Investigation on Rate-Compatible Polar Codes Achieving Required Block Error Rates

In mobile-communication systems such as 5G and beyond, extremely high performance levels are required for a single radio access network to support very different types of traffic. The requisite channel codes in mobile-communication systems require higher throughput, extremely low latency, and low power consumption and have different inherent error rates. Also essential is a rate-compatible structure, which can generate the arbitrary coding rates. One of the ways in which the diverse demands of such systems could be met is through the use of polar codes. For polar codes, information bits need to be selected properly, as inappropriate information bits degrade the performance of the code. We propose the rate-compatible polar codes to achieve the required block-error rates. We have verified their performance by using a computer simulation and can show the effectiveness of our proposed method.