| 摘要 |
PROBLEM TO BE SOLVED: To prevent erroneous pull-in of a signal lattice point of a reception signal and to appropriately compensate for offset of a position where the signal lattice point is disposed.SOLUTION: A radio reception device 10 comprises: a monitoring part 16b which outputs a monitoring result by monitoring positions of a plurality of outermost shell signal lattice points disposed at positions of outermost shells of a number of signal lattice points S which are demodulated from a reception signal of a multi-level modulation system and disposed in a matrix shape; an erroneous pull-in determination part 17 which outputs a determination result by determining erroneous pull-in that a number of signal lattice points S are disposed at erroneous positions, on the basis of the monitoring result; an offset calculation part 16a which outputs a calculation result by calculating an offset direction of a number of signal lattice points S; and an offset compensation part 14 which performs offset compensation on the basis of the calculation result if the determination result of erroneous pull-in is outputted from the erroneous pull-in determination part 17.SELECTED DRAWING: Figure 3 |
