Abstract: An interference suppression wireless communication device to be used in an interference suppression wireless communication system, includes: a variance acquirer configured to acquire a variance of channel estimation errors associated with a channel for a transmission signal of the interference suppression wireless communication device, a variance of channel estimation errors associated with a channel for an interference signal, and a variance of noise included in the transmission signal when the transmission signal is received; and a coefficient calculator configured to calculate, based on the variances acquired by the variance acquirer, a coefficient by which the interference signal to be subtracted from the transmission signal is multiplied.

Abstract: To perform scheduling for improving throughput, while suppressing control information amounts notified from communication terminal apparatuses.

Abstract: A modulation parameter selecting method in a system including, as a scheduler portion, a temporal coding rate determining portion that determines a coding rate temporarily, a temporal modulation rate determining portion for selecting a modulation method that satisfies required quality and has a maximum transmission rate in each channel, under the temporarily determined coding rate, and a transmission rate computing portion that calculates a transmission rate from the coding rate determined at the temporal coding rate determining portion and the modulation method in each of the channels selected at the temporal modulation method determining portion, in which processing from the temporal coding rate determining portion to the transmission rate computing portion is performed repeatedly with respect to selectable coding rates and a coding rate with a maximum transmission rate and a modulation method in each of the channels are determined.

Abstract: To determine a length of a guard interval based on performance provided in a communication terminal apparatus. A communication control apparatus 100 is a communication control apparatus that adds a guard interval to transmit a symbol to a communication terminal apparatus, and is provided with a terminal information receiving section 120 that receives delayed version tolerant performance information indicating performance of a communication terminal apparatus 200 to support delayed versions from the communication terminal apparatus, a guard interval length determining section (GI length determining section) 140 that determines a length of the guard interval based on the delayed version tolerant performance information, and a data symbol transmitting section 150 that transmits the symbol with the guard interval of the determined length added thereto to the communication terminal apparatus 200.

Abstract: [Object] To prevent communication performance capabilities from deteriorating even in the cases that the estimation error of the propagation path is significant, and that the variation speed of the propagation path characteristics is fast.

Abstract: An information processing unit is provided which positively stabilizes a user's feeling and physical condition by deciding the user's feeling and physical condition based on the user's body temperature change and the like. Depending on the user's hand temperature, a CPU (110) automatically selects an aromatic for stabilizing the user's feeling and physical condition change, and directs an aromatic sprayer (50) to spray the aromatic, or directs a display part (40) to display a countermeasure message for maintaining the physical condition. This positively stabilizes the user's feeling and physical condition.

Abstract: Reception quality measurement results of respective channels which have been outputted from a reception quality measuring section 308 are inputted to a selected channel determining section 341 and a channel quality information generating section 342. Moreover, the number of selected channels M which has been previously defined or the number of selected channels M which has been outputted from a control information obtaining section 314 is inputted to the selected channel determining section 341 and a channel identification information generating section 343. The selected channel determining section 341 selects M channels in order of goodness of the reception quality measurement result, as the selected channels, based on the reception quality measurement results of the respective channels, and outputs a selection result.

Abstract: An input device for zooming and shutter releasing includes a shutter release button; a pressing protrusion; a tact switch located on a substrate and configured to be pressed when the shutter release button is pressed downward; a rotary member rotatably supported at the periphery of the shutter release button; a magnet configured to be rotated in association with rotation of the rotary member, the magnet having a through hole at the center thereof, the pressing protrusion supported to extend through the through hole; and a magnetic sensor located at a position to face the through hole in the height direction and configured to detect a rotational magnetic field that is generated by the magnet because of the rotation of the rotary member, the tact switch and the magnetic sensor arranged side by side on the substrate.

Abstract: A relay apparatus compresses an information amount of channel quality information notified from a plurality of terminal apparatuses to notify a control station apparatus, and thereby improves spectral efficiency. The relay apparatus 400, which is applied to a communication system in which a control station apparatus and a terminal apparatus perform wireless communications using a plurality of sub-channels and relays the communications between the control station apparatus and the terminal apparatus, has a receiving section 402 that receives channel quality information indicative of channel quality of sub-channels from the terminal apparatus, a compressing section 405 that compresses an information amount of the received channel quality information and that generates notification information to notify the control station apparatus, and a transmitting section 406 that transmits the generated notification information to the control station apparatus.

Abstract: Disclosed is a position detecting device provided with a magnetoresistive element that can accurately detect a position using a magnet and a detector that moves opposite to the magnet. A front surface of a magnet having a circular shape is magnetized to the N-pole, and a rear surface thereof is magnetized to the S-pole. A detector moves in the X-Y plane at a position that is spaced from the front surface of the magnet. The detector is provided with an X direction detecting element and a Y direction detecting element. The X direction detecting element and the Y direction detecting element are magnetoresistive elements. The front surface of the magnet is tapered such that the center thereof protrudes.

Abstract: Provided is a communication system that can allocate resources on an uplink for a CQI report, and can reduce the overhead of the CQI relay transmission from a relay station apparatus to a base station apparatus. To each mobile station apparatus (501, 502) that transmits CQI directly to a base station apparatus (500), resource blocks on a base station apparatus uplink to be used for the transmission of each CQI to the base station apparatus are allocated. To each mobile station apparatus (511 to 513, 521 to 524) that transmits CQI to the base station apparatus via each relay station apparatus (510, 520), resource blocks on a relay station apparatus uplink to be used for the transmission of each CQI to the relay station apparatus are allocated.

