Patent application number | Description | Published |
20080293371 | Radio Communication Device - 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 plurality of interference source radio communication devices | 11-27-2008 |
20090046818 | RECEPTION DEVICE - It is possible to demodulate a plurality of modulated signals transmitted from a plurality of antennas by using a comparatively small-size circuit with a preferable error ratio characteristic. Partial bit judgment units ( | 02-19-2009 |
20090109943 | RADIO NETWORK SYSTEM, RADIO COMMUNICATION METHOD, AND RADIO COMMUNICATION DEVICE - A wireless network system including a first terminal for sending a request-to-send signal including information on a medium use period to a second terminal before sending data, receiving a clear-to-send signal from the second terminal, and sending data to the second terminal during the medium use period; the second terminal for receiving the request-to-send signal and sending the clear-to-send signal; a third terminal for receiving the request-to-send signal and transmitting data to a fourth terminal during the medium use period; ant the fourth terminal. Thus, it is possible to prevent occurrence of a problem that when it is judged that the wireless channel is being used, transmission of the station is suppressed. | 04-30-2009 |
20090125793 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - 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 hardware error (carrier frequency error, sampling frequency error) is contained at the interference canceling time in a wireless communication apparatus for iteratively decoding and receiving a spatial multiplex signal. A wireless communication apparatus | 05-14-2009 |
20110002421 | RECEPTION DEVICE - It is possible to demodulate a plurality of modulated signals transmitted from a plurality of antennas by using a comparatively small-size circuit with a preferable error ratio characteristic. Partial bit judgment units ( | 01-06-2011 |
Patent application number | Description | Published |
20100205511 | ENCODING METHOD, ENCODER, AND DECODER - A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3 | 08-12-2010 |
20100251061 | TRANSMISSION DEVICE - Provided is a transmission device which improves the error rate characteristic upon decoding when performing error correction encoding by using a self-orthogonal code or an LDPC-CC in a communication system using a communication path having a fading fluctuation, multi-value modulation, or MIMO transmission. In the transmission device, the self-orthogonal encoding unit ( | 09-30-2010 |
20100269009 | ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD - There is provided an encoder that provides a termination sequence with a simple structure for LDPC-CC encoding and reduces an amount of the termination sequence transmitted to a transmission line. The LDPC-CC encoder ( | 10-21-2010 |
Patent application number | Description | Published |
20090016263 | WIRELESS BASE STATION AND TERMINAL EQUIPMENT - It is an object to provide a wireless base station and a terminal equipment capable of shortening the processing time by not requiring the detection of the spatial correlation coefficient, which is required in general technology, and simplifying the selection process for terminal equipments to be connected to each other in a wireless base station that performs spatial multiplexing transmission to a plurality of terminal equipments and a terminal equipment responding for spatial multiplexing transmission. | 01-15-2009 |
20090044069 | TRANSMITTER APPARATUS AND MULTIANTENNA TRANSMITTER APPARATUS - A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. There are included an encoding part ( | 02-12-2009 |
20100122145 | TRANSMITTER APPARATUS AND MULTIANTENNA TRANSMITTER APPARATUS - A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form. data symbols; and an arranging (interleaving) part arranges(interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged(interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. | 05-13-2010 |
20110283160 | TRANSMITTER APPARATUS - A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form data symbols; and an arranging (interleaving) part arranges (interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged (interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. | 11-17-2011 |
20120254701 | MODULATOR AND MODULATION METHOD - A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form data symbols; and an arranging (interleaving) part arranges (interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged (interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. | 10-04-2012 |
Patent application number | Description | Published |
20120161538 | WIRELESS POWER TRANSMISSION SYSTEM - A wireless power transmission system transmits power wirelessly from a power transmitter to a power receiver. The power transmitter includes a class E amplifier, a transmitting-end resonant circuit, a detector that detects a voltage or current waveform at a predetermined position in the class E amplifier in accordance with the impedance of the transmitting-end resonant circuit as viewed from the class E amplifier, and a signal extractor that extracts a signal according to the waveform. The power receiver includes a receiving-end resonant circuit, a rectifier circuit, a power reproducing section, and an impedance changer connected between the rectifier circuit and the power reproducing section to change its impedance. When the impedance is changed, the detector detects the waveform variation and the signal extractor extracts and outputs a signal corresponding to the waveform detected by the detector. | 06-28-2012 |
20120163619 | WIRELESS POWER TRANSMISSION AUDIO SYSTEM AND DEVICE ON TRANSMITTING END AND LOUDSPEAKER FOR USE IN SUCH A SYSTEM - The transmitter of a wireless power transmission audio system includes: a transmission signal generating section for generating a transmission signal comprised of an RF signal; a first resonant circuit which receives and sends out the transmission signal; a detecting section for sensing a variation in the transmission signal; and a transmission signal adjusting section. The loudspeaker of the system includes: a second resonant circuit for receiving the transmission signal by producing a magnetic field resonant coupling phenomenon; and an audio output section for reproducing the audio signal. At least one of the transmitter and the loudspeaker includes an impedance adjusting section which changes an impedance value on the transmission line of the transmission signal. When the impedance adjusting section changes the impedance value, the transmission signal adjusting section changes the signal waveform of the transmission signal. | 06-28-2012 |
20120287985 | WIRELESS POWER AND DATA TRANSMISSION SYSTEM, POWER TRANSMITTING APPARATUS, AND POWER RECEIVING APPARATUS - A power transmitting apparatus is usable for wireless power and data transmission. The power transmitting apparatus includes a power transmitting section configured to transmit power and data to be transmitted as being converted into a pulse train; and a control section configured to control the power transmitting section such that a change of the power caused by superimposition of the data is decreased. | 11-15-2012 |
20120288019 | WIRELESS POWER AND DATA TRANSMISSION SYSTEM, POWER TRANSMITTING APPARATUS, AND POWER RECEIVING APPARATUS - A power receiving apparatus is usable in a system for wirelessly transmitting power and is capable of transmitting data to a power transmitting apparatus. The power receiving apparatus includes a power receiving section configured to receive power transmitted from the power transmitting apparatus as being converted into a pulse train; a variable load connected to the power receiving section; and a control section configured to change a load value of the variable load in accordance with a value of the data, such that in a state where the power is being transmitted from the power transmitting apparatus, a value of each of pulses included in the pulse train flowing in from the power transmitting apparatus is changed during a duration thereof. | 11-15-2012 |
20130139038 | ERROR CORRECTING DECODING DEVICE AND ERROR CORRECTING DECODING METHOD - The error correcting decoding device of the present invention performs Low-Density Parity-Check (LDPC) decoding which accommodates a plurality of code rates while sharing circuits to suppress increase in circuit scale. If the set code rate is a second code rate which is a higher code rate than a first code rate, a column processing and row processing calculating unit ( | 05-30-2013 |