Patent ID: 8767864

Claim:
A transmitting apparatus comprising: a signal processing section that generates a first modulated symbol sequence and a second modulated symbol sequence, the first modulated symbol sequence obtained by sequentially mapping a first set of bits to signal points in an in-phase and quadrature (I-Q) plane using a first mapping pattern that is based on a predetermined modulation method, the second modulated symbol sequence obtained by sequentially mapping a second set of bits to signal points in the I-Q plane using a second mapping pattern that is based on the predetermined modulation method; and a plurality of antennas that transmit the first modulated symbol sequence and the second modulated symbol sequence in a same frequency and at a same time, wherein: the first mapping pattern is a mapping pattern changed in amplitude from a third mapping pattern, the third mapping pattern depending on the predetermined modulation method; the second mapping pattern is a mapping pattern changed in amplitude from the third mapping pattern and having a phase that is changed from a phase of the third mapping pattern toward a predetermined direction; and signal points obtained by mapping a predetermined set of bits in the I-Q plane according to the first mapping pattern and signal points obtained by mapping the predetermined set of bits in the I-Q plane according to the second mapping pattern are different from each other.