US Patent No: 5,303,262

Number of patents in Portfolio can not be more than 2000

Method and apparatus for triggering measurements from a TDMA signal

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Abstract

A measurement apparatus and method for triggering and making analog measurements of radio frequency (RF) bursts in a time domain multiple access communications system. An RF level detector or edge detector triggers an analog sampler which acquires measurement data from a spectrum analyzer or an RF peak detector. A digital signal processor processes the RF burst to detect a known bit sequence and calculates a timing relationship between the triggering of measurement samples and transmitted data bits in the RF burst. A host processor uses the calculated timing relationship to identify and analyze the measurement data pertaining to desired measurements of the RF burst.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
AGILENT TECHNOLOGIES, INC.PALO ALTO, CA4666

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnson, Matthew Shermansdale, PA 63 112

Cited Art

Patent Info (Count) # Cites Year
 
AGILENT TECHNOLOGIES, INC. (2)
5,001,724 Method and apparatus for measuring phase accuracy and amplitude profile of a continuous-phase-modulated signal 36 1989
5,187,719 Method and apparatus for measuring modulation accuracy 44 1990
 
AMPEX CORPORATION (1)
5,097,486 Pipelined decision feedback decoder 9 1990
 
GENERAL DYNAMICS DECISION SYSTEMS, INC. (1)
5,121,413 Digital pulse processor for determining leading and trailing time-of-arrival 17 1990
 
Sundstrand Corporation (1)
4,805,189 Signal processing system 9 1986

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
CISCO TECHNOLOGY, INC. (9)
7,269,151 System and method for spectrum management of a shared frequency band 35 2002
6,714,605 System and method for real-time spectrum analysis in a communication device 54 2002
7,424,268 System and method for management of a shared frequency band 50 2003
7,254,191 System and method for real-time spectrum analysis in a radio device 9 2003
7,224,752 System and method for real-time spectrum analysis in a communication device 4 2004
7,292,656 Signal pulse detection scheme for use in real-time spectrum analysis 14 2004
7,835,319 System and method for identifying wireless devices using pulse fingerprinting and sequence analysis 1 2007
7,606,335 Signal pulse detection scheme for use in real-time spectrum analysis 2 2007
8,175,539 System and method for management of a shared frequency band 1 2010
 
ANRITSU CORPORATION (2)
5,475,709 Adjacent and alternate channels power measurement apparatus 13 1994
6,046,987 Instrument for measuring leakage power leaking to adjacent channel 6 1998
 
QISDA CORPORATION (2)
6,112,066 Mobile radio set and method of determining the reception field strength 2 1998
6,456,834 Mobile radio set for operation in a TDMA system 0 2000
 
ADVANTEST CORPORATION (1)
6,101,218 Leakage power measurement apparatus and method 16 1997
 
DESIGN TEST & TECHNOLOGY (1)
5,987,392 Wave form peak detector 9 1997
 
INTEL MOBILE COMMUNICATIONS GMBH (1)
7,940,853 Method and device for calculating zero-croccing reference sequences for signal detection of angle-modulated signals based on zero crossings of the received signal 0 2009
 
RACAL INSTRUMENTS WIRELESS SOLUTIONS LIMITED (1)
7,049,805 Radio frequency power measurement 1 2003
 
SAMSUNG ELECTRONICS CO., LTD. (1)
5,970,102 Circuit and method for detecting frequency correction burst in TDMA digital mobile communication system 7 1997