A Review on the Concept of Polar Codes

Abstract

Polar codes developed by Erdal Arikan are error correction codes which achieve the channel capacity with the added advantage of reduced complexity. Being a breakthrough in the coding theory, a large number of studies are going on in this field. Different schemes have been proposed over these years for the generation, encoding and decoding of polar codes. Any N bits of data can be polar coded and can be transmitted through any channel. An important area of research is the decoder part and one of the widely used methods of decoding is successive cancellation. The reduced complexity is an attractive feature of this trending coding scheme with an overall encoding and decoding complexity of O (NlogN) for a block length of N. The most promising 5G technology finds a great potential in the polar coding scheme. A review on the path of researches till day in this field is presented here.