AR007405A1 - Metodo y dispositivo para demodular digitalmente una senal de frecuencia modulada - Google Patents

Metodo y dispositivo para demodular digitalmente una senal de frecuencia modulada

Info

Publication number
AR007405A1
AR007405A1 ARP970102656A ARP970102656A AR007405A1 AR 007405 A1 AR007405 A1 AR 007405A1 AR P970102656 A ARP970102656 A AR P970102656A AR P970102656 A ARP970102656 A AR P970102656A AR 007405 A1 AR007405 A1 AR 007405A1
Authority
AR
Argentina
Prior art keywords
signal
channel
digitized
carrier signal
digital
Prior art date
Application number
ARP970102656A
Other languages
English (en)
Original Assignee
Symmetricom 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 Symmetricom Inc filed Critical Symmetricom Inc
Publication of AR007405A1 publication Critical patent/AR007405A1/es

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

Un método y dispositivo para demodular digitalmente una senal de frecuencia modulada utilizando un procesamiento de senal digital que extrae una senalportadora de senales de canal digitalizadas, multiplicando la senal de canal digital por su senalportadora extraída, y luego filtrando la senal portadorapara producir la senal demodulada. La técnica DSP primero convierte en reducción un grupo de canales hasta una banda base que son luego procesadas através de un convertidor analógico digital para producir una senal compuesta digitalizada. Un banco de filtros pasabanda, típicamente basados enprocesadores FFT, aplicados a la senal compuesta producen un grupo de senales de canal digitalizadas. La senal de canal digitalizada es luego demoduladamediante la recuperación de una senal portadora mediante el filtrado digital de, por ejemplo, utilizando un filtro pasabanda Hilbert, la senal de canal yfiltrando digitalmente el producto de la senal portadora y la senal de canalpara recuperar las senales de voz de modulación.
ARP970102656A 1996-06-17 1997-06-18 Metodo y dispositivo para demodular digitalmente una senal de frecuencia modulada AR007405A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/664,705 US5764704A (en) 1996-06-17 1996-06-17 DSP implementation of a cellular base station receiver

Publications (1)

Publication Number Publication Date
AR007405A1 true AR007405A1 (es) 1999-10-27

Family

ID=24667115

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP970102656A AR007405A1 (es) 1996-06-17 1997-06-18 Metodo y dispositivo para demodular digitalmente una senal de frecuencia modulada

Country Status (10)

Country Link
US (1) US5764704A (es)
EP (1) EP0906656B1 (es)
JP (1) JP2001511319A (es)
AR (1) AR007405A1 (es)
AU (1) AU3398497A (es)
CA (1) CA2258009C (es)
DE (1) DE69703290T2 (es)
TW (1) TW327711B (es)
WO (1) WO1997049171A2 (es)
ZA (1) ZA975328B (es)

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US7003094B2 (en) * 2000-12-07 2006-02-21 Agere Systems Inc. Adaptive interference cancellation for ADSL
US9052374B2 (en) 2001-07-18 2015-06-09 Fast Location.Net, Llc Method and system for processing positioning signals based on predetermined message data segment
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US6529160B2 (en) 2001-07-18 2003-03-04 Fast Location.Net, Llc Method and system for determining carrier frequency offsets for positioning signals
US6515620B1 (en) 2001-07-18 2003-02-04 Fast Location.Net, Llc Method and system for processing positioning signals in a geometric mode
US6882309B2 (en) 2001-07-18 2005-04-19 Fast Location. Net, Llc Method and system for processing positioning signals based on predetermined message data segment
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JP4843288B2 (ja) * 2005-09-29 2011-12-21 株式会社東芝 Ａｍ／ｆｍ混合信号処理装置
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8392176B2 (en) * 2006-04-10 2013-03-05 Qualcomm Incorporated Processing of excitation in audio coding and decoding
US7937106B2 (en) 2006-04-24 2011-05-03 ParkerVision, Inc, Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US8315336B2 (en) 2007-05-18 2012-11-20 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment
CN101146307B (zh) * 2006-12-14 2010-12-08 中兴通讯股份有限公司 一种频谱扫描装置及其方法
WO2009005768A1 (en) 2007-06-28 2009-01-08 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
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WO2009145887A1 (en) 2008-05-27 2009-12-03 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
KR20140026458A (ko) 2011-04-08 2014-03-05 파커비전, 인크. Ｒｆ 전력 송신, 변조 및 증폭 시스템들 및 방법들
WO2012167111A2 (en) 2011-06-02 2012-12-06 Parkervision, Inc. Antenna control
US8666331B2 (en) * 2012-02-09 2014-03-04 Broadcom Corporation Cascading baseband processors
KR101488776B1 (ko) * 2013-05-14 2015-02-04 주식회사 에치에프알 클라우드 이동무선 액세스 네트워크에서의 무선신호 감시 방법 및 장치
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Also Published As

Publication number Publication date
ZA975328B (en) 1998-07-27
AU3398497A (en) 1998-01-07
US5764704A (en) 1998-06-09
EP0906656A2 (en) 1999-04-07
WO1997049171A2 (en) 1997-12-24
TW327711B (en) 1998-03-01
JP2001511319A (ja) 2001-08-07
DE69703290T2 (de) 2001-04-05
EP0906656B1 (en) 2000-10-11
DE69703290D1 (de) 2000-11-16
CA2258009A1 (en) 1997-12-24
CA2258009C (en) 2003-05-27
WO1997049171A3 (en) 1998-03-12

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