Abstract: An object of the present invention is to improve the throughput and reduce the circuit size and power consumption for transmission. A wireless communication device that performs wireless communication in a multi-carrier transmission system using a frame composed of a plurality of sub-frames, which includes: an extraction part (8) extracting a modulation parameter from a modulation information sub-frame for constituting a received frame and notifying a receiving side of the modulation parameter of each sub-carrier; a storage part (9) storing the extracted modulation parameter; and a modulation control part (10) performing at least one of coding of transmission data and modulation of each sub-carrier using a stored modulation parameter when transmitting a frame to a transmission source of a frame, and which transmits a frame containing no modulation information sub-frame to the transmission source of the frame.

Abstract: An object of the present invention is to improve the throughput and reduce the circuit size and power consumption for transmission. A wireless communication device that performs wireless communication in a multi-carrier transmission system using a frame composed of a plurality of sub-frames, which includes: an extraction part (8) extracting a modulation parameter from a modulation information sub-frame for constituting a received frame and notifying a receiving side of the modulation parameter of each sub-carrier; a storage part (9) storing the extracted modulation parameter; and a modulation control part (10) performing at least one of coding of transmission data and modulation of each sub-carrier using a stored modulation parameter when transmitting a frame to a transmission source of a frame, and which transmits a frame containing no modulation information sub-frame to the transmission source of the frame.

Abstract: Provided is a communication system that can allocate resources on an uplink for a CQI report, and can reduce the overhead of the CQI relay transmission from a relay station apparatus to a base station apparatus. To each mobile station apparatus (501, 502) that transmits CQI directly to a base station apparatus (500), resource blocks on a base station apparatus uplink to be used for the transmission of each CQI to the base station apparatus are allocated. Resource blocks on the base station apparatus uplink to be used for each relay station to relay-transmit to the base station apparatus CQI received from the mobile station apparatuses are allocated on the basis of the allocation result of resource blocks on a relay station apparatus uplink for each relay station apparatus (510, 520).

Abstract: To efficiently perform adaptive modulation and adaptive scheduling in a communication control apparatus, while suppressing the total notified amount of reception quality information, provided is a communication terminal apparatus 300 which is applied to a multicarrier communication scheme in which the apparatus receives a signal on a channel allocated by a communicating party among a plurality of channels each comprised of at least one subcarrier, measures reception quality of the received signal, and notifies the communicating party of reception quality information, and has a reception quality measuring section 308 that measures reception quality of each subcarrier, and a reception quality information generating section 309 which determines an allocation request degree of each channel with respect to the communicating party, selects an information amount to represent reception quality information for each channel based on the allocation request degree, and based on the measured reception quality, generates t

Abstract: A modulation parameter selecting method and the like is realized, that can realize a high transmission rate efficiently, in a system including, as a scheduler portion, a temporal coding rate determining portion that determines a coding rate temporarily, a temporal modulation rate determining portion for selecting a modulation method that satisfies required quality and has a maximum transmission rate in each channel, under the temporarily determined coding rate, and a transmission rate computing portion that calculates a transmission rate from the coding rate determined at the temporal coding rate determining portion and the modulation method in each of the channels selected at the temporal modulation method determining portion, in which processing from the temporal coding rate determining portion to the transmission rate computing portion is performed repeatedly with respect to selectable coding rates and a coding rate with a maximum transmission rate and a modulation method in each of the channels are determ

Abstract: To perform scheduling for improving throughput, while suppressing control information amounts notified from communication terminal apparatuses.

Abstract: A communications system of the present invention is an OFDMA system (100) including a base station (10) and mobile stations (20), the base station (10) communicating wirelessly with the mobile stations (20) over a plurality of channels. Each mobile station (20) includes: a reception quality measuring section (19) for measuring reception quality; and a reception quality information determining section (12) for generating reception quality information only for each subgroup that belongs to the group(s) allocated to that mobile station (20) to report, (i) by 2-step grouping scheme information by which the channels are divided into subgroups, the subgroups are divided into groups, and the groups are allocated to the mobile stations (20) and (ii) according to the reception quality measured by the reception quality measuring section (19). The base station (10) schedules wireless communications over the channels according to the reported reception quality information.

Abstract: A base station device performs communication with terminal devices, and includes a load information acquisition section which acquires load information which shows a load on the base station device, a reporting method selection section which selects a reporting method for the terminal devices to report reception state information to the base station device based on load information acquired by the load information acquisition section, and a reporting section which reports the reporting method selected by the reporting method selection section to the terminal devices.

Abstract: An input device for zooming and shutter releasing includes a shutter release button; a pressing protrusion; a tact switch located on a substrate and configured to be pressed when the shutter release button is pressed downward; a rotary member rotatably supported at the periphery of the shutter release button; a magnet configured to be rotated in association with rotation of the rotary member, the magnet having a through hole at the center thereof, the pressing protrusion supported to extend through the through hole; and a magnetic sensor located at a position to face the through hole in the height direction and configured to detect a rotational magnetic field that is generated by the magnet because of the rotation of the rotary member, the tact switch and the magnetic sensor arranged side by side on the substrate.