Abstract: An antenna device capable of transmitting power that allows a power receiving device to efficiently receive power even at a short distance is provided.

Abstract: To provide a power supply system, a power device, and a power method capable of wireless power supply with a simple configuration.

Abstract: An antenna device and a feed device that allows a beam direction to be adjusted with a simple calculation are provided. An antenna device includes an array antenna with multiple antenna elements that are arranged in two dimensions, multiple antenna elements being arranged along each of a first axis and a second axis. The antenna device includes at least one phase adjusting unit configured to adjust, with respect to a first axial direction, a phase of power supplied to each of the multiple antenna elements. The antenna device includes an image capturing unit configured to capture an image through a fisheye lens. The antenna device includes a position converting unit configured to convert a first position, which is used in the image capturing unit, of a marker included in the image captured by the image capturing unit, into a second position of polar coordinates on a first plane that includes the first axis and the second axis.

Abstract: An orientation control apparatus and a method thereof are provided. The orientation control apparatus for controlling orientation of a phased array antenna includes the phased array antenna and an orientation controller. In the phased array antenna, a plurality of antenna elements are disposed on a plane. The phased array antenna receives a signal transmitted from at least one transmitter. The orientation controller controls orientation of the phased array antenna based on a channel estimated result of each sub array where the plurality of antenna elements have been grouped in the phased array antenna.

Abstract: Disclosed are an apparatus and a method of processing a signal, and a recording medium. The apparatus for processing a signal includes: an estimating unit configured to estimate a first Signal-to-Interference plus Noise power Ratio (SINR) of a reception signal based on transmission path information based on a result of an estimation of a plurality of transmission paths and noise power notified from a wireless reception device; a signal processing unit configured to generate a first modulation symbol by modulating the information bit obtained based on a first modulation order and a first coding rate determined based on the first SINR on a basis of the first modulation order, and a perturbation addition processing unit configured to search for a perturbation vector based on the first modulation symbol generated for each of the plurality of transmission paths, and add the perturbation vector to the first modulation symbol.

Abstract: Provided are a rolled Mg alloy material whose mechanical properties are locally different in a width direction, a Mg alloy structural member produced by plastically working the rolled Mg alloy material, and a method for producing the rolled Mg alloy material. The method for producing a rolled Mg alloy material includes rolling a Mg alloy material with a reduction roll. The reduction roll has three or more regions in the width direction. The temperature is controlled in each of the regions so that a difference between a maximum temperature and a minimum temperature exceeds 10° C. in the width direction of a surface of the reduction roll. The rolled state in the width direction is varied by varying a difference in temperature over the width direction of the reduction roll. As a result, it is possible to produce a rolled Mg alloy material whose mechanical properties are locally different in the width direction.

Abstract: An orientation control apparatus and a method thereof are provided. The orientation control apparatus for controlling orientation of a phased array antenna includes the phased array antenna and an orientation controller. In the phased array antenna, a plurality of antenna elements are disposed on a plane. The phased array antenna receives a signal transmitted from at least one transmitter. The orientation controller controls orientation of the phased array antenna based on a channel estimated result of each sub array where the plurality of antenna elements have been grouped in the phased array antenna.

Abstract: Disclosed are an apparatus and a method of processing a signal, and a recording medium. The apparatus for processing a signal includes: an estimating unit configured to estimate a first Signal-to-Interference plus Noise power Ratio (SINR) of a reception signal based on transmission path information based on a result of an estimation of a plurality of transmission paths and noise power notified from a wireless reception device; a signal processing unit configured to generate a first modulation symbol by modulating the information bit obtained based on a first modulation order and a first coding rate determined based on the first SINR on a basis of the first modulation order, and a perturbation addition processing unit configured to search for a perturbation vector based on the first modulation symbol generated for each of the plurality of transmission paths, and add the perturbation vector to the first modulation symbol.

Abstract: The communication device includes: a phased array antenna having a plurality of antenna elements arranged on a plane for receiving signals transmitted from one or more transmitting devices; a signal converter for combining signals received through antenna elements for each sub-array and converting the combined signal for each sub-array into a baseband signal, the each sub-array being grouped from the plurality of antenna elements; a signal processor for decoding playback data based on respective baseband signals for sub-arrays in each resource block and detecting an error of the decoded playback data; and an orientation controller for controlling orientation of the phased array antenna based on the base band signals for the sub-arrays and a signal of a resource block with the playback data having no error.

Abstract: The communication device includes: a phased array antenna having a plurality of antenna elements arranged on a plane for receiving signals transmitted from one or more transmitting devices; a signal converter for combining signals received through antenna elements for each sub-array and converting the combined signal for each sub-array into a baseband signal, the each sub-array being grouped from the plurality of antenna elements; a signal processor for decoding playback data based on respective baseband signals for sub-arrays in each resource block and detecting an error of the decoded playback data; and an orientation controller for controlling orientation of the phased array antenna based on the base band signals for the sub-arrays and a signal of a resource block with the playback data having no error.

