查看文章

Methods, systems, and devices are described for wireless communications at a wireless device. A wireless device may adaptively select a parity check matrix to increase the reliability of signal transmission by adapting to different channel statistics and channel types (eg, erasure channels, channels with additive white Gaussian noise, and channels with discrete or continuous alphabets). For example, polar ization codes (ie, codes based on rows of a polarization matrix) may be used to construct parity check matrices “on-the-fly” given an estimation of dynamic channel con ditions or diverse channel structures. The channel may be decomposed into polarized Sub-channels corresponding to the polarization codes, and mutual information profiles may be determined for each of the polarized sub-channels. The parity check matrix corresponding to the polarization codes may be constructed based on the mutual …