| 摘要 |
An encoder and decoder using LDPC-CC (Low Density Parity Check-Convolutional Codes). An encoding rate setting unit sets an encoding rate (s-1)/s (s=z), and an information creating unit sets information including from information Xs,i to information Xz-1,i to zero. A first information computing unit receives information X1,i at time point i to compute the X1(D) term of a formula. A second information computing unit receives information X2,i at time point i to compute the X2(D) term of the formula. A third information computing unit receives information X3,i at time point i to compute the X3(D) term of the formula. A parity computing unit receives parity Pi-1 at time point i-1 to compute the P(D) of the formula. The exclusive OR of the results of the computation is obtained as parity Pi at time i. |
