Patent application number | Description | Published |
20100158080 | WIRELESS RECEPTION DEVICE, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - A wireless reception device which communicates with a wireless transmission device which has a plurality of transmission antennas, includes at least one reception antenna which receives a plurality of transmission signals transmitted from the plurality of transmission antennas of the wireless transmission device; a channel response estimation unit which estimates a channel response between a plurality of transmission antennas and the reception antenna; a block dividing unit which divides a reception signal of at least one reception antennas into a plurality of blocks; and a transmission signal detection unit which detects the plurality of transmission signals transmitted by the wireless transmission device based on a plurality of reception signals divided by the block dividing unit and the channel response estimated by the channel response estimation unit. | 06-24-2010 |
20100183094 | RECEPTION DEVICE AND RECEPTION METHOD - A reception device includes a block division setting unit which sets a block division setting value based on an arrived delay wave group, a replica signal generating unit which generates a replica signal which is a replica of a transmitted signal based on a received signal, a delay wave removing unit which removes delay waves from the received signal for every time period, the removals being performed by using the block division setting value set by the block division setting unit and the replica signal, a combining unit which combines the signal from which the delay wave was removed, the combining being performed by the combining unit for every time period, and a determining unit which makes determination on the signal combined by the combining unit. | 07-22-2010 |
20100290564 | RECEPTION DEVICE AND RECEPTION METHOD - A reception device includes a replica signal generating unit which generates a replica signal which is a replica of a transmitted signal based on a received signal, a time period setting unit which sets a plurality of time periods which time period of the received signal is divided into based on a received power of the received signal, an arrival wave removing unit which removes an arrival waves from the received signal for each time period set by the time period setting unit using the replica signal generated by the replica signal generating unit, a combining unit which combines the signals that the arrival waves are removed by the arrival wave removing unit from the received signal for each time periods set by the time period setting unit; and a demodulation processing unit which performs a demodulation process for the signal combined by the combining unit. | 11-18-2010 |
20110206031 | RECEIVER AND RECEIVING METHOD - A receiver includes a replica signal generating unit which generates a replica signal as a replica of a transmission signal based on a received signal; a time zone setting unit which sets a plurality of time zones to be extracted such that a part of a signal interval of the received signal is included in the plurality of time zones to be extracted; a signal extracting unit which extracts a signal in a predetermined time zone of the received signal based on the replica signal and a time zone which is set by the time zone setting unit; a combining unit which combines signals of the respective time zones extracted by the signal extracting unit; and a decoding processing unit which carries out decoding on the signal combined by the combining unit. | 08-25-2011 |
20120127949 | COMMUNICATION SYSTEM, COMMUNICATION METHOD AND BASE STATION - In a communication system including a mobile station that transmits a data signal and a plurality of base stations receiving the data signal transmitted by the mobile station, the communication system includes: as the base stations, at least, one first base station having a first signal detector detecting the data signal transmitted by the mobile station; and, at least, one second base station having a second signal detector that detects the data signal received by the station per se, using the detection result which the first base station has detected from the data signal transmitted by the mobile station. As a result, it is possible to provide a communication system and the like capable of providing good transmission characteristics in the uplink cooperative communication without addition of CPs having a longer length than usual. | 05-24-2012 |
20120219079 | RECEIVING DEVICE, RECEIVING METHOD, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - Provided is a receiving device including: a receiving unit that receives a multicarrier modulation signal; an interference cancelling unit that removes a modulation symbol replica generated using a decoding process result, from the signal received by the receiving unit, and outputs the resultant signal; and a signal detecting unit that decodes the signal outputted by the interference cancelling unit, and outputs the decoding process result. The interference cancelling unit generates the modulation symbol replica with the use of the decoding process result of part of data modulation symbols constituting the signal received by the receiving unit. | 08-30-2012 |
