Patent application number | Description | Published |
20080253484 | METHOD AND APPARATUS FOR REFERENCE SIGNAL GENERATION IN WIRELESS COMMUNICATION SYSTEM - To provide a reference signal generation method and apparatus capable of obtaining many reference signal sequences having excellent properties. CAZAC sequences that satisfy the condition that the absolute value (|N−L|) of a difference between a sub-carrier number N in a resource block and a CAZAC sequence length L is not larger than a threshold value K are selected, and a sequence having a largest among greatest prime factors among the prime factors constituting the sequence length(s) is further selected from the initially selected sequences. Then, a reference signal sequence(s) is generated from a selected CAZAC sequence. | 10-16-2008 |
20090042512 | MOBILE COMMUNICATION SYSTEM, BASE STATION, AND INTER-CELL INTERFERENCE REDUCTION METHOD - Base stations ( | 02-12-2009 |
20090052427 | SINGLE CARRIER TRANSMISSION SYSTEM, COMMUNICATION DEVICE, AND SINGLE CARRIER TRANSMISSION METHOD USING FOR THEM | 02-26-2009 |
20090122886 | TRANSMITTING/RECEIVING SYSTEM, TRANSMITTING APPARATUS, AND PILOT SIGNAL MULTIPLEXING METHOD USED IN THEM - At a transmitting side ( | 05-14-2009 |
20090201950 | BAND LIMITING METHOD AND WIRELESS COMMUNICATION SYSTEM - A receiver estimates a channel quality. A transmitter amplifies a signal by a gain proportional to a difference between a required signal-to-noise power ratio and channel quality information, which is an estimation result of the channel quality, and transmits the signal so that the receiver can obtain the signal-to-noise power ratio. In this case, the receiver or the transmitter determines a roll-off rate of an adaptive filter based on the channel quality information. The transmitter uses the adaptive filter of the determined roll-off rate to filter and transmit the signal. | 08-13-2009 |
20100098189 | TRANSMITTER AND RECEIVER FOR A WIRELESS ACCESS SYSTEM, TRANSMISSION METHOD AND RECEPTION METHOD OF THE WIRELESS ACCESS SYSTEM, AND A PROGRAM FOR SAME - An arithmetic process of a quadratic formula that is contained in an exponent of a CAZAC sequence-defining expression is converted to an arithmetic process of a recursion formula to find the above-described exponent, the above-described exponent that was found is used to generate a CAZAC sequence, and the above-described CAZAC sequence that was generated is taken as the reference signal for transmitting and receiving or as a random access preamble signal. | 04-22-2010 |
20120170538 | WIRELESS COMMUNICATION SYSTEM, PILOT SEQUENCE ALLOCATION APPARATUS, PILOT SEQUENCE ALLOCATING METHOD USED FOR THE SYSTEM AND APPARATUS, AND MOBILE STATION USED IN THE METHOD - A mobile station in a wireless communication system including a base station, and a method for the mobile station includes a unit that sends a pilot signal to the base station. A sub-frame used for sending the pilot signal includes a first pilot block and a second pilot block. A first Zadoff-Chu sequence allocated to the first pilot block is different from a second Zadoff-Chu sequence allocated to the second pilot block. | 07-05-2012 |
20120287874 | FREQUENCY OFFSET ESTIMATION METHOD, COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND PROGRAM - A frequency offset estimation unit estimates a frequency offset by combining information on a maximum window having a maximum peak power obtained from a received PRACH (Physical Random Access Channel) signal and a sign of a phase of a correlation value between channel estimation values obtained from a received PUSCH (Physical Uplink Shared Channel) signal. | 11-15-2012 |
20120307766 | COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION, METHOD FOR MOBILE STATION, AND METHOD FOR COMMUNICATION SYSTEM - A mobile station in a communication system including a base station, the mobile station includes a unit for sending a signal that allocates a plurality of different Zadoff-Chu sequences to a frame to the base station. | 12-06-2012 |
20130024753 | DECODING DEVICE AND DECODING ORDER CONTROL METHOD - A decoding device that performs decoding of data transmitted from each of a plurality of users comprises an iterative decoding section that repeats decoding of the data until no error is detected in a result of decoding, an error detection section that performs error detection on the decoding result each time decoding is performed, and a decoding order control section that estimates with respect to each of the plurality of users a decoding completion time, which is a time period the time period required until no error is detected in the result of decoding of the data transmitted from the user, and that assigns priorities to the users in increasing order of the estimated decoding completion time. The iterative decoding section performs decoding of the data transmitted from the users for the users in descending order of the priorities. | 01-24-2013 |
20130272246 | COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION, METHOD FOR MOBILE STATION, AND METHOD FOR COMMUNICATION SYSTEM - A device and method in which a plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells. | 10-17-2013 |
20140003544 | SINGLE CARRIER TRANSMISSION SYSTEM, COMMUNICATION DEVICE, AND SINGLE CARRIER TRANSMISSION METHOD USING FOR THEM | 01-02-2014 |
20140136922 | RADIO TRANSMITTING/RECEIVING DEVICE, COMMUNICATION SYSTEM, AND CHANNEL CODING PROCESSING METHOD USED THEREBY - A radio transmitting/receiving device uses a channel interleaver with turbo codes serving as error-correcting codes to convert burst errors into random errors. The radio transmitting/receiving device, in Code Block Concatenation ( | 05-15-2014 |
20150222307 | RECEPTION QUALITY MEASURING APPARATUS AND RECEPTION QUALITY MEASURING METHOD - A reception quality measuring apparatus ( | 08-06-2015 |
20150327186 | MOBILE STATION, BASE STATION, METHODS FOR TRANSMITTING AND RECEIVING POWER HEADROOM REPORT, AND COMPUTER READBLE MEDIUM - A mobile station ( | 11-12-2015 |
