Bit-wise Unequal Error Protection for Variable Length Block Codes with Feedback

Details Bit-wise Unequal Error Protection for Variable Length Block Codes with Feedback Bit-wise Unequal Error Protection for Variable Length Block Codes with Feedback

2011-01-10

arxiv.org/abs/1101.1934v2

Computer Science

Information Theory

43 Pages, 3 figure

Scientific paper

The bit-wise unequal error protection problem is considered for variable length block codes with feedback. We suggest encoding schemes, based on fixed length block codes with erasures and establish inner bounds to the achievable performance for finite expected decoding time. In addition we establish outer bounds to the performance of variable length block codes. Inner and outer bounds match one another asymptotically and characterise the achievable region of rate vector-error exponent vector pairs, completely. The single message message-wise unequal error protection problem is also solved as a necessary step on the way, for variable length block codes with feedback.

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