Character of Channel Polarization in Symmetric Binary-Input Discrete Memoryless Channel

摘要

Channel polarization is a new method for constructing capacity-achieving codes on binary-input discrete memoryless channel (B-DMC). How the block length, the erasure probability and threshold of the polarization affect the level of polarization is studied in this paper. Simulation results show that the polarization phenomenon becomes more and more obviously with the increase of the block length and the decrease of the erasure probability. Furthermore, the smaller the threshold of the polarization, the fewer the number of polarization channels is.