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1. (DK2375604) Trådløst kommunikationsapparat, trådløst kommunikationssystem og fremgangsmåde til trådløs kommunikation

Office : Denmark
Application Number: 10729168 Application Date: 06.01.2010
Publication Number: 2375604 Publication Date: 19.11.2018
Grant Number: 2375604 Grant Date: 19.11.2018
Publication Kind : T3
IPC:
H04B 7/10
H04J 99/00
H04B 7/00
H04B 7/04
H04B 7/0413
H04B 7/0456
H04B 7/06
H04J 11/00
H04L 25/02
H04L 25/03
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
02
Diversity systems
10
using a single aerial system characterised by its polarisation or directive properties, e.g. polarisation diversity, direction diversity
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
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
[IPC code unknown for H04B 7/0413][IPC code unknown for H04B 7/0456]
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
06
at transmitting station
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
11
Orthogonal multiplex systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25
Baseband systems
02
Details
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
Applicants: Sun Patent Trust
Inventors: YU, Qian
Priority Data: 2009001352 07.01.2009 JP
Title: (DA) Trådløst kommunikationsapparat, trådløst kommunikationssystem og fremgangsmåde til trådløs kommunikation
Abstract:
(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:
EP2375604JPWO2010079748US20110261894CN102273115JP2013225934EP2660991
JP2014112841US20140219381US20140226742US20150103939JP2015119493ES2691037
WO/2010/079748