20120230445 | RECEPTION DEVICE, RECEPTION METHOD, AND RECEPTION PROGRAM - A propagation channel estimation unit estimates a propagation channel estimated value. A symbol replica generation unit generates a symbol replica which is a modulated symbol from demodulated information. A signal extraction unit extracts each subcarrier component from a received signal from which interference has been removed, based on the propagation channel estimated value and the symbol replica. A demodulation unit demodulates the signals of the subcarrier components extracted by the signal extraction unit. | 09-13-2012 |
20130003901 | RECEIVING DEVICE, RECEIVING METHOD, RECEIVING PROGRAM, AND PROCESSOR - A propagation channel estimation unit estimates a propagation channel estimation value. A symbol replica generation unit generates a symbol replica that is modulated symbol of a demodulated information. A signal extraction unit extracts, in an arbitrary time duration, each subcarrier component of a received signal in which an interference signal was removed, the extraction being made based on the propagation channel estimation value and the symbol replica. A demodulator demodulates a signal of each subcarrier component in the received signal, the demodulation being made based on signal during the time duration extracted by the signal extraction unit. | 01-03-2013 |
20130182802 | RECEIVER APPARATUS, RECEPTION METHOD, AND RECEPTION PROGRAM - A receiver apparatus includes a propagation channel estimating unit that estimates a propagation channel. The propagation channel estimating unit includes a path detector unit that repeatedly performs a process of detecting paths in the order of increase in a propagation channel goodness of fit. The receiver apparatus that estimates a propagation channel at a high accuracy level with a small amount of calculation operation involved is thus provided. | 07-18-2013 |
20130308733 | RECEIVER APPARATUS, RECEPTION METHOD, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A receiver apparatus includes a channel estimator (b | 11-21-2013 |
20130315191 | BASE STATION DEVICE, MOBILE STATION DEVICE, COMMUNICATION SYSTEM, TRANSMISSION METHOD, RECEPTION METHOD, AND COMMUNICATION METHOD - Inter-cell Interference is efficiently mitigated or suppressed in a radio communication system constituting a heterogeneous network. In the radio communication system in which a base station device and a mobile station device communicate with each other, the base station device notifies, to the mobile station device, control information related to a cell-specific reference signal that is specific to a cell ID of another base station device different from the aforesaid base station device, the control information containing information regarding number of ports for the cell-specific reference signal. | 11-28-2013 |
20140192936 | RECEIVING DEVICE, RECEIVING METHOD, AND RECEIVING PROGRAM - To provide a receiving device, a receiving method, and a receiving program, which are capable of reducing performance degradation in a case where the spatial correlation of a channel becomes high. | 07-10-2014 |
20140241470 | RECEIVER APPARATUS, RECEPTION METHOD, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A receiver apparatus includes a first frequency response estimator configured to calculate a first frequency response estimation value using a reference signal, a duration extractor configured to determine an estimation duration by extracting at least one duration from among a plurality of duration candidates into which a predetermined maximum delay time is divided, and a second frequency response estimator configured to calculate a second frequency response estimation value as a frequency response estimation value for demodulation using the first frequency response and the estimation duration. The receiver apparatus thus performs high-precision channel estimation even if a variety of PDPs occur with time. | 08-28-2014 |
20140286298 | COMMUNICATION SYSTEM, COMMUNICATION METHOD, BASE STATION APPARATUS, AND MOBILE STATION APPARATUS - A communication system, a communication method, a base station apparatus, and a mobile station apparatus capable of improving spectral efficiency even when inter-cell interference is caused between cells of a plurality of base station apparatuses are provided. | 09-25-2014 |
20140315559 | COMMUNICATION SYSTEM AND BASE STATION APPARATUS - There is provided an invention whose object is to efficiently perform exchange of control information, for example, in the case where a plurality of cells cooperate to moderate inter-cell interference, like the IA technology. | 10-23-2014 |
20150023317 | COMMUNICATION SYSTEM, COMMUNICATION METHOD, BASE STATION APPARATUS, AND TERMINAL APPARATUS - Frequency utilization efficiency is increased while inter-cell interference is controlled. | 01-22-2015 |
20150043683 | RECEIVING DEVICE, RECEIVING METHOD, AND RECEIVING PROGRAM - GI removers b | 02-12-2015 |