Patent application number | Description | Published |
20090310697 | MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) TRANSMITTER AND COMMUNICATION SYSTEM - A Multiple-Input Multiple-Output (MIMO) transmitter | 12-17-2009 |
20100086081 | MODULATION DEVICE AND DEMODULATION DEVICE - Provided is a modulation device which generates a phase modulation signal and an amplitude modulation signal and can correct an I/Q orthogonal shift and reduce degradation of the ON/OFF ratio. In the device, a phase shifter ( | 04-08-2010 |
20100278124 | ADAPTIVE BEACON COORDINATION IN COMMUNICATION NETWORK USING SIGNAL FORMATS - An adaptive beacon coordination method in a communication network using signal formats mutually incompatible. A coordination device broadcasts a first beacon in a first signal format and a second beacon in a second signal format in a superframe. The first and second beacons are used to send medium access information to a client device having the first signal format and a client device having the second signal format, respectively. When there are three or more signal formats in a network, the coordination device can broadcast three or more beacons. The number of beacons can be adapted to various superframes according to the functions of all the client devices in the network. If all the client devices support a signal format, the coordination device broadcasts only a single beacon in the signal format. After a predetermined number of superframes, the coordination device again starts to broadcast beacons so that new client devices having different respective signal formats can join the network. | 11-04-2010 |
20110255461 | TRANSMISSION EQUIPMENT AND METHOD FOR SENDING CONTROL MESSAGES - Disclosed are transmission apparatus and a method for sending control information in which the processing time and power consumption at the reception side are reduced by improving the efficiency of reception processing at the reception side. At a base station ( | 10-20-2011 |
20110261894 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - In a MIMO system using a cross-polarized antenna structure, even if no ideal XPD can be obtained, the interference between different polarized waves can be reduced to allow an effective precoding to be executed. When a MIMO communication is performed between a transmitter ( | 10-27-2011 |
20130021981 | BASE STATION, MOBILE STATION, COORDINATED MOBILE STATION, TRANSMISSION METHOD AND RECEPTION METHOD - A base station (BS) which communicates with a plurality of mobile stations (MSs) is configured so as to comprise a control signal generation unit which generates control signals showing information on the allocation of resources for each of the plurality of mobile stations (MSs), and a transmission unit which transmits the control signals to the plurality of mobile stations (MSs). A control signal for a given mobile station (MS) includes information relating to another mobile station (MS). | 01-24-2013 |
20130163522 | WIRELESS COMMUNICATION DEVICE AND HYBRID AUTOMATIC REPEAT REQUEST TRANSMISSION METHOD - By reducing the overlap between HARQ subpackets transmitted by means of a transmitting MS and a cooperative MS, the disclosed method is capable of increasing gains in HARQ IR signal synthesis. The method transmits a hybrid automatic repeat request (HARQ) in a cooperative communication system formed so as to comprise a transmitting mobile station (MS) and a cooperative MS, and involves creating individual HARQ subpackets transmitted by means of the transmitting MS and the cooperative MS such that said subpackets are arranged in mutually opposite directions in a circular buffer. | 06-27-2013 |
20140219381 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - In a MIMO system using a cross-polarized antenna structure, even if no ideal XPD can be obtained, the interference between different polarized waves can be reduced to allow an effective precoding to be executed. When a MIMO communication is performed between a transmitter and a receiver each using a cross-polarized antenna structure, a channel estimating and precoding selection section of the receiver performs a channel estimation of MIMO channels from the transmitter to the receiver, decides a precoding matrix of a projection matrix for mutually orthogonalizing or substantially orthogonalizing the channel response matrixes for respective different polarized waves, and feeds the determined precoding matrix back to the transmitter. In the transmitter, a precoding processing section applies the precoding matrix to the spatial stream corresponding to one of the polarized waves to perform a precoding, thereby allowing the transmitter to transmit the polarized waves with the orthogonality therebetween maintained. | 08-07-2014 |
20140253929 | APPARATUS AND METHOD FOR 3D SURFACE MEASUREMENT - An apparatus for 3D surface measurement of a target surface, the apparatus comprising: a first projector configured to project a fringe pattern onto the target surface; a second projector configured to project a fringe pattern onto the target surface; a first camera configured to capture the fringe patterns projected by the first projector and the second projector; a second camera configured to capture the fringe patterns projected by the first projector and the second projector; and a computer configured to perform fringe pattern processing of the fringe patterns captured by the first camera and the second camera and to perform data stitching and merging to obtain a 3D surface reconstruction. | 09-11-2014 |