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1. (US20110261894) Wireless communication apparatus, wireless communication system and wireless communication method

Office : United States of America
Application Number: 13141743 Application Date: 06.01.2010
Publication Number: 20110261894 Publication Date: 27.10.2011
Grant Number: 08737509 Grant Date: 27.05.2014
Publication Kind : B2
Prior PCT appl.: Application Number:PCTJP2010000048 ; Publication Number: Click to see the data
IPC:
H04L 1/02
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1
Arrangements for detecting or preventing errors in the information received
02
by diversity reception
Applicants: Yu Qian
Panasonic Corporation
Huang Lei
Hoshino Masayuki
Imamura Daichi
Inventors: Yu Qian
Huang Lei
Hoshino Masayuki
Imamura Daichi
Agents: Pearne & Gordon LLP
Priority Data: P2009-001352 07.01.2009 JP
Title: (EN) Wireless communication apparatus, wireless communication system and wireless communication method
Abstract: front page image
(EN)

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 (250) and a receiver (260) each using a cross-polarized antenna structure, a channel estimating and precoding selection section (214) of the receiver (260) performs a channel estimation of MIMO channels from the transmitter to the receiver, decides a precoding matrix (P) 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 (P) back to the transmitter (250). In the transmitter (250), a precoding processing section (208) applies the precoding matrix (P) to the spatial stream corresponding to one of the polarized waves to perform a precoding, thereby allowing the transmitter (250) to transmit the polarized waves with the orthogonality therebetween maintained.


Also published as:
EP2375604JPWO2010079748CN102273115JP2013225934EP2660991JP2014112841
US20140219381US20140226742US20150103939JP2015119493DK2375604ES2691037
WO/2010/079748