Signal‐to‐noise ratio mismatch in polar codes
Qingshuang Zhang, Aijun Liu, Yingxian Zhang · Electronics Letters · 2016
Theoretically, the accurate signal‐to‐noise ratio (SNR) is necessary when using a successive cancelation (SC) or belief propagation (BP) decoder for polar codes. However, the effect of an SNR mismatch on the bit error rate performance of polar codes has not been addressed yet. The sensitivity of polar decoding with SC and BP decoders to the mismatch of SNR is studied. Theoretical and simulation results show that an estimation of SNR is not necessary for polar codes from a practical point of view.