| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent deterioration in receiving characteristics at the time of transmitting known signals for use in channel estimation. <P>SOLUTION: A control unit 30, in cooperation with an IF unit 26, a modulation/demodulation unit 24 and a baseband processing unit 22, generates a packet signal composed of a plurality of streams. While using as a reference a known signal assigned to one of the plurality of streams and performing a cyclic timing shift in the known signal on a known signal assigned to the other stream, the control unit 30 performs a timing shift also on an extensional known signal assigned to a stream where no data are assigned. The amounts of timing shift are given degrees of priority beforehand and for the stream where data signals are assigned, the control unit 30 uses the amounts of timing shift in descending degree of priority. For the stream where no data signal is assigned, the control unit also uses the amounts of timing shift also in descending degree of priority. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
