  Bit flipping can be used as a postprocessing technique to further improve the
performance for successive cancellation list (SCL) decoding of polar codes.
However, the number of bit-flipping trials could increase the decoding latency
significantly, which is not welcome in practice. In this paper, we propose a
low latency SCL bit flipping decoding scheme, which is restricted to just
single round of post-processing. The use of multiple votes for a more accurate
estimation of path survival probability is proposed to locate the first error
event of SCL decoding. Simulations show the sound improvement compared to the
existing SCL bit-flipping decoding methods.
