| 摘要 |
A method for creating cyclic permutation matrices P, with an arbitrary size Z X Z set by a parameter Z, and which are used to create one or more LDPC related matrices in OFDMA systems, comprising: Defining an integer value Z; Creating an initial matrix; Creating a matrix by using cyclic shifts to each row; Repeating stage 3, up to Z-2 times as required, thus creating up to Z-2 matrices: P(0)... P(Z-1); Creating an additional stairs matrix P(st). A method for using cyclic permutation matrices, with a fixed size Z X Z set by a parameter Z, and which are used to create one or more LDPC related matrices in OFDMA systems, comprising: Defining an integer value Z; Storing in memory means an initial matrix and its cyclic shifts permutations, thus keeping in memory means matrices: P(0)...P(Z-1); Storing an additional stairs matrix P(st); Using these matrices to create LDPC related matrices or LDPC operations. |
