HK1124971A1 - Simplified scrambling method and apparatus for satellite broadcasting systems - Google Patents

Simplified scrambling method and apparatus for satellite broadcasting systems

Info

Publication number
HK1124971A1
HK1124971A1 HK09100748.6A HK09100748A HK1124971A1 HK 1124971 A1 HK1124971 A1 HK 1124971A1 HK 09100748 A HK09100748 A HK 09100748A HK 1124971 A1 HK1124971 A1 HK 1124971A1
Authority
HK
Hong Kong
Prior art keywords
frame
pilot symbols
satellite broadcasting
modulated data
broadcasting systems
Prior art date
Application number
HK09100748.6A
Other languages
English (en)
Inventor
C Chen C Ernest
Dennis Lai
Tung-Sheng Lin
C Lindsey C William
Shamik Maitra
Joseph Santoru
Guangcai Zhou
Original Assignee
Dtvg Licensing Inc
Dtvg
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 Dtvg Licensing Inc, Dtvg filed Critical Dtvg Licensing Inc
Publication of HK1124971A1 publication Critical patent/HK1124971A1/xx

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)
  • Power Engineering (AREA)
  • Spectroscopy & Molecular Physics (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)
HK09100748.6A 2003-08-29 2009-01-23 Simplified scrambling method and apparatus for satellite broadcasting systems HK1124971A1 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
HK1124971A1 true HK1124971A1 (en) 2009-07-24

Family

ID=34272733

Family Applications (1)

Application Number Title Priority Date Filing Date
HK09100748.6A HK1124971A1 (en) 2003-08-29 2009-01-23 Simplified scrambling method and apparatus for satellite broadcasting systems

Country Status (15)

Country Link
US (1) US7403574B2 (ja)
EP (1) EP1661350B1 (ja)
JP (2) JP2007510315A (ja)
KR (1) KR100763743B1 (ja)
CN (1) CN101248639B (ja)
AT (1) ATE476818T1 (ja)
AU (1) AU2004302831B2 (ja)
BR (1) BRPI0413851B1 (ja)
CA (1) CA2535844C (ja)
DE (1) DE602004028490D1 (ja)
ES (1) ES2348663T3 (ja)
HK (1) HK1124971A1 (ja)
IL (1) IL173491A (ja)
MX (1) MXPA06002176A (ja)
WO (1) WO2005022758A2 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2577539C (en) * 2006-02-08 2013-04-16 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
EP2436120B1 (en) 2009-05-27 2017-09-27 Novelsat Ltd Adaptive scheduling of iterative demodulation and ldpc decoding
US9264182B2 (en) 2012-09-13 2016-02-16 Novelsat Ltd. Iterative receiver loop
US11588522B2 (en) * 2016-04-08 2023-02-21 Qualcomm Incorporated Techniques for sparse code multiple access (SCMA) codebook design

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
EP0308150B1 (en) * 1987-09-14 1993-07-07 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
DE68915274T2 (de) * 1989-07-12 1994-11-10 Ibm Verfahren zum Synchronisieren eines einfangenden Modems nach einem Training mit Daten.
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
CA2263280C (en) * 1998-03-04 2008-10-07 International Mobile Satellite Organization Method and apparatus for mobile satellite communication
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
ATE349843T1 (de) * 2000-06-27 2007-01-15 Koninkl Philips Electronics Nv Detektion und korrektur von phasensprüngen in einer phasenfolge
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

Also Published As

Publication number Publication date
JP5080629B2 (ja) 2012-11-21
EP1661350A4 (en) 2008-08-20
KR20060113659A (ko) 2006-11-02
AU2004302831B2 (en) 2008-08-07
BRPI0413851B1 (pt) 2018-04-24
AU2004302831A1 (en) 2005-03-10
US7403574B2 (en) 2008-07-22
WO2005022758A2 (en) 2005-03-10
DE602004028490D1 (de) 2010-09-16
IL173491A0 (en) 2006-06-11
JP2007510315A (ja) 2007-04-19
CA2535844C (en) 2012-05-15
MXPA06002176A (es) 2006-05-22
BRPI0413851A (pt) 2006-10-24
IL173491A (en) 2010-12-30
ATE476818T1 (de) 2010-08-15
WO2005022758A3 (en) 2005-10-27
CA2535844A1 (en) 2005-03-10
CN101248639B (zh) 2011-04-13
EP1661350A2 (en) 2006-05-31
ES2348663T3 (es) 2010-12-10
JP2011082995A (ja) 2011-04-21
EP1661350B1 (en) 2010-08-04
US20060215785A1 (en) 2006-09-28
KR100763743B1 (ko) 2007-10-04
CN101248639A (zh) 2008-08-20

Similar Documents

Publication Publication Date Title
HK1124971A1 (en) Simplified scrambling method and apparatus for satellite broadcasting systems
AU2010326327B2 (en) System for and method of removing unwanted inband signals from a received communication signal
EP1135908B8 (en) Adaptive channel characterization using decoded symbols
US6359525B1 (en) Modulation technique for transmitting multiple high data rate signals through a band limited channel
MX2007013092A (es) Metodo y sistema para modulacion y demodulacion jerarquica para radio digital.
CN105530214B (zh) 生成或接收扩展频谱gmsk信号的方法和信号生成器
WO2001050695A8 (en) Method for equalizing data received
WO1995030289A3 (en) A direct sequence cdma coherent uplink detector
WO2005101845A3 (en) Methods and apparatuses for minimizing co-channel interference
WO2002054755A3 (en) System for nondisruptively embedding ofdm data into a composite video signal
CN1527514A (zh) 干涉致干扰波消除器
EP0892509A3 (en) Communication method, transmitter, receiver, and cellular radio communication system
WO2008113033A1 (en) Systems and methods of utilizing multiple satellite transponders for data distribution
US8520756B2 (en) PHY sub-channel processing
EP1303959B1 (en) Transmission of main and auxiliary data using pulse width modulation
KR101667634B1 (ko) 열차의 궤도 회로 장치
EP2235967B1 (en) Common wave and sideband mitigation communication systems and methods for increasing communication speeds,spectral efficiency and enabling other benefits
NO333917B1 (no) Maksimalisering av effekt og spektraleffektiviteter for lagdelt og konvensjonelle modulasjoner.
CA2263520A1 (en) An apparatus and a method for a telecommunication system
US20060013120A1 (en) Method and apparatus for providing local channels in a global satellite/terrestrial network
CA2239886A1 (en) Sync compensated agc system for vsb receiver
CN1972260A (zh) 能够降低信号失真的单载波传输系统及其方法
EP1093268A3 (en) OFDM receiving apparatus
US20090316053A1 (en) Mobile digital television demodulation circuit and method
CA2385579A1 (en) Low complexity multiple bits matched filter

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20220827