Abstract: A communication apparatus, method, and system are provided. The communication apparatus receives through a transmission path a combined signal in which modulated signals are combined. The communication apparatus converts a channel matrix indicating transmission characteristics of the transmission path using a basis conversion matrix which converts column vectors forming the channel matrix to cross at right angles, estimates a transmission symbol using the converted channel matrix, and calculates a likelihood of each bit of the estimated transmission symbol being a “1” and a “0”, respectively, using an inverse matrix of the basis conversion matrix. The method includes converting a channel matrix; estimating a transmission symbol; and calculating a likelihood of each bit being a “1” and a “0”, respectively, of the estimated transmission symbol using a basis conversion matrix. The system includes a transmitter and receiver for transmitting and receiving, respectively, a combined signal according to the method.

Abstract: A restart method that performs restart in a label transfer network, the restart method includes: selecting, by a restart node, one or more adjacent nodes based on a processing capacity of the restart node, setting a selected adjacent node as a restart group and notifying the selected adjacent node of restart; restoring, based on a label value of a path notified by the selected adjacent node, an entry corresponding to the path using a label table that associates the path with the label; and repeating a notification of restart and a restoration of an entry to restore the label table.

Abstract: A receiving apparatus includes a combining and quantizing unit that combines channel vectors corresponding to a combination of a plurality of antennas in order to generate a combination channel vector and selects a predetermined quantization vector according to the generated combination channel vector, an error detecting unit that detects whether there is an error in received signals, and an antenna switchover unit that switches over the combination of the antennas according to a result of the error detection, in which the combining and quantizing unit feeds an index of the selected predetermined quantization vector back to a transmitting apparatus. In this way, diversity effect can be obtained by means of repeat control while reducing the amount of feedback information.

Abstract: Provided are a rolled Mg alloy material which has a wide width and whose mechanical properties are uniform in a width direction, a Mg alloy structural member produced by plastically working the rolled Mg alloy material, and a method for producing the rolled Mg alloy material. The method for producing a rolled Mg alloy material includes rolling a Mg alloy material with a reduction roll. The Mg alloy material has a width of 1,000 mm or more, and the reduction roll has three or more regions in the width direction. The temperature is controlled in each of the regions so that a difference between a maximum temperature and a minimum temperature is 10° C. or less in the width direction of a surface of the reduction roll. The variation in the rolled state in the width direction can be reduced by reducing a difference in temperature over the width direction of the reduction roll.

Abstract: Provided are a rolled Mg alloy material whose mechanical properties are locally different in a width direction, a Mg alloy structural member produced by plastically working the rolled Mg alloy material, and a method for producing the rolled Mg alloy material. The method for producing a rolled Mg alloy material includes rolling a Mg alloy material with a reduction roll. The reduction roll has three or more regions in the width direction. The temperature is controlled in each of the regions so that a difference between a maximum temperature and a minimum temperature exceeds 10° C. in the width direction of a surface of the reduction roll. The rolled state in the width direction is varied by varying a difference in temperature over the width direction of the reduction roll. As a result, it is possible to produce a rolled Mg alloy material whose mechanical properties are locally different in the width direction.

Abstract: Disclosed is a QR decomposition device supporting interference whitening. The QR decomposition device supporting interference whitening may calculate a whitening matrix based on an interference channel matrix. The QR decomposition device supporting the interference whitening may simultaneously support interference whitening and detection of a transmission symbol vector through QR decomposition. A vector manufactured during the whitening and a result of the QR decomposition may be used for detecting the transmission symbol vector.

Abstract: A restart method that performs restart in a label transfer network, the restart method includes: selecting, by a restart node, one or more adjacent nodes based on a processing capacity of the restart node, setting a selected adjacent node as a restart group and notifying the selected adjacent node of restart; restoring, based on a label value of a path notified by the selected adjacent node, an entry corresponding to the path using a label table that associates the path with the label; and repeating a notification of restart and a restoration of an entry to restore the label table.

Abstract: A multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) transceiving system is provided, in which an MIMO-OFDM receiver feeds back ordering information, such as the order of power intensities of reception signals of a plurality of reception antennas, to an MIMO-OFDM transmitter. The MIMO-OFDM transmitter arranges subcarriers, to which data symbols have been allocated, so that the subcarriers respectively correspond to a plurality of transmission antennas, according to the fed-back information. Thus, a specific substream can be transmitted via a transmission antenna having the greatest channel gain. Consequently, the probability of properly recovering the specific substream is greatly increased.

Abstract: A wireless transmitting method includes calculating a beamforming channel matrix which is a channel matrix generated at a time when a transmitting apparatus applies a beamforming matrix to a data signal and transmits the data signal to receiving apparatuses, selecting a parameter to be used while transmitting the data signal based on the beamforming channel matrix and noise information fed back from the receiving apparatuses, and transmitting the data signal by using the selected parameter.

Abstract: A transmitting apparatus includes a subset matrix setting unit to set a subset matrix corresponding to a channel matrix with respect to each of a plurality of antennas of at least one of a plurality of user terminals, using channel matrices fed back from the plurality of user terminals; a beamforming matrix calculator to perform a predetermined operation using the set subset matrix so as to calculate a beamforming matrix composed of weight vectors respectively corresponding to the plurality of antennas of each of the plurality of user terminals; a beamforming processor to perform a beamforming process on data to be transmitted according to the calculated beamforming matrix so as to generate a transmission signal; and antennas to transmit the transmission signal to the plurality of user terminals. The transmitting apparatus obtains a diversity effect while removing interference between user terminals with a small quantity of computations.