| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio communications system obtaining a transmission diversity gain by maximally using the same channel structure as that of LTE, considering compatibility with the LTE. <P>SOLUTION: A radio communications system comprises: a base station device transmitting a transport block and control information containing downlink allocation information showing a scheduling result of the transport block; and a mobile station device receiving the control information, obtaining a plurality of spread codes and uplink physical resource blocks based on downlink control channel elements, code-spreading a pilot signal used to compensate a propagation path by the base station device by using each of the spread codes, and performing transmission using the plurality of uplink physical resource blocks by a plurality of transmission antennas. In the radio communications system, the spread codes and uplink physical resource blocks are calculated by using a value of the minimum number and a value being one larger than the value of the minimum number out of the numbers of the control channel elements to which the control information are allocated. <P>COPYRIGHT: (C)2012,JPO&INPIT |
