| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To constitute a frame so as to improve a communication rate without deteriorating communication quality in communication of an OFDM system. <P>SOLUTION: A radio base station 10 is disclosed which performs the communication of the OFDM system with at least one mobile station using as a transmission unit, a signal including a valid period for transmitting a data signal and a redundant period for transmitting redundant data based on the data signal transmitted during the valid period. The radio base station 10 measures an interference level of a signal transmitted by the mobile station and changes a length of the redundant period of a signal transmitted on a communication channel to be used for the communication with the mobile station in accordance with the measured interference level. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
