BRPI0413851A - método de gerar sinal embaralhado, método de embaralhar sìmbolos em sistema de transmissão de dados - Google Patents

método de gerar sinal embaralhado, método de embaralhar sìmbolos em sistema de transmissão de dados

Info

Publication number
BRPI0413851A
BRPI0413851A BRPI0413851-1A BRPI0413851A BRPI0413851A BR PI0413851 A BRPI0413851 A BR PI0413851A BR PI0413851 A BRPI0413851 A BR PI0413851A BR PI0413851 A BRPI0413851 A BR PI0413851A
Authority
BR
Brazil
Prior art keywords
frame
pilot symbols
data transmission
transmission system
scrambled signal
Prior art date
Application number
BRPI0413851-1A
Other languages
English (en)
Inventor
Ernest C Chen
Dennis Lai
Tung-Sheng Lin
William C Lindsey
Shamik Maitra
Joseph Santoru
Guangcai Zhou
Original Assignee
Directv Group 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 Directv Group Inc filed Critical Directv Group Inc
Publication of BRPI0413851A publication Critical patent/BRPI0413851A/pt
Publication of BRPI0413851B1 publication Critical patent/BRPI0413851B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6193—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via a satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Radio Relay Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Optical Communication System (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Silicon Polymers (AREA)

Abstract

"MéTODO DE GERAR SINAL EMBARALHADO, MéTODO DE EMBARALHAR SìMBOLOS EM SISTEMA DE TRANSMISSãO DE DADOS". Um esquema de embaralhamento simplificado que unifica todos os sinais de um sistema de transmissão de satélite, incluindo cabeçalho de quadro, corpo de quadro e símbolos pilotos em uma fase de referência comum. Isso resulta em maior simplificação e flexibilidade do modelo de front-end do receptor sem afetar o desempenho global do sistema. Em muitos sistemas de comunicação atuais com cabeçalho de quadro e símbolos pilotos, as fases dos cabeçalhos de quadro e símbolos pilotos não são projetadas para serem alinhadas com quaisquer pontos de constelação dos dados modulados a partir do corpo de quadro. Esse esquema de embaralhamento considera possível impacto devido a mudanças irregulares de fase entre os cabeçalhos de quadro/símbolos pilotos e dados modulados.
BRPI0413851-1A 2003-08-29 2004-08-27 "Método de gerar sinal embaralhado e de embaralhar símbolos em sistema de transmissão de dados e aparelho para embaralhar símbolos em sistema de transmissão de dados" BRPI0413851B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US49882403P 2003-08-29 2003-08-29
US60/498,824 2003-08-29
PCT/US2004/027981 WO2005022758A2 (en) 2003-08-29 2004-08-27 Simplified scrambling scheme for satellite broadcasting systems

Publications (2)

Publication Number Publication Date
BRPI0413851A true BRPI0413851A (pt) 2006-10-24
BRPI0413851B1 BRPI0413851B1 (pt) 2018-04-24

Family

ID=34272733

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0413851-1A BRPI0413851B1 (pt) 2003-08-29 2004-08-27 "Método de gerar sinal embaralhado e de embaralhar símbolos em sistema de transmissão de dados e aparelho para embaralhar símbolos em sistema de transmissão de dados"

Country Status (14)

Country Link
US (1) US7403574B2 (pt)
EP (1) EP1661350B1 (pt)
JP (2) JP2007510315A (pt)
KR (1) KR100763743B1 (pt)
CN (1) CN101248639B (pt)
AT (1) ATE476818T1 (pt)
AU (1) AU2004302831B2 (pt)
BR (1) BRPI0413851B1 (pt)
CA (1) CA2535844C (pt)
DE (1) DE602004028490D1 (pt)
ES (1) ES2348663T3 (pt)
IL (1) IL173491A (pt)
MX (1) MXPA06002176A (pt)
WO (1) WO2005022758A2 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170295500A1 (en) * 2016-04-08 2017-10-12 Qualcomm Incorporated Techniques for sparse code multiple access (scma) codebook design

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7715786B2 (en) * 2006-02-08 2010-05-11 The Directv Group, Inc. Blind identification of advanced modulation and coding modes
US8139660B2 (en) * 2006-04-14 2012-03-20 Qualcomm Incorporated Methods and apparatus related to using a wireless terminal scrambling identifier
WO2010136930A2 (en) 2009-05-27 2010-12-02 Novelsat Ltd. Iterative decoding of ldpc codes with iteration scheduling
US9264182B2 (en) 2012-09-13 2016-02-16 Novelsat Ltd. Iterative receiver loop

