Patent ID: 9065499
Filing Date: 2015-06-23
Classification: H04B,H04L,H04W

Abstract:
1. A transmission signal generator comprising: a signal processing section configured to generate 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 plane using a first mapping pattern that is based on a predetermined modulation scheme, and the second modulated symbol sequence obtained by sequentially mapping a second set of bits to signal points in the in-phase and quadrature plane using a second mapping pattern that is based on the predetermined modulation scheme; and an outputter configured to output 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 includes an amplitude obtained by changing an amplitude of a third mapping pattern, the third mapping pattern depending on the predetermined modulation scheme; the second mapping pattern includes an amplitude obtained by changing an amplitude of the third mapping pattern and a phase obtained by changing a phase of the third mapping pattern toward a predetermined direction; and signal points obtained by mapping a predetermined set of bits in the in-phase and quadrature plane according to the first mapping pattern and signal points obtained by mapping the predetermined set of bits in the in-phase and quadrature plane according to the second mapping pattern include one or more different signal points from each other.