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1. WO2005065070 - FREQUENCY SELECTIVE TRANSMIT SIGNALWEIGHTING FOR MULTIPLE ANTENNA COMMUNICATIONS SYSTEMS

Publication Number WO/2005/065070
Publication Date 21.07.2005
International Application No. PCT/US2004/024656
International Filing Date 29.07.2004
IPC
H04B 1/69 2006.01
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
69Spread spectrum techniques
H04B 1/707 2006.01
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
69Spread spectrum techniques
707using direct sequence modulation
H04B 1/713 2006.01
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
69Spread spectrum techniques
713using frequency hopping
H04L 5/12 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
02Channels characterised by the type of signal
12the signals being represented by different phase modulations of a single carrier
H04L 23/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
23Apparatus or local circuits for telegraphic systems other than those covered by groups H04L15/-H04L21/139
02adapted for orthogonal signalling
H04L 27/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
02Amplitude-modulated carrier systems, e.g. using on/off keying; Single sideband or vestigial sideband modulation
04Modulator circuits; Transmitter circuits
CPC
H04B 7/0615
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
0615of weighted versions of same signal
H04B 7/0626
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
0615of weighted versions of same signal
0619using feedback from receiving side
0621Feedback content
0626Channel coefficients, e.g. channel state information [CSI]
H04B 7/063
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
0615of weighted versions of same signal
0619using feedback from receiving side
0621Feedback content
063Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
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
H04L 2025/03426
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
0335characterised by the type of transmission
03426transmission using multiple-input and multiple-output channels
H04L 25/03178
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
03178Arrangements involving sequence estimation techniques
Applicants
  • ZYRAY WIRELESS, INC. [US]/[US] (AllExceptUS)
  • CATREUX, Severine [FR]/[US] (UsOnly)
  • ERCEG, Vinko [US]/[US] (UsOnly)
  • ROUX, Pieter, W. [ZA]/[US] (UsOnly)
  • VAN ROOYEN, Pieter [ZA]/[US] (UsOnly)
  • WINTERS, Jack [US]/[US] (UsOnly)
Inventors
  • CATREUX, Severine
  • ERCEG, Vinko
  • ROUX, Pieter, W.
  • VAN ROOYEN, Pieter
  • WINTERS, Jack
Agents
  • ZIMMER, Kevin, J.
Priority Data
60/491,12829.07.2003US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FREQUENCY SELECTIVE TRANSMIT SIGNALWEIGHTING FOR MULTIPLE ANTENNA COMMUNICATIONS SYSTEMS
(FR) PONDERATION DE SIGNAL DE TRANSMISSION A SELECTION DE FREQUENCE POUR SYSTEMES DE COMMUNICATION A ANTENNES MULTIPLES
Abstract
(EN)
A system and method for generating transmit weighting values (514) for signal weighting that may be used in various transmitter and receiver structures is disclosed herein. The weighting values are determined as a function of frequency based upon a state of a communication channel (512) and the transmission mode of the signal. In variations, weighting of the weighted signal that is transmitted through each of a plurality of antennas is carried out with one of a corresponding plurality of transmit antenna spatial weights (522). In these variations, a search may be conducted over various combinations of transmit weighting values and transmit antenna spatial weights in order to find a weight combination that optimizes a performance measure such as the output signal-to-noise ratio, the output bit error rate or the output packet error rate.
(FR)
L'invention concerne un système et un procédé pour générer des valeurs de pondération de transmission permettant une pondération de signaux d'application en structures différents de transmission et réception. Les valeurs de pondération sont déterminés en fonction de fréquence en vue de l'état d'un canal de communication et le mode de transmission du signal. Dans d'autres formes de réalisation, la pondération du signal pondéré transmis par chaque antenne respectivement est mise en oeuvre en utilisant un coefficient correspondant de pondération spatial d'antenne à transmission. On peut ainsi faire une recherche parmi diverses combinaisons de valeurs de pondération de transmission et coefficients de pondération spatial d'antenne à transmission afin de trouver une combinaison de valeurs de pondération permettant l'optimisation d'une mesure de performance telle que le rapport signal sur bruit, le taux d'erreur binaire de sortie ou le taux d'erreur paquet de sortie.
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