Abstract: A wireless device capable of enabling improvement in reliability of communication, enlargement of cell regions, improvement in PER and improvement in system performance is provided. The wireless device according to an embodiment is a wireless device which transmits information for a counterpart wireless device, and includes a signal processing unit which generates a symbol sequence; a transmission vector calculating unit which converts the symbol sequence into a plurality of transmission symbol sequences, and controls phases of the transmission symbol sequences to be a same phase or an opposite phase based on a channel estimation to the counterpart wireless device; and a plurality of antennas each of which transmits the plurality of transmission symbol sequences.

Abstract: A wireless device capable of enabling improvement in reliability of communication, enlargement of cell regions, improvement in PER and improvement in system performance is provided. The wireless device according to an embodiment is a wireless device which transmits information for a counterpart wireless device, and includes a signal processing unit which generates a symbol sequence; a transmission vector calculating unit which converts the symbol sequence into a plurality of transmission symbol sequences, and controls phases of the transmission symbol sequences to be a same phase or an opposite phase based on a channel estimation to the counterpart wireless device; and a plurality of antennas each of which transmits the plurality of transmission symbol sequences.

Abstract: One wireless communication network 3 determines an interference degree with the corresponding other wireless communication network 3 for each channel by accessing a CMDB 2 storing positional information, channel information, and respective coexistence methods of other wireless communication networks 3, selects other wireless communication network 3 to coexist, a coexisting channel, and a coexisting method thereof based on the interference degree for each determined channel, and reflects the selected network, channel, and coexistence method to the CMDB 2, and transmits a signal for requesting coexistence with respect to selected wireless communication network, to the CMDB 2, and the selected wireless communication network 3 performs a control for coexistence in the communication space between one wireless communication network and the selected wireless communication network based on the channel reflected to the CMDB 2 and the coexisting method thereof.

Abstract: Disclosed is a wireless communication system and the like that can avoid interference even if a plurality of networks coexist. The wireless communication system includes a primary user, cluster head equipment, and a secondary user. The cluster head equipment is for providing a local area network to a cluster region containing the abovementioned primary user. Also, the cluster head equipment contains: an acquisition means that acquires one or both—of information regarding the primary user and information regarding a primary signal—and the like; and a transmission means that transmits information to the secondary user. Then, using this wireless communication system, the secondary user performs cognitive wireless communication or the like on the basis of the information received from the transmission means of the cluster head equipment.

Abstract: A wireless device and a communication method, which enable a position of the wireless device to be known and enable a frequency which does not interfere with that of another wireless station to be selected, are provided.

Abstract: A wireless device and a communication method, which enable a position of the wireless device to be known and enable a frequency which does not interfere with that of another wireless station to be selected, are provided.

Abstract: Disclosed is a wireless communication system and the like that can avoid interference even if a plurality of networks coexist. The wireless communication system includes a primary user, cluster head equipment, and a secondary user. The cluster head equipment is for providing a local area network to a cluster region containing the abovementioned primary user. Also, the cluster head equipment contains: an acquisition means that acquires one or both—of information regarding the primary user and information regarding a primary signal—and the like; and a transmission means that transmits information to the secondary user. Then, using this wireless communication system, the secondary user performs cognitive wireless communication or the like on the basis of the information received from the transmission means of the cluster head equipment.

Abstract: One wireless communication network 3 determines an interference degree with the corresponding other wireless communication network 3 for each channel by accessing a CMDB 2 storing positional information, channel information, and respective coexistence methods of other wireless communication networks 3, selects other wireless communication network 3 to coexist, a coexisting channel, and a coexisting method thereof based on the interference degree for each determined channel, and reflects the selected network, channel, and coexistence method to the CMDB 2, and transmits a signal for requesting coexistence with respect to selected wireless communication network, to the CMDB 2, and the selected wireless communication network 3 performs a control for coexistence in the communication space between one wireless communication network and the selected wireless communication network based on the channel reflected to the CMDB 2 and the coexisting method thereof.