We present a new framework for constructing polar codes (i.e., selecting the frozen bit positions) for arbitrary channels, tailored to a given decoding algorithm rather than assuming the (not ...

We describe a novel approach to interpret a polar code as a low-density parity-check (LDPC)-like code with an underlying sparse decoding graph. This sparse graph is based on the encoding factor graph ...

And that’s also why forecasts recently adjusted to account for the polar vortex disruption show the northeastern and midwestern U.S. could feel more extreme winter weather in the coming weeks.