| 摘要 |
Provided is a radio communication device capable of reducing the number of pilots while maintaining a channel estimation accuracy. The radio communication device includes: a unicast pilot generation unit (105) which generates a unicast pilot sequence and outputs it to an arrangement unit (106); and an arrangement unit (106) arranges unicast data, multicast data, a unicast pilot sequence, and a multicast pilot sequence at a position on the two-dimensional plane formed by a frequency axis and a time axis for output to an IFFT (Inverse Fast Fourier Transform) unit (107). Here, the arrangement unit (106) does not arrange pilots of the multicast pilot sequence at a time when the single frequency is different from the position where identical pilots are arranged between sectors among the respective pilots of the unicast pilot sequence in one sub frame.
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