TRANSMISSION DEVICE, RECEPTION DEVICE, RELAY DEVICE, COMMUNICATION SYSTEM, TRANSMISSION METHOD, RECEPTION METHOD, RELAY METHOD, COMMUNICATION METHOD, COMPUTER PROGRAM, AND SEMICONDUCTOR CHIP

摘要

[Object] To estimate a channel with high accuracy by a receiver without an increase in scale or an increase in power consumption of a device because of use of complicated calculation, even when a transmission device or a relay device uses different frequencies.;[Solution] A mapping unit that provides a frequency allocation that is different for each of transmit antennas; and a reference signal generator that determines a reference signal sequence for each of the transmit antennas so that the same sequence is transmitted from the transmit antennas with each frequency after the mapping by the mapping unit, are included.