Invention Grant
US08681746B2 Radio communications apparatus, radio communications method, and radio communications system for reducing overhead of a transmit frame
有权
无线电通信装置，无线电通信方法和用于减少发射帧的开销的无线电通信系统
- Patent Title: Radio communications apparatus, radio communications method, and radio communications system for reducing overhead of a transmit frame
- Patent Title (中): 无线电通信装置，无线电通信方法和用于减少发射帧的开销的无线电通信系统
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Application No.: US12783141Application Date: 2010-05-19
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Publication No.: US08681746B2Publication Date: 2014-03-25
- Inventor: Jaturong Sangiamwong , Takahiro Asai , Hidekazu Murata , Susumu Yoshida
- Applicant: Jaturong Sangiamwong , Takahiro Asai , Hidekazu Murata , Susumu Yoshida
- Applicant Address: JP Tokyo
- Assignee: NTT DoCoMo, Inc.
- Current Assignee: NTT DoCoMo, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-138649 20090609
- Main IPC: H04W4/00
- IPC: H04W4/00
Abstract:
A radio communications apparatus is disclosed which includes a generator which generates a transmit frame; and a transmitter which transmits the transmit frame via multiple transmit antennas. In the radio communications apparatus, the transmit frame includes a predetermined number of resource elements having a predetermined frequency bandwidth and a predetermined symbol period, and the generator generates the transmit frame such that the number of transmit antennas which are identifiable from a location of the resource element taken up by a pilot signal in a certain transmit frame is less than the number of transmit antennas which are identifiable from the location of the resource element taken up by the pilot signal in a retransmission transmit frame of the certain transmit frame.
Public/Granted literature
- US20100309863A1 RADIO COMMUNICATIONS APPARATUS, RADIO COMMUNICATIONS METHOD, AND RADIO COMMUNICATIONS SYSTEM Public/Granted day:2010-12-09
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