Error-Free Communication Over State-Dependent Channels with Variable-Length Feedback

Carol, Wang; Kovačević, Mladen; Tan, Vincent Y. F.

doi:10.1109/isit.2018.8437728

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2019

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“…739570). The work was presented at the 2018 IEEE International Symposium on Information Theory (ISIT) [17].…”

Section: Introductionmentioning

confidence: 99%

Fundamental Limits of Communication Over State-Dependent Channels With Feedback

Kovačević

Wang

Tan

2019

IEEE Trans. Commun.

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The fundamental limits of communication over state-dependent discrete memoryless channels with noiseless feedback are studied, under the assumption that the communicating parties are allowed to use variable-length coding schemes. Various cases are analyzed, with the employed coding schemes having either bounded or unbounded codeword lengths, and with state information revealed to the encoder and/or decoder in a strictly causal, causal, or non-causal manner. In each of these settings, necessary and sufficient conditions for positivity of the zero-error capacity are obtained and it is shown that, whenever the zeroerror capacity is positive, it equals the conventional vanishingerror capacity. Moreover, it is shown that the vanishing-error capacity of state-dependent channels is not increased by the use of feedback and variable-length coding. Both these kinds of capacities of state-dependent channels with feedback are thus fully characterized.

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“…739570). The work was presented at the 2018 IEEE International Symposium on Information Theory (ISIT) [17].…”

Section: Introductionmentioning

confidence: 99%