Polar Coding for Processes with Memory

Eren Sasoglu; Ido Tal

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arXiv · 1602.01870

Polar Coding for Processes with Memory

Eren Sasoglu·Ido Tal

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Abstract

We study polar coding for stochastic processes with memory. For example, a process may be defined by the joint distribution of the input and output of a channel. The memory may be present in the channel, the input, or both. We show that $\psi$-mixing processes polarize under the standard Ar\i{}kan transform, under a mild condition. We further show that the rate of polarization of the \emph{low-entropy} synthetic channels is roughly $O(2^{-\sqrt{N}})$, where $N$ is the blocklength. That is, essentially the same rate as in the memoryless case.

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Eren Sasoglu, Ido Tal. 2016-02-04. Polar Coding for Processes with Memory. https://arxiv.org/abs/1602.01870

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