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WO2004095763A3 - Transmission canceller for wireless local area network repeater - Google Patents

Transmission canceller for wireless local area network repeater Download PDF

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Publication number
WO2004095763A3
WO2004095763A3 PCT/US2004/007708 US2004007708W WO2004095763A3 WO 2004095763 A3 WO2004095763 A3 WO 2004095763A3 US 2004007708 W US2004007708 W US 2004007708W WO 2004095763 A3 WO2004095763 A3 WO 2004095763A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
canceller
sample
coupler
area network
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.)
Ceased
Application number
PCT/US2004/007708
Other languages
French (fr)
Other versions
WO2004095763A2 (en
Inventor
James A Proctor Jr
Kenneth M Gainey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Widefi Inc
Original Assignee
Widefi 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
Application filed by Widefi Inc filed Critical Widefi Inc
Priority to US10/551,895 priority Critical patent/US8027642B2/en
Publication of WO2004095763A2 publication Critical patent/WO2004095763A2/en
Publication of WO2004095763A3 publication Critical patent/WO2004095763A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15564—Relay station antennae loop interference reduction
    • H04B7/15585—Relay station antennae loop interference reduction by 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A frequency translating repeater (200) for use in a wireless local area network includes a cancellation unit. Canceller (402) is controlled by control (401) to provide an injection signal for canceling leakage in a receive signal path. Reference coupler (403) provides a reference signal from the transmit signal, injection coupler (404) injects a correction signal, and sample coupler (405) provides a sample for feedback. A processor (510) receives the sample signal through a detector (415). Although the present invention is intended for a frequency translating repeater, it has broad applications in radio transceivers in general. One specific application is with frequency division duplex (FDD) handsets or base stations utilizing CDMA technologies such as W-CDMA and IS-2000 or 1XEV-DV/DO.
PCT/US2004/007708 2003-04-07 2004-04-06 Transmission canceller for wireless local area network repeater Ceased WO2004095763A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/551,895 US8027642B2 (en) 2004-04-06 2004-04-06 Transmission canceller for wireless local area network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46057103P 2003-04-07 2003-04-07
US60/460,571 2003-04-07

Publications (2)

Publication Number Publication Date
WO2004095763A2 WO2004095763A2 (en) 2004-11-04
WO2004095763A3 true WO2004095763A3 (en) 2005-01-27

Family

ID=33310725

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/007708 Ceased WO2004095763A2 (en) 2003-04-07 2004-04-06 Transmission canceller for wireless local area network repeater

Country Status (1)

Country Link
WO (1) WO2004095763A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8005513B2 (en) 2006-03-16 2011-08-23 Cellynx, Inc. Cell phone signal booster

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7701844B2 (en) 2005-02-09 2010-04-20 Interdigital Technology Corporation Method and apparatus for recognizing radio link failures associated with HSUPA and HSDPA channels
US8364092B2 (en) 2005-04-14 2013-01-29 Ecole De Technologie Superieure Balanced active and passive duplexers
JP4242397B2 (en) 2006-05-29 2009-03-25 国立大学法人東京工業大学 Wireless communication apparatus and wireless communication method
KR20110094958A (en) 2010-02-18 2011-08-24 엘에스산전 주식회사 Method for Searching Offset Signals of Transmission Leak Signals in Wireless Transceivers
US8687540B2 (en) * 2011-06-07 2014-04-01 Qualcomm Incorporated Echo cancellation repeater using an inserted pilot with gain-based power level control scheme
US10840958B2 (en) 2018-08-21 2020-11-17 Skyworks Solutions, Inc. Radio frequency communication systems with discrete time cancellation for coexistence management
US10855325B2 (en) 2018-08-21 2020-12-01 Skyworks Solutions, Inc. Discrete time cancellation for providing coexistence in radio frequency communication systems
US10840957B2 (en) 2018-08-21 2020-11-17 Skyworks Solutions, Inc. Radio frequency communication systems with coexistence management based on digital observation data
US11558079B2 (en) 2019-01-15 2023-01-17 Skyworks Solutions, Inc. Radio frequency communication systems with interference cancellation for coexistence
WO2021061834A1 (en) 2019-09-27 2021-04-01 Skyworks Solutions, Inc. Antenna-plexer for interference cancellation
WO2021061792A1 (en) 2019-09-27 2021-04-01 Skyworks Solutions, Inc. Mixed signal low noise interference cancellation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373503A (en) * 1993-04-30 1994-12-13 Information Technology, Inc. Group randomly addressed polling method
US6377640B2 (en) * 1997-07-31 2002-04-23 Stanford Syncom, Inc. Means and method for a synchronous network communications system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373503A (en) * 1993-04-30 1994-12-13 Information Technology, Inc. Group randomly addressed polling method
US6377640B2 (en) * 1997-07-31 2002-04-23 Stanford Syncom, Inc. Means and method for a synchronous network communications system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8005513B2 (en) 2006-03-16 2011-08-23 Cellynx, Inc. Cell phone signal booster

Also Published As

Publication number Publication date
WO2004095763A2 (en) 2004-11-04

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