| 摘要 |
PROBLEM TO BE SOLVED: To obtain a desired reception property with less candidates to be selected.SOLUTION: A reception device includes a lattice reduction base conversion/QR decomposition part 21, a reception data Q conversion part 23 and a list decoding processing part 30. The lattice reduction base conversion/QR decomposition part 21 decomposes a channel response matrix into a quadrature matrix and an upper triangular matrix, calculates a lattice reduction base conversion matrix and an inverse matrix thereof for the channel response matrix and performs lattice reduction base conversion on the quadrature matrix and the upper triangular matrix, respectively. The reception data conversion part 23 linearly converts a reception signal by using the quadrature matrix or the quadrature matrix on which the lattice reduction base conversion has been performed. The list decoding processing part 30 selects a predetermined number of candidates of a symbol from the linearly converted reception signal. For each layer corresponding to a reception signal component, the list decoding processing part 30 re-calculates a range for the candidates of the symbol on the basis of the candidates of symbols successively selected in a preceding layer and selects the predetermined number of candidates of the symbol within the re-calculated range.SELECTED DRAWING: Figure 5 |
