PRE-CODING DEVICE, WIRELESS TRANSMISSION DEVICE, WIRELESS RECEIVING DEVICE, WIRELESS COMMUNICATION SYSTEM, AND INTEGRATED CIRCUIT

摘要

The present invention is a wireless communication system in which a plurality of pre-coding is selectively or simultaneously used, wherein the system ascertains whether a terminal device is performing a pre-coding without increasing overhead. A pre-coding device used in a wireless transmission device for carrying out wireless transmission with a wireless receiving device, wherein a data signal and a plurality of types of characteristic reference signals are subjected to pre-coding on the basis of control information acquired from the wireless receiver, a phase rotation is imparted to each of the types of characteristic reference signals, and the phase rotation value of the phase rotation is correlated with information to be notified to the wireless receiving device.