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1. AU2002302314 - Indoor radio transmission method for parallel radio transmission of digital data sub-streams and a mobile radio transmission system

Office
Australia
Application Number 2002302314
Application Date 15.03.2002
Publication Number 2002302314
Publication Date 12.12.2002
Publication Kind A
IPC
H04J 99/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
99Subject matter not provided for in other groups of this subclass
H04B 1/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
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
H04L 1/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
02by diversity reception
06using space diversity
CPC
H04B 7/0842
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
08at the receiving station
0837using pre-detection combining
0842Weighted combining
H04B 7/0413
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
H04B 7/0669
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0667of delayed versions of same signal
0669using different channel coding between antennas
H04L 1/0618
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
02by diversity reception
06using space diversity
0618Space-time coding
Applicants FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Inventors Haustein, Thomas
Jungnickel, Volker
Kruger, Udo
Pohl, Volker
Stanczak, Slawomir
Von Helmolt, Clemens
Priority Data 10114052 15.03.2001 DE
Title
(EN) Indoor radio transmission method for parallel radio transmission of digital data sub-streams and a mobile radio transmission system
Abstract
(EN)
The invention relates to a novel radio transmission method and a wireless transmission system comprising multiple, transmitter and receiver antennas simultaneously operating within the same frequency range and space-time encoders and decoders. Said method is based on the known BLAST method, according to which data transmission and channel matrix measurement take place in a temporally alternating manner to determine the transmission behaviour. Precise novel measuring technology for the channel matrix is introduced so that both operations can take place synchronously. Characteristic pilot signals (Pi(t)) that are unequivocally recognisable are super-imposed with low-noise on the data sub-signals (Di(t)) in the transmitter (Tx) and are used in the receiver (Rx) for the analogue measurement of the channel matrix ([H]) in a weighting unit (WU) and for the analogue recovery of the transmitted data sub-signals (Di(t)) from the received signals (Ej(t)). The analogue measured values (I, Q) are digitally processed in a signal processor (DSP). The weightings (Ii,j) thus determined are then impressed upon the received signals by means of IQ modulators (IQ modij), as a principal circuit constituent (Ej(t)). The received signals are then totalled in an analogue signal processing unit (ASU). The synchronism and the extensive hardware structure permit high-speed data transmission rates of up to 100 Mbit/s with a high spectral efficiency. One possible application is the wireless indoor LAN.