log map 解码算法的仿真及与其他算法的比较,log map decoding algorithm simulation and comparison with other algorithms

library ieee use ieee.std_logic_1164.all entity decoder is port (clk:in std_logic clr:in std_logic data_in:in std_logic --待解码信元输入端； data_out:out std_logic) --解码信元输出端； end decoder architecture behave of decoder is component dff2