Patent application number | Description | Published |
20090279527 | WIRELESS COMMUNICATION APPARATUS AND DATA MULTIPLEXING METHOD - A wireless transmitting apparatus capable of improving the reception characteristic at a data stream receiving end. In this apparatus, I/Q separating parts ( | 11-12-2009 |
20100111228 | RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD - Provided is a wireless communication apparatus wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. In the wireless communication apparatus ( | 05-06-2010 |
20100165926 | WIRELESS COMMUNICATION BASE STATION APPARATUS AND WIRELESS COMMUNICATION METHOD IN MULTICARRIER COMMUNICATION - Provided is a wireless communication apparatus by which reduction of a diversity gain can be suppressed at minimum in the case of employing a repetition technology in multicarrier communication. In the wireless communication apparatus ( | 07-01-2010 |
20100290548 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - When power scaling is applied to multi-user MIMO, a reduction in transmission rate is suppressed and transmission efficiency is improved. When signals are transmitted through spatial multiplexing from a wireless base station | 11-18-2010 |
20110096761 | COMMUNICATION DEVICE, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - There are provided a communication device, a base station, a communication system, and a communication method that make it possible to yield a diversity effect by cooperative relay without involvement of disproportionateness in data received by an eNB even when one of parties has unsuccessfully exchanged data. After received an ACK signal from a repeater | 04-28-2011 |
20110096877 | WIRELESS RECEIVER AND FEEDBACK METHOD - Disclosed is a wireless receiver and feedback method for reducing the amount of CQI feedback in a MIMO channel. A channel estimation unit ( | 04-28-2011 |
20110098004 | WIRELESS COMMUNICATION DEVICE AND QUANTIZATION METHOD - Provided is a wireless communication device which can improve the notification accuracy of the channel state information (CSI) without straining the feedback circuit. In this device, a channel estimator ( | 04-28-2011 |
20110105016 | RELAY STATION IN MOBILE COMMUNICATION SYSTEM, MOBILE STATION, AND RELAY TRANSMISSION METHOD - Provided is a mobile communication system capable of eliminating the use of a control channel for transmitting specific area information and suppressing the overhead caused by a frequency change process for a mobile station to receive the specific area information. In the mobile communication system, a relay station ( | 05-05-2011 |
20140153669 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A wireless communication apparatus and a wireless communication method wherein even when the permissible delay amount of data is small, the permissible delay thereof can be satisfied. A data type determining part determines whether the delay of transport data or control information should be allowed or not. A pilot signal insertion control part decides, based on pilot insertion interval information and allowable delay information, that a pilot signal is placed adjacently to data that is not allowed to delay. A multiplexing part multiplexes encoded and modulated transport data with the pilot signal generated by a pilot signal generating part in such a manner that realizes the placement decided by the pilot signal insertion control part. | 06-05-2014 |
20140211876 | INTEGRATED CIRCUIT FOR CONTROLLING RADIO TRANSMISSION AND RECEPTION - Data streams stored in buffers are modulated by modulation sections. Multipliers multiply the signals output from the modulation sections by weights output from a weight control section. The signals output from the multipliers are added up by addition sections, subjected to radio transmission processing by transmission radio sections and sent through antennas. A buffer control section controls the buffers based on a retransmission count output from a retransmission count detection section. The weight control section outputs weights different from weights at the time of previous transmission to the multipliers every time data is retransmitted. This allows a diversity gain at the time of data retransmission to be increased even if a time variation of the propagation path environment for radio signals is slow. | 07-31-2014 |
20140348119 | TERMINAL AND METHOD FOR TRANSMITTING A TRANSMISSION SIGNAL - Disclosed are a wireless communication base station device and a division number determination method that improve the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit. | 11-27-2014 |