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Fukumasa
Hidenobu Fukumasa, Osaka JP
| Patent application number | Description | Published |
|---|---|---|
| 20090323515 | OFDM TRANSMITTTER AND OFDM RECEIVER - In an environment with large transmission delays, use of an OFDM transmitter which includes: a pilot/data allocator for allocating pilot/data symbols on OFDM symbols and an OFDM receiver which includes: an antenna for receiving the OFDM signals sent out from the antenna of this OFDM transmitter; a ratio unit for frequency transforming the OFDM signals received as RF signals to baseband signals; a frequency offset estimate for estimating an offset value; and a frequency offset corrector for performing frequency compensation by the amount of the frequency offset, improves data transmission efficiency while reducing interference of data between sub-carriers to prevent degradation of reception characteristics by performing appropriate frequency offset correction. | 12-31-2009 |
| 20110003551 | TRANSMITTER, RECEIVER, TRANSMISSION METHOD, AND RECEPTION METHOD - A transmitter which communicates with a receiver. The transmitter includes a null subcarrier allocation unit which allocates a null subcarrier based on a priority and a signal. The priority is for allocating a null subcarrier to each subcarrier. The priority is a ranking predetermined with the receiver. The signal is allocated to each subcarrier. The transmitter includes a transmission unit which transmits the signal using the subcarrier allocated by the null subcarrier allocation unit as the null subcarrier to the receiver. | 01-06-2011 |
Hidenobu Fukumasa, Chiba JP
| Patent application number | Description | Published |
|---|---|---|
| 20100020737 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS AND MOBILE STATION DEVICE - To provide a mobile communication system, base station apparatus and mobile station device for use in a data communication service such as MBMS in which a plurality of base station apparatuses transmit identical information toward a plurality of mobile station devices, to enable data transmission of high reliability by making use of a MIMO signal processing technology in an OFDM scheme. A plurality of base station apparatuses | 01-28-2010 |
| 20100222063 | CELLULAR MOBILE COMMUNICATION SYSTEM, BASE STATION TRANSMISSION DEVICE AND MOBILE STATION RECEPTION DEVICE IN CELLULAR MOBILE COMMUNICATION SYSTEM, AND BASE STATION SELECTION CONTROL METHOD IN CELLULAR MOBILE COMMUNICATION SYSTEM - A cellular mobile communication system has a problem that communication quality is lowered by increase of an attenuation amount of a desired signal and increase of an interfering signal amount at a position apart from a base station and high-speed data communication becomes difficult. To solve this problem, when a mobile station M is at a location D where the radio attenuation is small, the mobile station M uses an OFDM signal to transmit data x, y and z via a traffic channel all at once so that data communication is performed at the maximum communication speed. On the other hand, when the mobile station M moves from the location D to a location E which is far from any of the base stations A, B and C, the mobile station M divides, the data x, y and z into three and, by using a diffusion OFDM signal having a high interference resistance, increases the interference resistance, and transmits data, x, y and z almost simultaneously from the three base stations A, B and C, thereby realizing equivalence of high-speed data transmission. | 09-02-2010 |
Hidenobu Fukumasa, Narashino-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090137237 | WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND MACRODIVERSITY SELECTION METHOD - A wireless communication system, a base station device, a mobile station device, and a macrodiversity selection method of the invention, in a base station device including a macrodiversity function among a plurality of sectors, select a macrodiversity method for the mobile station device from a plurality of macrodiversity methods, in accordance with a predetermined determination reference based on reception conditions of the mobile station device. | 05-28-2009 |
Takeshi Fukumasa, Osaka JP
| Patent application number | Description | Published |
|---|---|---|
| 20110132493 | FUEL SUPPLY ADAPTOR DEVICE AND FUEL SUPPLY DEVICE - It is a fuel supply adaptor device which connects the apparatus having a fuel injecting portion including a power generator formed of fuel cells to the fuel cartridge having a fuel supplying portion and delivers the fuel in the fuel cartridge to the power generator, comprising a second connector for making connection to the fuel injecting portion of at least one apparatus, a first connector for making connection to the fuel supplying portion of at least one fuel cartridge, a connecting pipe for connecting the first connector to the second connector, and a holder, wherein the first connector, the second connector, and the connecting pipe are held by the holder. | 06-09-2011 |