MULTI CARRIER TRANSMISSION DEVICE, MULTI CARRIER RECEPTION DEVICE, AND COMMUNICATION METHOD

摘要

Provided is a multi carrier transmission device capable of compensating the delay time and the imbalance and the orthogonal difference between the in-phase component and the orthogonal component of the amplitude at a low cost without increasing the circuit size. In this device, a coordinate conversion unit (103) performs coordinate conversion of each symbol of m-series transmission signals so as to be symmetric with respect to the I-axis or the Q-axis of the I-Q plane or a line passing through the origin and having a positive 45-degree inclination with respect to the I-axis. A sub carrier arrangement unit (104) generates 2m-series parallel complex signals so that the symbols before and after the coordinate conversion with symmetry with respect to the I-axis or the Q-axis of the I-Q plane or a line passing through the origin and having a positive 45-degree inclination with respect to the I-axis are arranged on symmetric sub carries on the frequency axis with respect to a central frequency of a predetermined communication band.