Radio apparatus, and method and program for controlling spatial path
View Patent ↗A PDMA terminal establishes communication by forming a plurality of spatial paths to another single radio apparatus. A plurality of antennas constituting an array antenna are divided into a plurality of subarrays corresponding to the plurality of spatial paths respectively. An adaptive array processing unit can perform an adaptive array processing for each of the plurality of subarrays. A memory stores in advance information on the number of antennas associated with the number of spatial paths that can be formed by the array antenna. A control unit controls a processing to transmit possible multiplicity information to another radio apparatus at a prescribed timing.
1. A radio apparatus capable of communicating with another radio apparatus by forming a plurality of spatial paths therebetween, the radio apparatus comprising:
an adaptive array unit capable of performing adaptive array processing on signals corresponding to a plurality of antennas, respectively;
a storage unit which stores beforehand a value indicating possible multiplicity associated with the number of spatial paths formable by said adaptive array unit; and
a control unit which controls a processing of transmitting the value indicating possible multiplicity to the another radio apparatus at a predetermined timing.
2. A radio apparatus according to claim 1 , wherein said control unit controls the processing of transmitting the value indicating possible multiplicity to the another radio apparatus in such a manner that the predetermined timing comes before a communication.
3. A radio apparatus according to claim 1 , wherein said storage unit stores beforehand the number of spatial paths capable of attaining normal reception, as the value indicating possible multiplicity.
4. A radio apparatus capable of communicating with another radio apparatus by forming a plurality of spatial paths therebetween, the radio apparatus comprising:
a plurality of antennas constituting an array antenna;
an adaptive array unit capable of performing adaptive array processing on signals corresponding to the plurality of antennas, respectively;
a storage unit which stores beforehand a value indicating possible multiplicity associated with the number of spatial paths formable by said adaptive array unit; and
a control unit which controls a processing of transmitting the value indicating possible multiplicity to the another radio apparatus at a predetermined timing.
5. A radio apparatus according to claim 4 , wherein said control unit controls the processing of transmitting the value indicating possible multiplicity to the another radio apparatus in such a manner that the predetermined timing comes before a communication.
6. A radio apparatus according to claim 4 , wherein said storage unit stores beforehand the number of spatial paths capable of attaining normal reception, as the value indicating possible multiplicity.