Polar coding has been adopted in the fifth generation (5G) wireless communication standard, primarily for control channel encoding and decoding in the ultra-reliable and low latency communication (URLLC), and massive machine-type Communication (mMTC) scenario due to its strong error-correcting capability and efficiency. This paper offers a comprehensive examination of polar codes, emphasising their design principles and particular functions in the context of 5G. Fundamental ideas are examined, including channel polarisation and the benefits of polar codes over more conventional methods like Turbo and low-density parity-check (LDPC) codes. It is detailed how polar codes are included in the 5G standard, particularly for the Physical Downlink Control Channel (PDCCH) and Physical Uplink Control Channel (PUCCH), and how they improve data speed, latency, and reliability. Notwithstanding these advantages, several research gaps still exist, such as the requirement for better decoding algorithms to lower complexity and latency, difficulties with effective hardware implementation, and the requirement for adaptable code building to change with the channel. This paper also looks at current initiatives to fine-tune polar codes for real-time deployment and integration with cutting-edge 5G technologies like network slicing and enormous multiple-input multiple-output (MIMO). To sum up, this paper highlights how artificial intelligence techniques can improve the functionality and adaptability of polar codes. It also identifies areas for future research, including improved coding techniques, low-power hardware design, and expanding the applicability of polar codes to next-generation networks beyond 5G.
Sivasankari et al. (Mon,) studied this question.