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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Akita; Koji
Address:
Yokohama, JP
No. of patents:
9
Patents:












Patent Number Title Of Patent Date Issued
8175558 Radio communication apparatus and method May 8, 2012
A radio communication apparatus includes a first acquisition unit configured to acquire a first frequency use status of a first frequency band having a first center frequency, a second acquisition unit configured to acquire a second frequency use status of a second frequency band hav
8116398 Transmission method, transmitter, and receiver for multi antenna wireless communication system February 14, 2012
A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of f
8094553 Base station, radio terminal and radio communication method January 10, 2012
According to an aspect of the present invention, there is provided with a radio communication method using an OFDMA scheme for uplink communication from a plurality of radio terminals to a base station, including: detecting communication states of the radio terminals; and arranging null
7808885 Method of transmitting OFDM signal and transmitter and receiver thereof October 5, 2010
An OFDM transmitter includes, a data signal generator which generates a data signal by modulating a bit string obtained by channel coding, a pilot signal generator which generates a pilot signal, an allocation unit which allocates the pilot signal and data signal to a pilot subcarrier
7760618 Method of transmitting OFDM signal and transmitter and receiver thereof July 20, 2010
A method of transmitting OFDM signals including, allocating a first pilot signal and a first data signal which are both common among OFDM transmitters respectively to at least one first pilot subcarrier and first data subcarriers within a specific time-frequency domain that is common
7447271 Radio receiving apparatus and method November 4, 2008
Radio receiving apparatus includes antennas, radio units adjusting gains of received signals, and outputting the adjusted received signals, respectively, converters converting the adjusted received signals into digital signals, selector device which selects several of the digital sig
7308037 Radio receiving apparatus and method December 11, 2007
Radio receiving apparatus includes antennas, radio units adjusting gains of received signals, and outputting the adjusted received signals, respectively, converters converting the adjusted received signals into digital signals, selector device which selects several of the digital sig
7283598 OFDM receiver apparatus October 16, 2007
An OFDM receiver apparatus comprises a receiver to receive an OFDM signal, an estimator to estimate a distortion, a distortion compensator subjecting the sub-carrier to distortion compensation according to a control signal to generate a distortion-compensated sub-carrier, a demodulat
4767486 Method of manufacturing an electrostatic capacitance type information signal recording medium August 30, 1988
An electrostatic capacitance type information signal recording disc comprises a laminated plate made up of a first sheet which is made from an inexpensive conductive or non-conductive material and is used as a core material and a second sheet which is made from a conductive material and










 
 
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