Patent ID: 8625702
Filing Date: 2014-01-07
Classification: H04B,H04L,H04N

Abstract:
1. A transmitting apparatus comprising: a first symbol generation section that selects one point of a first plurality of signal points as a first symbol, the first plurality of signal points being arranged per unit time on an IQ plane based on a first mapping pattern where a plurality of bits are allocated; a second symbol generation section that selects one point of a second plurality of signal points as a second symbol, the second plurality of signal points being arranged per unit time on the IQ plane based on a second mapping pattern where different bit allocation from the first mapping pattern is performed; a first antenna that transmits the first symbol; and a second antenna that transmits the second symbol in a common frequency and a common transmission time with the first symbol, wherein: the first symbol is arranged at a first position on the IQ plane where a first bit set in the plurality of bits is allocated; the first plurality of signal points are divided into four groups based on specific two bits in the plurality of bits; in each of the groups, the first plurality of signal points are arranged per first distance in a horizontal direction or in a vertical direction of the IQ plane; a minimum distance between signal points in one of the four groups and signal points in a rest of the four groups is a second distance which is different from the first distance; the second symbol is arranged at a second position on the IQ plane where the first bit set in the plurality of bits is allocated; and the second position and the first position are different.