SE0300695D0 - Arrangements and methods for a digital communication system - Google Patents

Arrangements and methods for a digital communication system

Info

Publication number
SE0300695D0
SE0300695D0 SE0300695A SE0300695A SE0300695D0 SE 0300695 D0 SE0300695 D0 SE 0300695D0 SE 0300695 A SE0300695 A SE 0300695A SE 0300695 A SE0300695 A SE 0300695A SE 0300695 D0 SE0300695 D0 SE 0300695D0
Authority
SE
Sweden
Prior art keywords
bit stream
arrangements
methods
scrambled
communication system
Prior art date
Application number
SE0300695A
Other languages
Swedish (sv)
Other versions
SE0300695L (en
SE526910C2 (en
Inventor
Magnus Johansson
Original Assignee
Upzide Labs Ab
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 Upzide Labs Ab filed Critical Upzide Labs Ab
Priority to SE0300695A priority Critical patent/SE526910C2/en
Publication of SE0300695D0 publication Critical patent/SE0300695D0/en
Priority to PCT/SE2004/000363 priority patent/WO2004082230A1/en
Priority to DE602004010378T priority patent/DE602004010378D1/en
Priority to AT04720311T priority patent/ATE379909T1/en
Priority to EP04720311A priority patent/EP1604500B1/en
Priority to US10/549,449 priority patent/US7672392B2/en
Publication of SE0300695L publication Critical patent/SE0300695L/en
Publication of SE526910C2 publication Critical patent/SE526910C2/en

Links

Classifications

    • 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
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes

Landscapes

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

Abstract

The symbols are generated randomly from a predefined symbol alphabet stored in a look-up table. The bit stream consisting of dummy and user data, is scrambled by bitwise modulo-2 addition between the quadrature amplitude modulated (QAM) bit stream and randomly generated symbols. The scrambling is performed such that power of dummy data is lower than power of user data and scrambled bit stream is transmitted. - Independent claims are also included for the following: - (1) computer program product comprising software code for storing modulated bit stream transmission program; - (2) transmitter; - (3) receiver; and - (4) transceiver.
SE0300695A 2003-03-14 2003-03-14 Modulated bit stream transmission method in digital subscriber line system, involves scrambling bit stream consisting of dummy and user data, such that power of dummy data is lower than power of user data SE526910C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE0300695A SE526910C2 (en) 2003-03-14 2003-03-14 Modulated bit stream transmission method in digital subscriber line system, involves scrambling bit stream consisting of dummy and user data, such that power of dummy data is lower than power of user data
PCT/SE2004/000363 WO2004082230A1 (en) 2003-03-14 2004-03-12 Arrangements and methods for a digital communication system
DE602004010378T DE602004010378D1 (en) 2003-03-14 2004-03-12 ARRANGEMENTS AND METHOD FOR A DIGITAL COMMUNICATION SYSTEM
AT04720311T ATE379909T1 (en) 2003-03-14 2004-03-12 ARRANGEMENTS AND METHOD FOR A DIGITAL COMMUNICATIONS SYSTEM
EP04720311A EP1604500B1 (en) 2003-03-14 2004-03-12 Arrangements and methods for a digital communication system
US10/549,449 US7672392B2 (en) 2003-03-14 2004-03-12 Arrangements and methods for a digital communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0300695A SE526910C2 (en) 2003-03-14 2003-03-14 Modulated bit stream transmission method in digital subscriber line system, involves scrambling bit stream consisting of dummy and user data, such that power of dummy data is lower than power of user data

Publications (3)

Publication Number Publication Date
SE0300695D0 true SE0300695D0 (en) 2003-03-14
SE0300695L SE0300695L (en) 2004-09-15
SE526910C2 SE526910C2 (en) 2005-11-15

Family

ID=20290671

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0300695A SE526910C2 (en) 2003-03-14 2003-03-14 Modulated bit stream transmission method in digital subscriber line system, involves scrambling bit stream consisting of dummy and user data, such that power of dummy data is lower than power of user data

Country Status (1)

Country Link
SE (1) SE526910C2 (en)

Also Published As

Publication number Publication date
SE0300695L (en) 2004-09-15
SE526910C2 (en) 2005-11-15

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Legal Events

Date Code Title Description
NUG Patent has lapsed