Patent application number | Description | Published |
20090091207 | DC-Motor - In a DC-motor according to the present invention, contact areas of first brushes can be enlarged without enlarging the external diameter of a disk on which a commutator is provided; therefore, the wear resistance of the first brushes can be enhanced while maintaining a good control-response; and at the same time, the axial dimension can be shortened dramatically, so that the DC-motor can be downsized. | 04-09-2009 |
20150084444 | MOLD STATOR, ELECTRIC MOTOR, AND AIR-CONDITIONER OUTDOOR UNIT - A mold stator is configured to include a stator core and a mold resin that covers the stator core. A divided-core part includes a yoke part that is arranged coaxially with a rotor that is provided in the stator core, a teeth part that extends from the yoke part in a radially-inward direction, and a teeth distal-end part that is formed at a radially-inward end part of the teeth part. An outer-circumferential flat-surface part is formed on an outer circumferential surface of the yoke part and an outer-circumferential flat-surface part is formed at a position on an outer circumferential surface of the mold stator opposing the flat-surface part of the yoke part. | 03-26-2015 |
20150184871 | AIR CONDITIONER OUTDOOR UNIT - To provide an air conditioner outdoor unit including a casing having an air inlet on a side surface and an air outlet on an upper surface, a heat exchanger that covers the air inlet and is provided inside the casing, a fan that sucks in air from the air inlet and discharges air from the air outlet, and a fan motor provided on a lower side of the fan. The fan motor is set such that an outer diameter D | 07-02-2015 |
20150236558 | ELECTRIC MOTOR HAVING EMBEDDED PERMANENT MAGNETS - A rotor of an interior permanent magnet motor includes a rotor core having a plurality of magnet insertion holes, a shaft, a plurality of rare-earth magnets, and a pair of magnet fixing members. One surface of the magnet fixing member is provided with a plurality of pairs of tongue-like portions, and the tongue-like portions are inserted into the magnet insertion holes. On each of both sides in a rotary shaft direction, the rare-earth magnets have both end surfaces in a rotor circumferential direction sandwiched by a corresponding pair of tongue-like portions. An interval between the tongue-like portions includes, at a position separated from a base position, an interval that is smaller than the width of the rare-earth magnet in the rotor circumferential direction. | 08-20-2015 |
20150256038 | ELECTRIC MOTOR WITH EMBEDDED PERMANENT MAGNET, AND REFRIGERATING AIR CONDITIONING EQUIPMENT EQUIPPED WITH SAME - A permanent magnet embedded electric motor includes a slit and a flux barrier. A hole defining portion of a magnet insertion hole includes an extended portion. The extended portion projects toward an interpolar core portion in a rotor core in an area positioned further on an outer side of a circumferential direction with respect to a width-direction end surface of a permanent magnet. (Lb) is larger than (La), and (Lc) is smaller than (Ld), where the (La) represents a distance between the slit and the core outer peripheral surface; the (Lb) represents a distance between the slit and an outer peripheral-side surface of the permanent magnet; the (Lc) represents a shortest distance between the extended portion and the interpolar core portion; and the (Ld) represents a thickness of the permanent magnet. | 09-10-2015 |
20150263574 | ROTOR OF MOTOR - A rotor of a motor includes a rotor core; permanent magnet insertion holes that are formed in an outer circumferential portion of the rotor core along a circumferential direction and in each of which an air gap extending in an outer circumferential direction, is formed in both end portions in a state where a permanent magnet is inserted; and a permanent magnet inserted in each of the permanent magnet insertion holes, wherein a thin portion is formed between the air gap and an outer circumference of the rotor core, rounded corner portions are formed at two locations on an outer circumference side in the air gap, and a radius of curvature of any one of the corner portions is equal to or more than half a width of the air gap in a circumferential direction. | 09-17-2015 |
20150280500 | PERMANENT MAGNET EMBEDDED MOTOR, COMPRESSOR, AND REFRIGERATION AND AIR CONDITIONING DEVICE - A rotor core includes a plurality of first electromagnetic steel plates that are stacked in an axial direction and a plurality of second electromagnetic steel plates that are stacked in an axial direction at both ends of the electromagnetic steel plate group thereof. The first electromagnetic steel plates are provided therein with magnet insertion holes and first flux barriers. The second electromagnetic steel plates are provided therein with the magnet insertion holes, second flux barriers, and projections that regulate the positions of the magnets. The second electromagnetic steel plates are stacked at at least one of the axial direction ends of the electromagnetic steel plate group including the plurality of first electromagnetic steel plates and are provided at a position overhanging the axial direction end of a stator core. | 10-01-2015 |
20150364959 | AN INTERIOR PERMANENT MAGNET MOTOR - An interior permanent magnet motor includes: a rotor; a stator; and a plurality of permanent magnets respectively inserted into a plurality of magnet insertion holes formed in a rotor core, the rotor core being formed by laminating a plurality of magnetic steel sheets, the magnetic steel sheets including first magnetic steel sheets each not having a magnet stopper in the magnet insertion hole, and second magnetic steel sheets each having magnet stoppers at both end portions of the magnet insertion hole, the rotor core including a laminate of the magnetic steel sheets in a lamination mode in which, when H | 12-17-2015 |