LDPC码校验节点（checknode）进行奇偶校验方程时的vhdl编程，硬件语言实现-LDPC check nodes (checknode) carried out at the time of parity equation VHDL programming, hardware language

LDPC码的消息节点（Bitnode）消息更新过程的VHDL语言实现-LDPC code of the message node (Bitnode) news update process of the VHDL language