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Title: Transmit-reference methods in software defined radio platforms for communication in harsh propagation environments and systems thereof

Patent ·
OSTI ID:1171646
;

A method for adaptive Radio Frequency (RF) jamming according to one embodiment includes dynamically monitoring a RF spectrum; detecting any undesired signals in real time from the RF spectrum; and sending a directional countermeasure signal to jam the undesired signals. A method for adaptive Radio Frequency (RF) communications according to another embodiment includes transmitting a data pulse in a RF spectrum; and transmitting a reference pulse separated by a predetermined period of time from the data pulse; wherein the data pulse is modulated with data, wherein the reference pulse is unmodulated. A method for adaptive Radio Frequency (RF) communications according to yet another embodiment includes receiving a data pulse in a RF spectrum; and receiving a reference pulse separated in time from the data pulse, wherein the data pulse is modulated with data, wherein the reference pulse is unmodulated; and demodulating the pulses.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
8,971,441
Application Number:
12/795,571
OSTI ID:
1171646
Resource Relation:
Patent File Date: 2010 Jun 07
Country of Publication:
United States
Language:
English

References (42)

Delay-hopped transmitted-reference RF communications conference January 2002
Delay hopped transmitted reference experimental results conference January 2002
System for countermeasures patent February 1962
Adaptive antenna array patent October 1988
Integrated GPS/interference location system patent August 1999
Method and apparatus for performing frequency hopping adaptation patent September 2000
Interference detection for spread spectrum systems patent October 2000
Signal recognizer for communications signals patent February 2004
UWB communication receiver feedback loop patent December 2007
System and method for ultra-wideband (UWB) communication transceiver patent April 2009
Apparatus, method and computer program product for providing automated backup to TDM network connections over an IP network patent January 2012
Multiple frequency band multiple standard transceiver patent July 2012
Wireless communication system compensating for interference and related methods patent January 2013
Cat litter box liner with an absorbent scratch resistant pad patent January 2013
Method and apparatus relating to spectrum sensing patent August 2013
System and method for adapting RF transmissions to mitigate the effects of certain interferences patent-application October 2002
Use of chip repetition to produce a flexible bandwidth DS-CDMA system patent-application November 2002
Method and device for estimating sir of a signal patent-application July 2004
Multi-pulse multi-delay (MPMD) multiple access modulation for UWB patent-application October 2004
GPS Enabled emergency messaging system patent-application September 2007
M-ARY orthogonal coded/balanced UWB transmitted reference systems patent-application October 2007
Wireless data transmission method and apparatus patent-application December 2007
Open wireless architecture virtualization system for wireless mobile terminal device patent-application June 2008
Packet routing based on application source patent-application October 2008
Regenerative jammer with multiple jamming algorithms patent-application March 2009
Multi-pulse frequency shifted (MPFS) multiple access modulation for ultra wideband patent-application March 2009
Common communication terminal architecture and method patent-application March 2009
Stand alone emergency signal device housed in cell phone patent-application March 2009
Method for intrusion detection via changes in the presence of short range RF devices patent-application June 2009
Method and apparatus for heavy-tailed waveform generation used for communication disruption patent-application June 2009
Communications and data link jammer incorporating fiber-optic delay line technology patent-application August 2009
Multi-band jammer patent-application September 2009
Impulse ultra-wideband radio communication system patent-application October 2009
Self-positioning access points patent-application December 2009
Jammer detection with adaptive fast attack/slow release response for continuous and burst mode patent-application February 2010
Method and apparatus for excision of narrowband interference signals patent-application June 2010
Network service for modularly constructing a software defined radio patent-application July 2010
Communication terminal patent-application November 2010
Apparatus and method for dynamic scaling of ADC sampling rate to avoid receiver interference patent-application December 2010
High dynamic range receiver front-end with q-enhancement patent-application December 2010
Radioterminals and operating methods that receive multiple measures of information from multiple sources patent-application August 2011
Interference detection, characterization and location in a wireless communications or broadcast system patent-application June 2012

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