What is "polar code"

The international code of safety for ships operating in polar waters or Polar Code is an international regime adopted by the International Maritime Organization (IMO) in 2014.

In information theory, a polar code is a linear block error correcting code developed by Erdal Arıkan. It is the first code with an explicit construction to provably achieve the channel capacity for symmetric binary-input, discrete, memoryless channels (B-DMC) with polynomial dependence on the gap to capacity. Notably, polar codes have encoding and decoding complexity O(nlogn), which makes them practical for many applications.

Polar code may refer to:

• Polar code (maritime), a proposed international code of safety for ships operating in polar waters
• Polar code (coding theory), a capacity-achieving error-correcting code