Abstract: The transmitting station or the receiving station estimates channel information. All combinations of sub-array configurations in accordance with the number of transmitting antennas, the number of receiving antennas, and the number of transmission signals are derived. For the all combinations, precoding matrices which can be combined in-phase with the selected receiving antennas are derived. The channel capacity for the all combinations from the channel information and the precoding matrix is calculated. The optimal precoding matrix which maximizes channel capacity is selected. The transmission-side control information is determined from the optimal precoding matrix. The transmitting station switches the output destination of a single signal or a plurality of signals on the basis of the transmission-side control information and forms an arbitrary sub-array corresponding to each signal. The sub-array performs in-phase combining using phase control for the desired receiving antenna.

Abstract: A capacity estimation unit estimates a channel capacity related to wireless communication between a communication device and a relay device. A scheme determination unit determines a transmission scheme of the data from the communication device to the relay device to be a scheme in which transmission efficiency is lower and transmission quality is higher as the channel capacity is larger, or to be a scheme in which the transmission quality is lower and the transmission efficiency is higher as the channel capacity is smaller.

Abstract: An acquisition unit acquires environment information indicating an installation environment of a communication apparatus. A scheme specifying unit specifies a transmission scheme of data on the basis of relational data indicating a relationship between the environment information and the transmission scheme and the acquired environment information. A transmission unit transmits the data to a relay device on the basis of the specified transmission scheme.

Abstract: A second communication device transmits notification information related to a communication status between a transmission device and a first communication device to the transmission device. The transmission device determines a transmission method of data to the first communication device on the basis of the notification information received from the second communication device, and transmits the data to the first communication device by the determined transmission method.

Abstract: Each transmitting apparatus transmits the same radio signals a plurality of times. A communication apparatus includes a plurality of antennas, a signal storage unit, a reading unit, an equalization unit, and a demodulation unit. The plurality of antennas receives radio signals transmitted from a plurality of the transmitting apparatuses. The signal storage unit stores reception signals received by each of the plurality of antennas. The reading unit reads, from the signal storage unit, reception signals including radio signals transmitted from a demodulation processing target transmitting apparatus, the reception signals being received by each of the plurality of antennas at different times. The equalization unit equalizes the plurality of reception signals read by the reading unit. The demodulation unit demodulates the equalized reception signals.

Abstract: An acquisition unit acquires a plurality of signals received by a plurality of antennas included in a wireless communication device that moves in a predetermined orbit above a celestial body. A parameter determination unit determines a synthesis parameter of the plurality of signals according to the position of a transmission terminal provided on the celestial body, the orbit, and the reception time of the plurality of signals. A synthesis unit synthesizes a transmission signal of the transmission terminal according to the plurality of signals and the synthesis parameter.

Abstract: A processing liquid temperature control apparatus includes a block body with an integral structure made of a silicon carbide sintered body, the block body having a flow path through which a semiconductor processing liquid flows, and a temperature adjustment portion provided at the block body to adjust a temperature of the semiconductor processing liquid flowing through the flow path. Accordingly, it is possible to reduce the number of parts and achieve compactness and cost reduction. In addition, it is possible to enhance heat conduction between the processing liquid and the temperature adjustment portion, and improve heat exchange efficiency.

Abstract: A wireless communication system includes a transmission apparatus and a communication apparatus that moves. Further, the wireless communication system includes a statistics calculation unit, an information generation unit, and a notification unit. The statistics calculation unit acquires a transmission condition used for a first radio signal transmitted from the transmission apparatus in an area and normally received by a reception unit of the communication apparatus, and generates statistical information of the acquired transmission condition. The information generation unit extracts a transmission condition having a high probability that a radio signal is normally received on the basis of the statistical information, and generates transmission control information indicating the extracted transmission condition. The notification unit notifies the transmission apparatus in the area of the transmission control information.

Abstract: There is provided a wireless communication device in a wireless communication system including one or more communication devices installed on the ground and a moving wireless communication device, the wireless communication device including: an activation signal generation unit that generates an activation signal for activating the one or more communication devices; a distribution unit that distributes the activation signal generated by the activation signal generation unit; one or more frequency change application units that apply a frequency change to the activation signal distributed by the distribution unit; and a transmission unit that transmits an activation signal to which a frequency change is applied to the one or more frequency change application units.

Abstract: A wireless communication system includes a first communication apparatus that moves, a second communication apparatus that moves, and a reception apparatus. A first control unit of the first communication apparatus, when an own apparatus can communicate with any of the reception apparatuses, transmits transmission data acquired by the own apparatus from a first communication unit to the reception apparatus, and, when the own apparatus cannot communicate with any of the reception apparatuses, transmits the transmission data from a second communication unit to the second communication apparatus capable of communicating with the own apparatus. A second control unit of the second communication apparatus transmits the transmission data received by a third communication unit from the first communication apparatus from a fourth communication unit to a reception apparatus capable of communicating with the own apparatus.

