BRPI0502536A - aparelho para detectar um desvio de freqüencia de portadora em sistema receptor digital e processo do mesmo - Google Patents

aparelho para detectar um desvio de freqüencia de portadora em sistema receptor digital e processo do mesmo

Info

Publication number
BRPI0502536A
BRPI0502536A BRPI0502536A BRPI0502536A BR PI0502536 A BRPI0502536 A BR PI0502536A BR PI0502536 A BRPI0502536 A BR PI0502536A BR PI0502536 A BRPI0502536 A BR PI0502536A
Authority
BR
Brazil
Prior art keywords
carrier frequency
detecting
frequency offset
digital receiver
correlation values
Prior art date
Application number
Other languages
English (en)
Inventor
Jung-Won Kwak
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BRPI0502536A publication Critical patent/BRPI0502536A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0046—Open loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0065—Frequency error detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements
    • H04L2027/0085—Signalling arrangements with no special signals for synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

"APARELHO PARA DETECTAR UM DESVIO DE FREQüêNCIA DE PORTADORA EM SISTEMA RECEPTOR DIGITAL E PROCESSO DO MESMO". A presente invenção refere-se a um aparelho para detectar um desvio de freqüência de portadora de um receptor digital e a um processo para detectar um desvio de freqüência de portadora do mesmo. O aparelho para detectar um desvio de freqüência de portadora inclui correladores para calcular valores de correlação individuais pelo emprego de seqüências de pseudo-ruído, pelo menos uma unidade de geração de sinal conjugado para gerar um número complexo conjugado para cada um dos valores de correlação, pelo menos um multiplicador para multiplicar os números complexos conjugados individuais com os valores de correlação individuais dos correladores vizinhos; um somador para somar os valores multiplicados, e um extrator de fase para extrair um componente de fase de um valor de saída do somador e emitir o componente de fase como um desvio de freqüência de portadora. Por conseguinte, o desvio de freqüência de portadora é detectado mesmo no caso de um sinal de comando não poder ser empregado devido a um ambiente de canal deficiente.
BRPI0502536 2004-06-23 2005-06-23 aparelho para detectar um desvio de freqüencia de portadora em sistema receptor digital e processo do mesmo BRPI0502536A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20040047147A KR100555661B1 (ko) 2004-06-23 2004-06-23 디지털 방송 수신 시스템의 반송파 주파수 오프셋검출장치 및 그의 주파수 오프셋 검출방법

Publications (1)

Publication Number Publication Date
BRPI0502536A true BRPI0502536A (pt) 2006-06-27

Family

ID=36617246

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0502536 BRPI0502536A (pt) 2004-06-23 2005-06-23 aparelho para detectar um desvio de freqüencia de portadora em sistema receptor digital e processo do mesmo

Country Status (6)

Country Link
US (1) US20050286614A1 (pt)
JP (1) JP4064981B2 (pt)
KR (1) KR100555661B1 (pt)
CN (1) CN1722716A (pt)
BR (1) BRPI0502536A (pt)
CA (1) CA2510563A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100747584B1 (ko) * 2006-03-03 2007-08-08 엘지전자 주식회사 동기 검출 장치 및 동기 검출 방법
KR100928825B1 (ko) 2007-12-13 2009-11-27 한국전자통신연구원 복수의 상관기들을 이용한 주파수 옵셋 추정 장치 및 그방법
CN103701740B (zh) * 2014-01-08 2017-06-23 北京华力创通科技股份有限公司 卫星移动通信中载波跟踪的方法及装置
CN106093624B (zh) * 2016-05-31 2018-11-23 西安空间无线电技术研究所 一种多通道数字相关器性能测试方法
US11677480B2 (en) * 2021-04-13 2023-06-13 Samsung Electronics Co., Ltd. Systems, methods, and apparatus for symbol timing recovery based on machine learning

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1070580A (ja) 1996-05-31 1998-03-10 Matsushita Electric Ind Co Ltd Ｖｓｂ復調器
US6567800B1 (en) * 1998-10-01 2003-05-20 At&T Corp. System and method for searching information stored on a network
US6421371B1 (en) * 1998-11-17 2002-07-16 Ericsson Inc. Modulation sequence synchronization methods and apparatus employing partial sequence correlation
KR20000051268A (ko) * 1999-01-20 2000-08-16 김영환 디지털 텔레비전의 비동기/동기 자동 이득제어장치
US6363102B1 (en) * 1999-04-23 2002-03-26 Qualcomm Incorporated Method and apparatus for frequency offset correction
KR100320478B1 (ko) * 2000-01-12 2002-01-12 구자홍 디지털 텔레비전의 동기 신호 검출 장치
JP3779267B2 (ja) * 2000-07-11 2006-05-24 サムスン エレクトロニクス カンパニー リミテッド 単一キャリアデジタルテレビ放送システムのための反復−ｐｎ１０２３−シーケンス反響−消去参照信号
JP3831229B2 (ja) * 2001-10-31 2006-10-11 富士通株式会社 伝搬路特性推定装置
US7120191B2 (en) * 2001-12-12 2006-10-10 Nokia Corporation Method and apparatus for acquiring a ranging signal of a positioning system

Also Published As

Publication number Publication date
JP4064981B2 (ja) 2008-03-19
CA2510563A1 (en) 2005-12-23
KR100555661B1 (ko) 2006-03-03
US20050286614A1 (en) 2005-12-29
CN1722716A (zh) 2006-01-18
JP2006014335A (ja) 2006-01-12
KR20050122018A (ko) 2005-12-28

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 5A, 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2158 DE 15/05/2012.