| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a simply configured broadband radio communication system having a service area comparable to an existing radio system. <P>SOLUTION: Radio communication apparatuses A and B use a plurality of antennas A<SB>1</SB>to A<SB>M</SB>, and B<SB>1</SB>to B<SB>N</SB>to perform radio communication by an MIMO technology. The radio apparatuses A and B decide optimum diversity combining information for optimizing a diversity reception state through bidirectional training signal transmission. The decision is made on the basis of reception level information, baseband reception IQ information, correlation information of a diversity combining received signal and a predetermined information sequence or the like which are obtained when the diversity combining information to each antenna is sequentially changed. The optimum diversity combining information is decided by receiving training frames or symbols any number of times indicated by (the number of antennas+1). The radio communication apparatuses A and B transmit and receive data by using the diversity combining information. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