Abstract: In a wireless communication system including a first communication device, one or more second communication devices disposed around the first communication device, and a relay device that moves, the second communication device includes a second reception unit that attempts to receive a radio wave in a predetermined band and measures reception strength, and a second transmission unit that transmits, to the first communication device, reception result information indicating a peripheral radio wave condition based on the reception strength measured by the second reception unit, and the first communication device includes a first reception unit that attempts to receive a radio wave in the predetermined band and measures reception strength, a determination unit that determines a band to be used for transmission of data to the relay device on a basis of a peripheral radio wave condition based on the reception strength measured by the first reception unit and the peripheral radio wave condition based on the receptio

Abstract: A state estimation system includes a thermal load detection unit that detects a thermal load of a device as an object, and an estimation unit that estimates a state of the device on the basis of the thermal load of the device detected by the thermal load detection unit.

Abstract: In a wireless communication system including a communication device and a plurality of relay devices that moves, the relay device includes: a signal reception unit that receives a signal transmitted from the communication device; a reception status information generation unit that generates reception status information indicating a reception status of the signal by the signal reception unit; a reception status information transmission unit that transmits the reception status information generated by the reception status information generation unit to another relay device; a reception status information reception unit that receives reception status information transmitted from another relay device; a calculation unit that calculates a communication parameter value suitable for retransmission of a signal from the communication device to the local device on a basis of the reception status information received by the reception status information reception unit; and a setting information transmission unit that tra

Abstract: An element-mounted board includes a heat-dissipating plate in which aluminum or magnesium-containing metal layers are formed on both front and back surfaces of a flat plate-shaped metal-silicon carbide complex including aluminum or magnesium, and an electronic element including a ceramic plate, which is mounted on one surface side of the heat-dissipating plate, in which a flatness of the other surface of the heat-dissipating plate is 600 ?m or less.

Abstract: A plate-shaped heat dissipation member includes a metal-silicon carbide composite containing aluminum or magnesium, in which at least one of two main surfaces of the heat dissipation member is curved to be convex in an outward direction of the heat dissipation member, and when a flatness of the one main surface defined by JIS B 0621 is represented by f1 and a flatness of the other main surface different from the one main surface defined by JIS B 0621 is represented by f2, f2 is less than f1 by 10 ?m or more.

Abstract: A plurality of control signals transmitted in individual frequency bands by a moving transmission station via a plurality of transmission antennas and a plurality of data signals transmitted in a common frequency band by the transmission station via the plurality of transmission antennas in synchronization with the control signals are received by each of a plurality of antennas disposed at different positions. Based on symbol timings of the control signals received by the antenna, a sampling rate error between the plurality of control signals transmitted by the plurality of transmission antennas, respectively, is compensated for. Based on the control signals subjected to the sampling rate error compensation, frame timings of the plurality of data signals transmitted by the transmission station via the plurality of transmission antennas are synchronized.

Abstract: A wireless communication apparatus includes an encoding unit, an interleaving processing unit, a modulation unit, and a transmission unit. The encoding unit divides a bit string to be transmitted to a communication destination apparatus which is a wireless communication apparatus at a communication destination in a predetermined period into a plurality of blocks and performs error correction coding for each of the plurality of blocks to generate encoded data.

Abstract: Provided is a heat dissipation member according to the present invention that includes a flat metal-silicon carbide composite containing aluminum, the heat dissipation member including: at least one through hole that penetrates the flat metal-silicon carbide composite in a plate thickness direction; a tapered portion where an inner diameter of the through hole gradually increases toward an outer side in a periphery of one or both end portions of the through hole; a metal portion containing aluminum that is formed on an inner surface of the through hole; and a screw hole that is formed in the metal portion.

Abstract: Provided is a heat dissipation member according to the present invention including a flat metal-silicon carbide composite containing aluminum, in which a thickness of the heat dissipation member is equal to or less than 4 mm, and the heat dissipation member is used as a heat dissipation member for automobile mount.

Abstract: A band sharing communication system in which there are an N-ary system and an N+1-ary system in descending order of priority of communication, the systems share frequency bands and allocation of a requested band of a terminal station of each system is performed, includes: occupied band setting means for setting an N-ary occupied band and an N+1-ary occupied band adjacent to the N-ary occupied band; band allocation means for allocating a vacant band of the N-ary occupied band with respect to a requested band of an N-ary terminal station and allocating a vacant band of the N+1-ary occupied band with respect to a requested band of an N+1-ary terminal station; and band transferring means for, when there is no vacant band in the N-ary occupied band with respect to the requested band of the N-ary terminal station, if a vacant band equivalent to the requested band is present in the N+1-ary occupied band such that the vacant band is adjacent to the N-ary occupied band, transferring the vacant band from the N+1-ary oc