A simplified decoding algorithm for multi-CRC polar codes

Polar codes represent one of the major breakthroughs in 5G standard, and have been proven to be able to achieve the symmetric capacity of binary-input discrete memoryless channels using the successive cancellation list (SCL) decoding algorithm. However, the SCL algorithm suffers from a large amount of memory overhead. This paper proposes an adaptive simplified decoding algorithm for multiple cyclic redundancy check (CRC) polar codes. Simulation results show that the proposed method can reduce the decoding complexity and memory space. It can also acquire the performance gain in the low signal to noise ratio region.