Bit-Wise Unequal Error Protection for Variable-Length Block Codes With Feedback

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2013-03-01

Author

Nakiboğlu, Barış
Zheng, Lizhong
Coleman, Todd P

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The bit-wise unequal error protection problem, for the case when the number of groups of bits is fixed, is considered for variable-length block codes with feedback. An encoding scheme based on fixed-length block codes with erasures is used to establish inner bounds to the achievable performance for finite expected decoding time. A new technique for bounding the performance of variable-length block codes is used to establish outer bounds to the performance for a given expected decoding time. The inner and the outer bounds match one another asymptotically and characterize the achievable region of rate-exponent vectors, completely. The single-message message-wise unequal error protection problem for variable-length block codes with feedback is also solved as a necessary step on the way.

Subject Keywords

Unequal Error Protection(UEP), Feedback, Variable-Length communication, Block codes, Error exponents, Burnashev’s exponent, Yamamoto-Itoh scheme, Kudryashov’s signaling, Errors-and-Erasures decoding variable length block coding, Discrete memoryless channels (DMCs)

URI

https://hdl.handle.net/11511/37035

Journal

IEEE TRANSACTIONS ON INFORMATION THEORY

DOI

https://doi.org/10.1109/tit.2012.2227671

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Department of Electrical and Electronics Engineering, Article

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Unequal Error Protection: An Information-Theoretic Perspective Borade, Shashi; Nakiboğlu, Barış; Zheng, Lizhong (2009-12-01) An information-theoretic framework for unequal error protection is developed in terms of the exponential error bounds. The fundamental difference between the bit-wise and message-wise unequal error protection (UEP) is demonstrated, for fixed-length block codes on discrete memoryless channels (DMCs) without feedback. Effect of feedback is investigated via variable-length block codes. It is shown that, feedback results in a significant improvement in both bit-wise and message-wise UEPs (except the single mess...
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Citation Formats

B. Nakiboğlu, L. Zheng, and T. P. Coleman, “Bit-Wise Unequal Error Protection for Variable-Length Block Codes With Feedback,” IEEE TRANSACTIONS ON INFORMATION THEORY, pp. 1475–1504, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37035.