Coding theory
study of the properties of codes and their fitness for a specific application according to its environment constraints
Coding theory is the study of properties of codes and how good they are for a use in the real world. Codes are used for data compression (where data is made smaller), cryptography (where data is changed into a form that not everyone can read), and error correction. Codes are studied by different scientific disciplines for designing data transmission methods that are efficient and reliable.
