Digital suppression of transmitter intermodulation in receiver

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9473200
APP PUB NO 20150263782A1
SERIAL NO

14728095

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Systems and methods for suppressing transmitter noise in a receive band of a co-located receiver that are suitable for wideband applications are disclosed. In one embodiment, a transmitter is configured to upconvert and amplify a digital transmit signal to provide an analog radio frequency transmit signal at an output of the transmitter that includes a desired signal in a transmit band of the transmitter and transmitter noise in a receive band of a main receiver. The main receiver is configured to amplify, downconvert, and digitize an analog radio frequency receive signal to provide a digital receive signal. The digital feedforward transmit noise cancellation subsystem is configured to process the digital transmit signal to generate a digital transmitter noise cancellation signal that is representative of the transmitter noise in the receive band and is subtracted from the digital receive signal to thereby provide a compensated digital receive signal.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)STOCKHOLM12205

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dalipi, Spendim Sollentuna, SE 10 86
Thorebäck, Lars Johan Sundbyberg, SE 9 45
Wyville, Mark Ottawa, CA 18 144

Cited Art Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (8)
8170487 Baseband transmitter self-jamming and intermodulation cancellation device 26 2006
2008/0039,045 INTERMODULATION DISTORTION DETECTION AND MITIGATION 41 2007
* 8098779 Interference detection and mitigation 11 2008
8880010 Dual-loop transmit noise cancellation 5 2009
2011/0170,473 USE OF RF REFERENCE IN A DIGITAL BASEBAND INTERFERENCE CANCELLATION REPEATER 20 2010
8804871 Non-linear adaptive scheme for cancellation of transmit out of band emissions 5 2011
2012/0140,860 NON-LINEAR ADAPTIVE SCHEME FOR CANCELLATION OF TRANSMIT OUT OF BAND EMISSIONS 30 2011
8767869 Joint linear and non-linear cancellation of transmit self-jamming interference 18 2012
 
COMMSCOPE TECHNOLOGIES LLC (1)
6683495 Reduced architecture for multibranch feedforward power amplifier linearizers 14 2001
 
CISCO TECHNOLOGY, INC. (2)
8218677 Transmitter characterization for digital pre-distortion using offset preamble subcarriers 11 2009
2010/0220,810 Transmitter Characterization for Digital Pre-Distortion Using Offset Preamble Subcarriers 8 2009
 
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) (11)
5386198 Linear amplifier control 53 1993
* 8755758 Technique for suppressing noise in a transmitter device 5 2009
2011/0235,553 Technique for Suppressing Noise in a Transmitter Device 7 2009
8379699 Spread spectrum pilot signals in an electronic duplexer 6 2011
2012/0230,368 Spread Spectrum Pilot Signals in an Electronic Duplexer 5 2011
8855175 Low complexity all-digital PIM compensator 8 2013
* 8995932 Transmitter noise suppression in receiver 7 2013
2014/0194,071 TRANSMITTER NOISE SUPPRESSION IN RECEIVER 11 2013
* 9077440 Digital suppression of transmitter intermodulation in receiver 4 2013
2014/0194,073 DIGITAL SUPPRESSION OF TRANSMITTER INTERMODULATION IN RECEIVER 12 2013
2015/0180,522 TRANSMITTER NOISE SUPPRESSION IN RECEIVER 2 2015
 
BLACKBERRY LIMITED (1)
7702295 Frequency agile duplex filter 21 2006
 
SAMSUNG ELECTRONICS CO., LTD. (2)
* 6091296 Single loop feedforward amplifier for use in an RF transmitter and method of operation 11 1998
* 6188732 Digital feedforward amplifier for use in an RF transmitter and method of operation 30 1998
 
ANDREW LLC (1)
7595689 Predistorter 10 1999
 
HYPRES, INC. (1)
8260143 Digital radio frequency tranceiver system and method 17 2009
 
RPX CLEARINGHOUSE LLC (1)
* 8385871 Frequency agile filter using a digital filter and bandstop filtering 33 2009
 
WSOU INVESTMENTS, LLC (1)
* 5994957 Feed forward amplifier improvement 13 1997
 
RADIO FREQUENCY SYSTEMS, INC. (1)
5455537 Feed forward amplifier 40 1994
 
S. AQUA SEMICONDUCTOR, LLC (1)
6081549 Phase correction method and apparatus for spectrum spread wireless communication receiver 17 1998
 
INTEL CORPORATION (3)
6144255 Feedforward amplification system having mask detection compensation 31 1998
6556076 Feed forward amplifier with amplifier stage failure detection using pilot tones 9 2001
2004/0251,961 Feed forward amplifier employing positive feedback pilot generation 6 2004
 
L-3 COMMUNICATIONS INTEGRATED SYSTEMS L.P. (1)
* 5444864 Method and apparatus for cancelling in-band energy leakage from transmitter to receiver 107 1992
 
GOOGLE TECHNOLOGY HOLDINGS LLC (3)
2004/0203,458 Method and apparatus to reduce interference in a communication device 52 2002
* 8917792 Method and apparatus for the cancellation of intermodulation and harmonic distortion in a baseband receiver 4 2012
2014/0161,159 METHOD AND APPARATUS FOR THE CANCELLATION OF INTERMODULATION AND HARMONIC DISTORTION IN A BASEBAND RECEIVER 7 2012
 
MEDIATEK SINGAPORE PTE. LTD. (2)
8320866 Integrated circuits, communication units and methods of cancellation of intermodulation distortion 10 2010
8320868 Integrated circuits, communication units and methods of cancellation of intermodulation distortion 15 2010
* Cited By Examiner

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