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WO2007038018A3 - Elimination d'interference iterative au moyen de ponderations de retroaction mixtes ou de tailles de pas de stabilisation - Google Patents

Elimination d'interference iterative au moyen de ponderations de retroaction mixtes ou de tailles de pas de stabilisation Download PDF

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Publication number
WO2007038018A3
WO2007038018A3 PCT/US2006/036018 US2006036018W WO2007038018A3 WO 2007038018 A3 WO2007038018 A3 WO 2007038018A3 US 2006036018 W US2006036018 W US 2006036018W WO 2007038018 A3 WO2007038018 A3 WO 2007038018A3
Authority
WO
WIPO (PCT)
Prior art keywords
rake
stabilizing step
receiver
interference cancellation
step sizes
Prior art date
Application number
PCT/US2006/036018
Other languages
English (en)
Other versions
WO2007038018A2 (fr
Inventor
Tommy Guess
Michael L Mccloud
Vijay Nagarajan
Singh Lamba Gagandeep
Original Assignee
Tensorcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US11/233,636 external-priority patent/US8761321B2/en
Priority claimed from US11/451,688 external-priority patent/US7702048B2/en
Application filed by Tensorcomm Inc filed Critical Tensorcomm Inc
Publication of WO2007038018A2 publication Critical patent/WO2007038018A2/fr
Publication of WO2007038018A3 publication Critical patent/WO2007038018A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • H04B1/71075—Parallel interference cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70702—Intercell-related aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

L'invention porte sur un récepteur configuré pour éliminer les interférences intracellulaires et intercellulaires dans des transmissions codées, à accès multiple, par étalement du spectre qui se propagent via des voies de communication sélectives de fréquence vers plusieurs antennes de réception. Le récepteur utilise la pondération itérative par estimée de symbole, l'annulation soustractive avec une taille de pas de stabilisation, et des estimées de symbole par modélisation de décision mixte. Les récepteurs selon certains modes de réalisation peuvent être conçus, adaptés et mis en oeuvre explicitement dans des logiciels ou dans du matériel programmé, ou implicitement dans du matériel standard RAKE soit dans le RAKE (e.g. au niveau du doigt de contact) soit à l'extérieur du RAKE (e.g. au niveau de l'utilisateur ou du symbole de sous-canal).
PCT/US2006/036018 2005-09-23 2006-09-15 Elimination d'interference iterative au moyen de ponderations de retroaction mixtes ou de tailles de pas de stabilisation WO2007038018A2 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US11/233,636 US8761321B2 (en) 2005-04-07 2005-09-23 Optimal feedback weighting for soft-decision cancellers
US11/233,636 2005-09-23
US73620405P 2005-11-15 2005-11-15
US60/736,204 2005-11-15
US11/451,688 US7702048B2 (en) 2005-11-15 2006-06-13 Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US11/451,688 2006-06-13

Publications (2)

Publication Number Publication Date
WO2007038018A2 WO2007038018A2 (fr) 2007-04-05
WO2007038018A3 true WO2007038018A3 (fr) 2007-12-13

Family

ID=37900239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/036018 WO2007038018A2 (fr) 2005-09-23 2006-09-15 Elimination d'interference iterative au moyen de ponderations de retroaction mixtes ou de tailles de pas de stabilisation

Country Status (1)

Country Link
WO (1) WO2007038018A2 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6714585B1 (en) * 1999-06-25 2004-03-30 Ericsson Inc. Rake combining methods and apparatus using weighting factors derived from knowledge of spreading spectrum signal characteristics
US20040196892A1 (en) * 1999-10-19 2004-10-07 Interdigital Technology Corporation Parallel interference cancellation receiver for multiuser detection CDMA signals
US20050163196A1 (en) * 1999-08-31 2005-07-28 Currivan Bruce J. Cancellation of burst noise in a communication system with application to S-CDMA
US20050180364A1 (en) * 2002-09-20 2005-08-18 Vijay Nagarajan Construction of projection operators for interference cancellation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6714585B1 (en) * 1999-06-25 2004-03-30 Ericsson Inc. Rake combining methods and apparatus using weighting factors derived from knowledge of spreading spectrum signal characteristics
US20050163196A1 (en) * 1999-08-31 2005-07-28 Currivan Bruce J. Cancellation of burst noise in a communication system with application to S-CDMA
US20040196892A1 (en) * 1999-10-19 2004-10-07 Interdigital Technology Corporation Parallel interference cancellation receiver for multiuser detection CDMA signals
US20050180364A1 (en) * 2002-09-20 2005-08-18 Vijay Nagarajan Construction of projection operators for interference cancellation

Also Published As

Publication number Publication date
WO2007038018A2 (fr) 2007-04-05

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