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1. (CN102273115) Wireless communication apparatus, wireless communication system and wireless communication method

Office : China
Application Number: 201080004076.1 Application Date: 06.01.2010
Publication Number: 102273115 Publication Date: 07.12.2011
Grant Number: 102273115 Grant Date: 17.06.2015
Publication Kind : B
Prior PCT appl.: Application Number:PCTJP2010000048 ; Publication Number:2010079748 Click to see the data
IPC:
H04L 25/03
H04J 99/00
H04B 7/04
H04J 11/00
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25
Baseband systems
02
Details
03
Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
99
Subject matter not provided for in other groups of this subclass
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
02
Diversity systems
04
using a plurality of spaced independent aerials
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
11
Orthogonal multiplex systems
CPC:
H04B 7/0456
H04B 7/002
H04B 7/0413
H04B 7/0469
H04B 7/0617
H04B 7/0634
H04B 7/0639
H04B 7/0691
H04B 7/10
H04L 25/0224
H04L 25/0248
H04L 25/03898
H04L 25/03961
H04L 2025/03808
Applicants: 松下电器(美国)知识产权公司
Inventors: 于谦
黄磊
星野正幸
今村大地
Agents: 北京市柳沈律师事务所 11105
Priority Data: 2009-001352 07.01.2009 JP
Title: (EN) Wireless communication apparatus, wireless communication system and wireless communication method
(ZH) 无线通信设备、无线通信系统和无线通信方法
Abstract: front page image
(EN) In a MIMO system using a cross-polarization 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-polarization antenna structure, a channel estimating/precoding selecting unit (214) of the receiver (260) performs a channel estimation of MIMO channels from the transmitter to the receiver, decides a precoding matrix (P) using a projection matrix for causing the channel response matrixes of different polarized waves to be orthogonal or nearly orthogonal to each other, and feeds the decided precoding matrix (P) back to the transmitter (250). In the transmitter (250), a precoding processing unit (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.
(ZH)

在使用交叉极化天线结构的MIMO系统中,即使不能获得理想的XPD,不同的极化波之间的干扰也能够被减小,以允许执行有效的预编码。当在各自使用交叉极化天线结构的传送器(250)和接收器(260)之间执行MIMO通信时,接收器(260)的信道估计和预编码选择单元(214)执行对从传送器到接收器的MIMO信道的信道估计,确定使用投影矩阵的预编码矩阵(P),使得不同极化波的信道响应矩阵相互正交或基板正交化,并将所确定的预编码矩阵(P)反馈到传送器(250)。在传送器(250)中,预编码处理单元(208)将预编码矩阵(P)应用到对应于极化波之一的空间流以执行预编码,从而允许传送器(250)在保持极化波之间的正交性的情况下传送极化波。


Also published as:
EP2375604JPWO2010079748US20110261894JP2013225934EP2660991JP2014112841
US20140219381US20140226742US20150103939JP2015119493DK2375604ES2691037
WO/2010/079748