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

Transmission canceller for wireless local area network repeater Download PDF

Info

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
Application number
PCT/US2004/007708
Other languages
French (fr)
Other versions
WO2004095763A2 (en
Inventor
James A Proctor Jr
Kenneth M Gainey
Original Assignee
Widefi Inc
James A Proctor Jr
Kenneth M Gainey
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, James A Proctor Jr, Kenneth M Gainey 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

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

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 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 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)

Families Citing this family (12)

* 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
US8005513B2 (en) 2006-03-16 2011-08-23 Cellynx, Inc. Cell phone signal booster
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 detecting cancellation signal of transmission leakage signal in radio frequency transmit/receive device
US8687540B2 (en) 2011-06-07 2014-04-01 Qualcomm Incorporated Echo cancellation repeater using an inserted pilot with gain-based power level control scheme
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
US10840958B2 (en) 2018-08-21 2020-11-17 Skyworks Solutions, Inc. Radio frequency communication systems with discrete time cancellation for coexistence management
US11558079B2 (en) 2019-01-15 2023-01-17 Skyworks Solutions, Inc. Radio frequency communication systems with interference cancellation for coexistence
WO2021061792A1 (en) 2019-09-27 2021-04-01 Skyworks Solutions, Inc. Mixed signal low noise interference cancellation
US11784419B2 (en) 2019-09-27 2023-10-10 Skyworks Solutions, Inc. Antenna-plexer for 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

Also Published As

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

Similar Documents

Publication Publication Date Title
Zhang et al. Wideband dual-injection path self-interference cancellation architecture for full-duplex transceivers
US6567649B2 (en) Method and apparatus for transmitter noise cancellation in an RF communications system
WO2004095763A3 (en) Transmission canceller for wireless local area network repeater
WO2007102897A3 (en) Quasi-linear interference cancellation for wireless communication
EP2088682A3 (en) Cancellation of pilot and unwanted traffic signals in a CDMA system
WO2007058754A3 (en) An iterative interference canceller for wireless multiple-access systems employing closed loop transmit diversity
ATE402527T1 (en) WLAN REPEATER WITH AUTOMATIC GAIN CONTROL FOR EXTENDED NETWORK COVERAGE
ATE542305T1 (en) ADAPTIVE FILTER FOR TRANSMIT LEAK SIGNAL BLOCKING
CA2439697A1 (en) Interference suppression methods for 802.11
AU5513599A (en) Adaptive receiver for multipach propagation in a cdma communication system
AU6221700A (en) Cdma multiple access interference cancellation using signal estimation
NO20084108L (en) The mobile station
MY148201A (en) Apparatus and method capable of improved coexistence of multiple wireless communication techniques
AU5134299A (en) Method and system for providing personal base station communications
TW200709593A (en) RF transceiver having adaptive modulation
TW200511748A (en) Bias error compensated initial transmission power control for data services
WO2006115459A3 (en) Joint detector in a code division multiple access radio receiver
WO2002028120A3 (en) Mode switching in adaptive array communications systems
TW200640202A (en) Apparatus and method of canceling interference
ATE366501T1 (en) NETWORK ECHO CANCELLATION IN MOBILE STATIONS
EP2290833A3 (en) Signal acquisition in peer-to-peer spread-spectrum communications
WO2000004659A3 (en) Radio communications unit
WO2005109664A3 (en) Frequency division multiple access wireless communication with hierarchical preamble
SE9801443L (en) Device and method for wireless data transmission
WO2007038017A3 (en) Inter-symbol interference cancellation for wireless multiple access

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2006240769

Country of ref document: US

Ref document number: 10551895

Country of ref document: US

122 Ep: pct application non-entry in european phase
WWP Wipo information: published in national office

Ref document number: 10551895

Country of ref document: US