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1. AU2002325152 - Adaptive signal processing method in a mimo system

Office
Australia
Application Number 2002325152
Application Date 03.07.2002
Publication Number 2002325152
Publication Date 16.01.2003
Publication Kind A
IPC
H04L 5/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
14Two-way operation using the same type of signal, i.e. duplex
H04B 7/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
H04B 7/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
H04B 7/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
08at the receiving station
H04J 15/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
15Multiplex systems not otherwise provided for
Applicants HEINRICH-HERTZ-INSTITUT FUR NACHRICHTENTECHNIK BERLIN GMBH
Inventors Haustein, Thomas
Jorswieck, Eduard
Jungnickel, Volker
Kruger, Udo
V. Helmot, Clemens
Wunder, Gerhard
Priority Data 10132492 03.07.2001 DE
Title
(EN) Adaptive signal processing method in a mimo system
Abstract
(EN)
The invention relates to a signal processing method which optimises the bit error rate under pragmatic conditions. The signalling method is optimally matched to the radio channel, variable with time, in rapid sequence by means of linear operations. Upline and downline transmission sides are determined by an excess of antennae on the downline transmission side. The estimations of the channel matrix in the one transmission direction, necessary for the matching of the transmitter, can, in the absence of same-channel distortions with the condition of channel reciprocity, be directly obtained from the estimations for the other transmission direction. By means of a suitable linear combination of the transmission signals and, optionally, also the received signals, an error-free bi-directional transmission of data packets can be achieved in Rayleigh and Rice channels with significantly lower transmission powers than a purely receiver-side linear signal processing.