A collection of LDPC(Low-Density Parity-Codes) tools. Including: Code construction; Density Evolution; Decoding Algorithm; Girth average Counter; Stopping set and error Floor,etc.

• 低密度奇偶校验编码应用工具集，包括编码建构,密度布局演化,解码演算,周长平均计量,停转设定与错误层控制