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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Kishigami; Takaaki
Address:
Tokyo, JP
No. of patents:
13
Patents:












Patent Number Title Of Patent Date Issued
8265182 Radio transmission device and radio reception device September 11, 2012
Provided is a radio transmission device (100) which can flexibly cope with a request for assuring an error ratio feature during a high transmission rate, a request for increasing a cell coverage, or the like. The radio transmission device (100) includes a first subcarrier modulation
8261169 Wireless communication apparatus and wireless communication method September 4, 2012
The invention is embodied for solving a problem of occurrence of degradation of the reception characteristic caused by the interference signal component if a symbol making a determination error is contained or if an error factor caused by a propagation channel estimation error or a h
8260358 Communication system, base station control device, and base station device September 4, 2012
There are provided a communication system, a base station control device, and a base station device capable of improving communication quality. In the communication system (100), the base station control device (120) totalizes information on the number of base stations as the number of
8243834 Wireless communication device August 14, 2012
A wireless communication device (1) comprises a spatially-multiplexed PSC extracting section (8) for extracting a spatially multiplexed known pilot subcarrier signal (S5) from the received multicarrier-modulated signal, a reference signal generating section (7) for generating a reference
8229016 MIMO receiver and MIMO communication system July 24, 2012
An MIMO receiver and MIMO communication system which can have a small hardware scale even if the number of antennas used for MIMO communication. In a radio communication device (200), a receiving section (220) receives a spatially multiplexed signal generated by mutually-different an
8189649 Wireless communication apparatus May 29, 2012
In a wireless communication apparatus adopting a time division duplex system for executing transmission and reception using a plurality of antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication
8135084 Multiantenna receiving device March 13, 2012
A multiantenna receiving device is provided to make it possible to cope with both improvement in error rate characteristic and simplification in structure. The multiantenna receiving device is comprised of soft judgement output units (520_A, 522_A, 524_B, 526_B) for carrying out a so
8009578 Wireless base station device, terminal, and wireless communication method August 30, 2011
A wireless base station device includes a plurality of transmit weight generation sections and a beam selection section. The transmit weight generation sections generate pieces of transmit weight information used for spatial division multiplexing transmission according to different a
8000379 Radio communication apparatus August 16, 2011
An object of the invention is to stabilize the convergence operation at the automatic impedance matching time and ensure the reception quality in the convergence process in a fading environment in a radio communication apparatus which performs automatic impedance matching between an ante
7937057 Radio communication device May 3, 2011
A spatial filtering adaptable for an interference wave that appears unsteadily can be implemented and also an interference canceling ability can be increased even in a condition that the interference wave does not steadily exist. At a time of non-active communication, the signals from a
7929994 Base station apparatus April 19, 2011
There are provided a communication system, a base station control device, and a base station device capable of improving communication quality. In the communication system (100), the base station control device (120) totalizes information on the number of base stations as the number of
7676005 Wireless communication apparatus March 9, 2010
In a wireless communication apparatus adopting a time division duplex system for executing transmission and reception using a plurality of antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication
7184734 Radio communication apparatus February 27, 2007
A radio communication apparatus using an array antenna has a plurality of reception branches for conveying reception signals received at the antenna element of the array antenna, and a calibration branch for selecting one of the plurality of reception branches and conveying the recep










 
 
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