On the error exponent of variable-length block-coding schemes over finite-state Markov channels with feedback

Details On the error exponent of variable-length block-coding schemes over finite-state Markov channels with feedback On the error exponent of variable-length block-coding schemes over finite-state Markov channels with feedback

2007-07-13

arxiv.org/abs/0707.2014v1

Computer Science

Information Theory

Scientific paper

The error exponent of Markov channels with feedback is studied in the variable-length block-coding setting. Burnashev's classic result is extended and a single letter characterization for the reliability function of finite-state Markov channels is presented, under the assumption that the channel state is causally observed both at the transmitter and at the receiver side. Tools from stochastic control theory are used in order to treat channels with intersymbol interference. In particular the convex analytical approach to Markov decision processes is adopted to handle problems with stopping time horizons arising from variable-length coding schemes.

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