Patent application number | Description | Published |
20090161603 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus is capable of improving communication efficiency by reducing the amount of control information transmitted. A channel quality information extraction section extracts CQI's from a received signal. An allocation control section allocates subcarriers every communication terminal apparatus and selects a modulation scheme in such a manner that required transmission rate is satisfied for each communication terminal apparatus based on required transmission rate information etc. and CQI's for communication terminal apparatus of each user. A required subcarrier number determining section decides the number of subcarriers allocated every communication terminal apparatus in such a manner as to satisfy the required transmission rate for each communication terminal apparatus based on required transmission rate information etc. of communication terminal apparatus of each user. A required subcarrier number information generating section generates information for the number of subcarriers allocated every communication terminal apparatus. A subcarrier allocation section allocates packet data to selected subcarriers. Modulating sections adaptively modulate packet data allocated to each subcarrier. | 06-25-2009 |
20090258600 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus is capable of increasing data capacity that can be transmitted and reducing power consumption by reducing the amount of control signal to be transmitted, and capable of increasing system capacity by reducing interference with respect to other wireless communication apparatuses. | 10-15-2009 |
20090270052 | APPARATUS AND METHOD FOR RADIO TRANSMISSION - A radio transmission apparatus performs communications with high transmission efficiency. In this apparatus, a modulator modulates data and outputs to a first spreader. A second modulator modulates data under a modulation scheme having a higher M-ary number than the first modulator and outputs the modulated data to a second spreader. The first spreader spreads the data and outputs the spread data to a frequency domain mapping section. The second spreader spreads the data and outputs the spread data to a time domain mapping section. A frequency domain mapping section maps chips with spread data on subcarriers in the frequency domain and outputs the data with chips mapped on subcarriers to an IFFT section. The time domain mapping section maps chips with spread data on subcarriers in the time domain and outputs the data with chips mapped on subcarriers to the IFFT section. | 10-29-2009 |
20100097998 | BASE STATION APPARATUS AND COMMUNICATION METHOD - In order to reduce interference between cells through hopping and use frequencies in a good propagation situation, a scheduler section | 04-22-2010 |
20120039363 | RADIO RECEPTION APPARATUS AND RADIO RECEPTION METHOD - A radio transmission apparatus performs communications with high transmission efficiency. In this apparatus, a modulator modulates data and outputs to a first spreader. A second modulator modulates data under a modulation scheme having a higher M-ary number than the first modulator and outputs the modulated data to a second spreader. The first spreader spreads the data and outputs the spread data to a frequency domain mapping section. The second spreader spreads the data and outputs the spread data to a time domain mapping section. A frequency domain mapping section maps chips with spread data on subcarriers in the frequency domain and outputs the data with chips mapped on subcarriers to an IFFT section. The time domain mapping section maps chips with spread data on subcarriers in the time domain and outputs the data with chips mapped on subcarriers to the IFFT section. | 02-16-2012 |
20120188966 | BASE STATION AND MOBILE STATION COMMUNICATING WITH OFDM SYSTEM USING A PLURALITY OF SUBCARRIERS AND COMMUNICATION METHOD WITH OFDM SYSTEM USING A PLURALITY OF SUBCARRIERS - A multicarrier communication apparatus that is capable of suppressing interference of feedback information with other channels and alleviating a reduction in an uplink capacity. In PL signal reception section of this apparatus, PL signal extraction section extracts pilot signals and reception quality measuring section measures reception quality such as an SIR. Here, since pilot signals are included in respective subcarriers, reception quality measuring section measures reception quality of subcarriers. FBSC determining section determines a feedback information subcarrier based on the reception quality of subcarriers. More specifically, FBSC determining section determines a subcarrier having the highest reception quality as a feedback information subcarrier. FBSC determining section outputs information about the feedback information subcarrier (FBSC information) to control CH transmission section and FB information reception section. | 07-26-2012 |
20120213301 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus is capable of improving communication efficiency by reducing the amount of control information transmitted. A channel quality information extraction section extracts CQI's from a received signal. An allocation control section allocates subcarriers for every communication terminal apparatus and selects a modulation scheme in such a manner that required transmission rate is satisfied for each communication terminal apparatus based on required transmission rate information, etc. and CQI's for communication terminal apparatus of each user. A required subcarrier number determining section decides the number of subcarriers allocated to every communication terminal apparatus so as to satisfy the required transmission rate for each communication terminal apparatus. A required subcarrier number information generating section generates information for the number of subcarriers allocated to every communication terminal apparatus. A subcarrier allocation section allocates packet data to selected subcarriers. Modulating sections adaptively modulate packet data allocated to each subcarrier. | 08-23-2012 |
20130022080 | INTEGRATED CIRCUIT FOR CONTROLLING A PROCESS - A radio transmission apparatus performs communications with high transmission efficiency. In this apparatus, a modulator modulates data and outputs to a first spreader. A second modulator modulates data under a modulation scheme having a higher M-ary number than the first modulator and outputs the modulated data to a second spreader. The first spreader spreads the data and outputs the spread data to a frequency domain mapping section. The second spreader spreads the data and outputs the spread data to a time domain mapping section. A frequency domain mapping section maps chips with spread data on subcarriers in the frequency domain and outputs the data with chips mapped on subcarriers to an IFFT section. The time domain mapping section maps chips with spread data on subcarriers in the time domain and outputs the data with chips mapped on subcarriers to the IFFT section. | 01-24-2013 |
Patent application number | Description | Published |
20080253416 | Laser unit having preparatory function for activating the unit and activation method for the unit - A laser unit having a preparatory function for activating the unit and an activation method for the unit, capable of stabilizing the temperature of each component of the laser unit in the preparation stage when the laser unit is activated in a low-temperature or high-temperature environment, and then effectively judging completion of the preparation. During a period of time Ta from T | 10-16-2008 |
20110243177 | GAS LASER DEVICE - A gas laser device including a blower circulating a laser gas along a gas passage; a pressure detection section detecting a gas pressure of the laser gas in the gas passage; a gas supply and exhaust section supplying the laser gas to the gas passage and exhausting the laser gas from the gas passage; an instruction section instructing a temporary stop of a laser oscillation by a laser oscillator; and a control section controlling the blower and the gas supply and exhaust section in response to an instruction from the instruction section. The control section, before the instruction section instructs the temporary stop, controls the blower to rotate at a predetermined rotation number and controls the gas supply and exhaust section so that the gas pressure detected by the pressure detection section is a first target gas pressure and, once the instruction section instructs the temporary stop, controls the blower so as to reduce the rotation number of the blower or stop the rotation of the blower and controls the gas supply and exhaust section so that the gas pressure detected by the pressure detection section is a second target gas pressure corresponding to the first target gas pressure during the rotation of the blower. | 10-06-2011 |
20130315274 | GAS LASER DEVICE - A gas laser device including a blower circulating a laser gas along a gas passage; a pressure detection section detecting a gas pressure of the laser gas in the gas passage; a gas supply and exhaust section supplying the laser gas to the gas passage and exhausting the laser gas from the gas passage; an instruction section instructing a temporary stop of a laser oscillation by a laser oscillator; and a control section controlling the blower and the gas supply and exhaust section in response to an instruction from the instruction section. The control section, once the instruction section instructs the temporary stop, controls the blower to reduce the rotation of the blower or stop the rotation of the blower and controls the gas supply and exhaust section so that the gas pressure detected is a second target gas pressure corresponding to a first target gas pressure during the rotation of the blower. | 11-28-2013 |