WO2007102897A3 - Quasi-linear interference cancellation for wireless communication - Google Patents

Quasi-linear interference cancellation for wireless communication Download PDF

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Publication number
WO2007102897A3
WO2007102897A3 PCT/US2006/061163 US2006061163W WO2007102897A3 WO 2007102897 A3 WO2007102897 A3 WO 2007102897A3 US 2006061163 W US2006061163 W US 2006061163W WO 2007102897 A3 WO2007102897 A3 WO 2007102897A3
Authority
WO
WIPO (PCT)
Prior art keywords
samples
transform
symbols
scaled
interference cancellation
Prior art date
Application number
PCT/US2006/061163
Other languages
French (fr)
Other versions
WO2007102897A2 (en
Inventor
Brian Clarke Banister
Original Assignee
Qualcomm Inc
Brian Clarke Banister
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 Qualcomm Inc, Brian Clarke Banister filed Critical Qualcomm Inc
Priority to EP06850184A priority Critical patent/EP1952547A2/en
Priority to JP2008542514A priority patent/JP5059776B2/en
Priority to KR1020087015080A priority patent/KR101154667B1/en
Priority to CN200680051380.5A priority patent/CN101361284B/en
Publication of WO2007102897A2 publication Critical patent/WO2007102897A2/en
Publication of WO2007102897A3 publication Critical patent/WO2007102897A3/en

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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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • 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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • H04B2001/70935—Matched filter type using a bank of matched fileters, e.g. Fast Hadamard Transform

Abstract

Techniques for performing interference cancellation in a wireless (eg, CDMA) communication system are described. For a single-sector interference canceller, received samples are processed (e.g., despread) to isolate a signal from a transmitter (e.g., a base station) and obtain input samples. The input samples are transformed based on a first transform (e.g., a fast Hadamard transform) (416) to obtain received symbols for multiple orthogonal channels (e.g., Walsh bins) . The received symbols for the multiple orthogonal channels are scaled with multiple gains (440) to obtain scaled symbols. The gains may be related to the inverses of the power estimates for the orthogonal channels. The scaled symbols are transformed based on a second transform (e.g., an inverse fast Hadamard transform) (442) to obtain output samples, which are processed (e.g., spread) to obtain interference-canceled samples having the signal from the transmitter suppressed.
PCT/US2006/061163 2005-11-21 2006-11-21 Quasi-linear interference cancellation for wireless communication WO2007102897A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06850184A EP1952547A2 (en) 2005-11-21 2006-11-21 Quasi-linear interference cancellation for wireless communication
JP2008542514A JP5059776B2 (en) 2005-11-21 2006-11-21 Quasi-linear interference cancellation for wireless communications
KR1020087015080A KR101154667B1 (en) 2005-11-21 2006-11-21 Quasi-linear interference cancellation for wireless communication
CN200680051380.5A CN101361284B (en) 2005-11-21 2006-11-21 Almost linear interference for radio communication is eliminated

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/285,510 US7881412B2 (en) 2005-11-21 2005-11-21 Quasi-linear interference cancellation for wireless communication
US11/285,510 2005-11-21

Publications (2)

Publication Number Publication Date
WO2007102897A2 WO2007102897A2 (en) 2007-09-13
WO2007102897A3 true WO2007102897A3 (en) 2007-11-29

Family

ID=38053484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/061163 WO2007102897A2 (en) 2005-11-21 2006-11-21 Quasi-linear interference cancellation for wireless communication

Country Status (6)

Country Link
US (2) US7881412B2 (en)
EP (1) EP1952547A2 (en)
JP (1) JP5059776B2 (en)
KR (1) KR101154667B1 (en)
CN (1) CN101361284B (en)
WO (1) WO2007102897A2 (en)

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US8498324B2 (en) * 2009-10-23 2013-07-30 Broadcom Corporation Method and system for interference suppression between multipath signals utilizing a programmable interface suppression module
US8498321B2 (en) * 2009-09-15 2013-07-30 Broadcom Corporation Method and system for optimizing programmable interference suppression
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US20110105037A1 (en) * 2009-10-30 2011-05-05 Qualcomm Incorporated Methods and systems for interference cancellation in multi-mode coexistence modems
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US8472534B2 (en) * 2009-12-21 2013-06-25 Astrapi Corporation Telecommunication signaling using nonlinear functions
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US20160014619A1 (en) * 2014-07-09 2016-01-14 Qualcomm Incorporated Multiple cell joint detection and interference cancellation
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Also Published As

Publication number Publication date
WO2007102897A2 (en) 2007-09-13
US20070116099A1 (en) 2007-05-24
JP5059776B2 (en) 2012-10-31
US7881412B2 (en) 2011-02-01
EP1952547A2 (en) 2008-08-06
KR20080077218A (en) 2008-08-21
US8064496B2 (en) 2011-11-22
KR101154667B1 (en) 2012-06-11
JP2009516991A (en) 2009-04-23
US20080130714A1 (en) 2008-06-05
CN101361284B (en) 2015-10-07
CN101361284A (en) 2009-02-04

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