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6120442A (ja) * 1984-07-09 1986-01-29 Toshiba Corp 有料放送方式
US5144669A (en) * 1987-09-14 1992-09-01 British Telecommunications Public Limited Company Method of communicating digital signals and receiver for use with such method
JPH01225248A (ja) * 1988-03-03 1989-09-08 Nec Corp 秘話装置
EP0407673B1 (en) * 1989-07-12 1994-05-11 International Business Machines Corporation Process of synchronizing a receiving modem after a training on data
JPH05167349A (ja) * 1991-12-11 1993-07-02 Toshiba Corp 信号発生器
KR100235617B1 (ko) * 1996-12-31 1999-12-15 전주범 디지털-vhs 인코딩 방법 및 인코더
CA2263277A1 (en) * 1998-03-04 1999-09-04 International Mobile Satellite Organization Carrier activation for data communications
US6952480B1 (en) * 1999-09-20 2005-10-04 Applied Micro Circuits Corporation Self-synchronous data scrambler
EP1148677A3 (en) * 2000-04-17 2003-04-09 Mobilian Corporation Wireless local area network with enhanced data rate
ES2278769T3 (es) * 2000-06-27 2007-08-16 Koninklijke Philips Electronics N.V. Deteccion y correccion de saltos de fase dentro de una secuencia de fases.
JP3794617B2 (ja) * 2000-09-07 2006-07-05 株式会社エヌ・ティ・ティ・ドコモ Ｃｄｍａ移動通信方式における移動局のセルサーチ方法、並びに、ｃｄｍａ移動通信システム
US6934317B1 (en) * 2000-10-11 2005-08-23 Ericsson Inc. Systems and methods for communicating spread spectrum signals using variable signal constellations
KR100724929B1 (ko) * 2001-10-06 2007-06-04 삼성전자주식회사 부호분할다중접속 이동통신시스템에서 스크램블링 코드생성장치 및 방법
US7133354B2 (en) * 2002-08-26 2006-11-07 Qualcomm Incorporated Synchronization techniques for a wireless system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170295500A1 (en) * 2016-04-08 2017-10-12 Qualcomm Incorporated Techniques for sparse code multiple access (scma) codebook design
US11588522B2 (en) * 2016-04-08 2023-02-21 Qualcomm Incorporated Techniques for sparse code multiple access (SCMA) codebook design

Also Published As

Publication number Publication date
CA2535844A1 (en) 2005-03-10
EP1661350A4 (en) 2008-08-20
US7403574B2 (en) 2008-07-22
IL173491A0 (en) 2006-06-11
KR20060113659A (ko) 2006-11-02
BRPI0413851B1 (pt) 2018-04-24
WO2005022758A3 (en) 2005-10-27
US20060215785A1 (en) 2006-09-28
JP2011082995A (ja) 2011-04-21
CN101248639A (zh) 2008-08-20
KR100763743B1 (ko) 2007-10-04
AU2004302831A1 (en) 2005-03-10
HK1124971A1 (en) 2009-07-24
ATE476818T1 (de) 2010-08-15
WO2005022758A2 (en) 2005-03-10
CN101248639B (zh) 2011-04-13
JP5080629B2 (ja) 2012-11-21
EP1661350B1 (en) 2010-08-04
EP1661350A2 (en) 2006-05-31
AU2004302831B2 (en) 2008-08-07
ES2348663T3 (es) 2010-12-10
IL173491A (en) 2010-12-30
DE602004028490D1 (de) 2010-09-16
MXPA06002176A (es) 2006-05-22
CA2535844C (en) 2012-05-15
JP2007510315A (ja) 2007-04-19

Similar Documents

Publication Publication Date Title
WO2002054755A3 (en) System for nondisruptively embedding ofdm data into a composite video signal
KR940020799A (ko) 수신기(Receiver)
KR101165917B1 (ko) 신호를 수신하기 위한 방법 및 수신기
CA2210149A1 (en) Sequence constructions for delay-and-correlate transmitted reference signaling
WO2001050695A8 (en) Method for equalizing data received
WO2008042672A3 (en) Code reuse multiple access for satellite return link
FR2881590B1 (fr) Procede de communication numerique par paquets a travers un canal de transmission partage par une pluralite d'utilisateurs
WO2005101845A3 (en) Methods and apparatuses for minimizing co-channel interference
AU1330100A (en) Fractional-bit transmission using multiplexed constellations
EP0667698A3 (en) Transmission of data signals over telephone lines
EP1587264A3 (en) Channel estimation for MIMO transmission
EP0939503A3 (en) Optical communication system and optical reception apparatus using synchronous polarization scrambler
EP2031771A3 (en) Communication system and method of receiving high priority signals and low priority signals
KR970078066A (ko) 코드 분할 다중 액세스 채널의 심볼 스위칭
IL173491A0 (en) Simplified scrambling scheme for satellite broadcasting systems
GB2331682A (en) An apparatus and a method for a telecommunication system
MXPA05010965A (es) Convertidor y procedimiento para convertir las senales digitales recibidas en forma modulada y multiplexada.
US7844292B2 (en) System and method for in-band control signaling using bandwidth distributed encoding
KR100337020B1 (ko) 동일채널에서동작하는신호들을분리하기위한방법및장치
IL142379A0 (en) Modem relay over packet based network
KR20080051446A (ko) 분산 중계 장치 및 그 방법
WO2002039683A3 (en) Apparatus and method for sending and receiving data signals over a clock signal line by pulse with modulation
US7702030B2 (en) Module to module signaling with jitter modulation
MY137369A (en) Receiver unit and method of setting the same
EP1093268A3 (en) OFDM receiving apparatus

Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Ipc: H04L 25/03 (1974.07), H04L 27/36 (1990.01), H04B 7

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B25D Requested change of name of applicant approved
B25G Requested change of headquarter approved
B25A Requested transfer of rights approved
B25A Requested transfer of rights approved