主权项 |
1. A radio communication apparatus comprising:
a receiver, which, in operation, receives control information indicating a number of bits; a generator, which, in operation, generates a bit sequence by forcibly setting each of the number of bits indicated by the control information of a plurality of bits to a 1, the plurality of bits forming a modulation symbol in the bit sequence; and a modulator, which, in operation, modulates the bit sequence by mapping the plurality of bits on a single modulation mapper, the single modulation mapper having first signal points, wherein said generator forcibly sets each of the number of bits to the 1 in a way that the plurality of bits are mapped to one of second signal points, which are a part of the first signal points, a distance between the second signal points being equivalent to a largest of distances existing among the first signal points in an I-Q plane of the single modulation mapper. |