| 摘要 |
A base station realizing enhancement of the interpolation accuracy of the channel estimate between sub-frames. In a base station (100), a scrambling section (105) carries out scrambling such that a predetermined pilot signal sequence is multiplied by a scrambling sequence containing both a sequence unique to the base station (100) and different with cells and a sequence common to base stations for each chip and generates a pilot sequence containing both a pilot for unicast sub-frame and a pilot for multicast sub-frame, a multiplexing section (106) for time-multiplexing the pilot sequence, the unicast data symbol, and a multicast data symbol for each sub-frame, and an S/P section (107) converts the pilot sequences, the unicast data symbols, and the multicast data symbols sequential serially inputted from the multiplexing section (106) the numbers of which are equal to the number of subcarries included in one OFDM symbol into parallel ones and outputs them to an IFFT section (108).
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