SE9701539D0 - Apparatus and method for filtering a received signal - Google Patents

Apparatus and method for filtering a received signal

Info

Publication number
SE9701539D0
SE9701539D0 SE9701539A SE9701539A SE9701539D0 SE 9701539 D0 SE9701539 D0 SE 9701539D0 SE 9701539 A SE9701539 A SE 9701539A SE 9701539 A SE9701539 A SE 9701539A SE 9701539 D0 SE9701539 D0 SE 9701539D0
Authority
SE
Sweden
Prior art keywords
received signal
signal
pulses
filter
filtering
Prior art date
Application number
SE9701539A
Other languages
Swedish (sv)
Other versions
SE9701539L (en
SE521527C2 (en
Inventor
Richard A Dickens
Daniel Joseph Terlep
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of SE9701539D0 publication Critical patent/SE9701539D0/en
Publication of SE9701539L publication Critical patent/SE9701539L/en
Publication of SE521527C2 publication Critical patent/SE521527C2/en

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

An apparatus (10) including a compressive receiver (22) detecting the received signal and a frequency agile filter (60) responsive to the compressive receiver (22). The frequency agile filter (60) filters the received signal. A method including the steps of detecting the received signal (204), downconverting the received signal to produce a downconverted signal (206), performing a dispersive delay line calculation on the downconverted signal to produce a pulsed signal having a plurality of pulses (208), comparing at least some of the pulses within the pulsed signal to a threshold (210), measuring the time delay of the pulses that exceed the threshold over a predetermined time interval (212), determining a filter frequency based on the time delay of the pulses (214), and filtering the received signal at the filter frequency (216).
SE9701539A 1995-10-27 1997-04-24 Apparatus and method for filtering a received signal SE521527C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54941095A 1995-10-27 1995-10-27
PCT/US1996/013485 WO1997015988A1 (en) 1995-10-27 1996-08-20 An apparatus and method for filtering a received signal

Publications (3)

Publication Number Publication Date
SE9701539D0 true SE9701539D0 (en) 1997-04-24
SE9701539L SE9701539L (en) 1997-08-27
SE521527C2 SE521527C2 (en) 2003-11-11

Family

ID=24192924

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9701539A SE521527C2 (en) 1995-10-27 1997-04-24 Apparatus and method for filtering a received signal

Country Status (4)

Country Link
JP (1) JPH10512424A (en)
FI (1) FI115681B (en)
SE (1) SE521527C2 (en)
WO (1) WO1997015988A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1962432A1 (en) 2007-02-22 2008-08-27 Semiconductor Ideas to The Market (ItoM) BV FM receiver

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247939A (en) * 1978-11-09 1981-01-27 Sanders Associates, Inc. Spread spectrum detector
US5079735A (en) * 1990-02-20 1992-01-07 Sanders Associates, Inc. High-dynamic-range compressive receiver
US5179730A (en) * 1990-03-23 1993-01-12 Rockwell International Corporation Selectivity system for a direct conversion receiver

Also Published As

Publication number Publication date
FI972747A (en) 1997-06-25
SE9701539L (en) 1997-08-27
FI115681B (en) 2005-06-15
JPH10512424A (en) 1998-11-24
WO1997015988A1 (en) 1997-05-01
FI972747A0 (en) 1997-06-25
SE521527C2 (en) 2003-11-11

Similar Documents

Publication Publication Date Title
ES8403019A1 (en) Method and apparatus for measuring ultrasonic attenuation characteristics.
IT8223827A0 (en) METHOD AND APPARATUS FOR DETERMINING AN AGREEMENT BETWEEN AN ANALYSIS SIGNAL AND AT LEAST ONE REFERENCE SIGNAL.
KR860005497A (en) Method and apparatus for processing super-coded numeric signal.
DE69702904D1 (en) METHOD AND DEVICE FOR DISTANCE MEASUREMENT
ATE170346T1 (en) APPARATUS AND METHOD FOR TUNING A MIXER FILTER
FR2724029B1 (en) METHOD FOR DETECTING ACOUSTIC SIGNALS FROM TORPEDOS
SE9701539L (en) Apparatus and method for filtering a received signal
IE822823L (en) Data detection
GB1477667A (en) Circuit arrangement for producing a pulse sequence corresponding to the foetal cardiac pulses
CA2203548A1 (en) An apparatus and method for filtering a received signal
JPS5396797A (en) Self-diagnosis apparatus of radar receiving system
EP0027343A1 (en) A voice detector
JPS5754876A (en) Interference level setting circuit in removal of interfering wave
NL146672B (en) SYNTHETIC SPEECH TRANSMISSION SYSTEM.
SU959294A1 (en) Receiver of multifrequency signals
EP0235985A3 (en) Data processing
GB2011618B (en) Method for acoustic signal detection
JPS55154459A (en) Flaw detecting method of steel product
JPS57155851A (en) Method and apparatus for ultrasonic wave reception
FR2663489B1 (en) METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.
JPH0622228Y2 (en) Partial discharge detector
GB1532103A (en) Method and apparatus for translating multiple frequency signalling
JPS5373159A (en) Vehicle detecting method of parking meters and apparatus for the same
FR2682252B1 (en) SIGNAL PROCESSING METHOD AND SOUND RECEIVING DEVICE USING THE SAME.
JPS57114846A (en) Detecting apparatus for abnormal sound

Legal Events

Date Code Title Description
NUG Patent has lapsed