  The connections between variable nodes and check nodes have a great influence
on the performance of low-density parity-check (LDPC) codes. Inspired by the
unique structure of polar code's generator matrix, we proposed a new method of
constructing LDPC codes that achieves a polarization effect. The new code,
named as polarized LDPC codes, is shown to achieve lower or no error floor in
the binary symmetric channel (BSC)
