CA2272930C - Systeme de traitement de signaux dans le meme canal - Google Patents

Systeme de traitement de signaux dans le meme canal Download PDF

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Publication number
CA2272930C
CA2272930C CA002272930A CA2272930A CA2272930C CA 2272930 C CA2272930 C CA 2272930C CA 002272930 A CA002272930 A CA 002272930A CA 2272930 A CA2272930 A CA 2272930A CA 2272930 C CA2272930 C CA 2272930C
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CA
Canada
Prior art keywords
signals
signal
generating
egsv
received
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA002272930A
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English (en)
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CA2272930A1 (fr
Inventor
Mithat Can Dogan
Stephen Deane Stearns
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Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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Publication date
Application filed by TRW Inc filed Critical TRW Inc
Publication of CA2272930A1 publication Critical patent/CA2272930A1/fr
Application granted granted Critical
Publication of CA2272930C publication Critical patent/CA2272930C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Noise Elimination (AREA)

Abstract

Cette invention se rapporte à un procédé et à un appareil qui servent à traiter des signaux dans le même canal reçus au niveau d'un groupement de capteurs (110) dans un moteur de traitement et de séparation de signaux à base de cumulants, afin d'obtenir un groupe désiré de signaux de sortie (38) ou de paramètres. Pour pouvoir être utilisés dans un système de récupération de signaux, des signaux de sortie en question sont des versions séparées et récupérées des signaux transmis à l'origine dans le même canal. Une caractéristique importante qui distingue le système à base de cumulants des autres systèmes de récupération et de séparation de signaux est que le système à base de cumulants génère un vecteur d'orientation généralisé estimé qui est associé à chaque source de signaux et qui est représentatif de toutes les composantes de signal cohérentes reçues attribuables à la source en question. Cette caractéristique permet au système de cette invention de bien se comporter dans des conditions multivoies, en combinant toutes les composantes multivoies cohérentes provenant de la même source. Dans un système de récepteur/émetteur (316), les vecteurs d'orientation généralisés estimés qui sont associés à chaque source sont utilisés pour générer des vecteurs de pondération conformateurs de faisceaux de transmission qui permettent la transmission dans le même canal en direction de multiples stations d'utilisateurs (310). Ce moteur de traitement et de séparation générique à base de cumulants peut également être utilisé dans une grande variété d'applications, telles que l'enregistrement haute densité, l'égalisation d'angles de phase complexes, les systèmes de réception avec plage dynamique efficace accrue, et la séparation de signaux en présence de fortes interférences. Divers modes de réalisation et diverses extensions de ce système générique à base de cumulants sont présentés.
CA002272930A 1996-11-26 1996-11-26 Systeme de traitement de signaux dans le meme canal Expired - Lifetime CA2272930C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1996/018867 WO1998024192A1 (fr) 1996-11-26 1996-11-26 Systeme de traitement de signaux dans le meme canal

Publications (2)

Publication Number Publication Date
CA2272930A1 CA2272930A1 (fr) 1998-06-04
CA2272930C true CA2272930C (fr) 2003-08-12

Family

ID=22256190

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002272930A Expired - Lifetime CA2272930C (fr) 1996-11-26 1996-11-26 Systeme de traitement de signaux dans le meme canal

Country Status (4)

Country Link
EP (1) EP0948847A1 (fr)
CA (1) CA2272930C (fr)
IL (1) IL130034A (fr)
WO (1) WO1998024192A1 (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
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ITMI981280A1 (it) * 1998-06-05 1999-12-05 Italtel Spa Metodo di rqualizzazione spaziale e temporale a convergenza rapida per la cancellazione di interferenti isofrequenziali stazionari e non
KR100493150B1 (ko) 2000-04-10 2005-06-02 삼성전자주식회사 이동통신을 위한 폐루프 전송 다이버시티의 최적 가중치탐색장치 및 방법
US6261086B1 (en) * 2000-05-05 2001-07-17 Forney Corporation Flame detector based on real-time high-order statistics
WO2002021721A1 (fr) * 2000-09-11 2002-03-14 Siemens Aktiengesellschaft Procede de transmission d'information de mise en forme de faisceau dans un systeme de radiocommunication et stations appropriees
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US20040081131A1 (en) * 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8170513B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US7324429B2 (en) 2002-10-25 2008-01-29 Qualcomm, Incorporated Multi-mode terminal in a wireless MIMO system
US7437135B2 (en) 2003-10-30 2008-10-14 Interdigital Technology Corporation Joint channel equalizer interference canceller advanced receiver
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
US7466749B2 (en) 2005-05-12 2008-12-16 Qualcomm Incorporated Rate selection with margin sharing
US8358714B2 (en) 2005-06-16 2013-01-22 Qualcomm Incorporated Coding and modulation for multiple data streams in a communication system
EP2884675A1 (fr) * 2013-12-12 2015-06-17 Airbus Defence and Space Limited Compensation de phase ou d'amplitude en forme de faisceau
JP6293073B2 (ja) * 2015-02-02 2018-03-14 三菱電機株式会社 到来方向推定装置及び到来方向推定方法
GB2566731A (en) * 2017-09-25 2019-03-27 Focal Point Positioning Ltd System for determining a physical metric such as position
CN110412510A (zh) * 2018-04-26 2019-11-05 苏州触达信息技术有限公司 一种预定二维空间内的定位方法和定位系统
CN110146842B (zh) * 2019-06-14 2020-12-01 哈尔滨工业大学 基于欠采样的信号载频与二维doa参数估计方法
US11374636B2 (en) * 2020-01-08 2022-06-28 Rockwell Collins, Inc. System and method for nullforming with anti-jam antenna electronics
CN112526945B (zh) * 2020-11-09 2022-07-05 福建福瑞康信息技术有限公司 具备反馈与闭环控制功能的全流程监控与预警系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657173B1 (fr) * 1990-01-16 1992-04-10 Thomson Csf Procede et dispositif de separation de signaux en temps reel.
US5515378A (en) * 1991-12-12 1996-05-07 Arraycomm, Inc. Spatial division multiple access wireless communication systems
IL101556A (en) * 1992-04-10 1996-08-04 Univ Ramot Multi-channel signal separation using cross-polyspectra
US5680142A (en) 1995-11-07 1997-10-21 Smith; David Anthony Communication system and method utilizing an antenna having adaptive characteristics
US5771439A (en) 1996-05-20 1998-06-23 Raytheon E-Systems, Inc. Adaptive antenna system and method for cellular and personal communication systems

Also Published As

Publication number Publication date
WO1998024192A1 (fr) 1998-06-04
EP0948847A1 (fr) 1999-10-13
IL130034A (en) 2003-04-10
IL130034A0 (en) 2001-04-30
CA2272930A1 (fr) 1998-06-04

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