CRC-aided logarithmic stack decoding of polar codes for ultra reliable low latency communication in 3GPP new radio

A detailed tutorial on the Cyclic Redundancy Check (CRC)-aided Logarithmic Successive Cancellation Stack (Log-SCS) algorithm. We apply these algorithms for the ultra-reliable decoding of polar codes, which has relevance for the control channels of the Ultra-Reliable Low Latency Communication (URLLC) version of the Third Generation Partnership Project (3GPP) New Radio (NR).