The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
May. 19, 2010
Jaturong Sangiamwong, Yokosuka, JP;
Takahiro Asai, Yokosuka, JP;
Hidekazu Murata, Hirakata, JP;
Susumu Yoshida, Uji, JP;
Jaturong Sangiamwong, Yokosuka, JP;
Takahiro Asai, Yokosuka, JP;
Hidekazu Murata, Hirakata, JP;
Susumu Yoshida, Uji, JP;
NTT DoCoMo, Inc., Tokyo, JP;
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.