channel ...
Therefore, an important issue in image transmission is to design a protection strategy for the source data, i.e., allocating channel code rates to different data packets, based on the channel condition and the rate-distortion feature of the source, in order to optimize the overall recovery quality of image in the noise channel....
1 Iterative Decoding of JPEG Coded Images with Channel Coding
and infinite channel code block length. For practical systems, a joint source-channel coding (JSCC) design may reduce distor-tion, as well as complexity and delay. In JSCC design, the rate-distortion (R-D) method [2] is an analytic approach towards optimal bit rate allocation between source and channel encoders. Several JSCC approaches have...
Transmission of Still Images Using Low-Complexity Analog ...
An analog joint source-channel coding (JSCC) system designed for the transmission of still images is proposed and its performance is compared to that of two digital alternatives which differ in the source encoding operation: Joint Photographic Experts Group (JPEG) and JPEG without entropy coding (JPEGw/oEC), respectively, both relying on an optimized channel encoder–modulator tandem....
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