Patent ID: 8654752

Claim:
A radio communication device for use in a radio communication system, which performs transmission on a sub-frame basis having a first slot and a second slot temporally continuously arranged, the radio communication device comprising: a pre-coding multiplication section that performs pre-coding to form a predetermined beam by multiplying a signal to be output to a plurality of antennas by a pre-coding weight, and uses cyclic delay diversity to shift a phase such that the phase in the pre-coding weight is cyclically changed on a frequency axis; a phase shift amount instruction section that instructs that a phase shift amount to be applied by the pre-coding multiplication section is changed by 2π within an allocated resource block of the radio communication device, and assigns the phase shift amount for the pre-coding multiplication section such that the phase shift amount differs by π between the first slot and the second slot in an allocated sub-frame of the radio communication device, wherein the first slot and the second slot are arranged continuously in time; and a transmitting section that transmits a transmission signal including the signal subjected to the pre-coding to a receiving device as the other communication party.