https://blog.gongquiz.com/2022/01/03/%eb%8b%a4%ec%9d%8c-%ec%a4%91-fecforward-error-correction%ec%9d%98-%ed%8a%b9%ec%a7%95%ec%9d%b4-%ec%95%84%eb%8b%8c-%ea%b2%83%ec%9d%80-%ec%a0%95%eb%b3%b4%ed%86%b5%ec%8b%a0%ea%b8%b0%ec%82%ac-2021/