WO1999007077A3 - Means and method for a synchronous network communications system - Google Patents

Means and method for a synchronous network communications system Download PDF

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Publication number
WO1999007077A3
WO1999007077A3 PCT/US1998/016087 US9816087W WO9907077A3 WO 1999007077 A3 WO1999007077 A3 WO 1999007077A3 US 9816087 W US9816087 W US 9816087W WO 9907077 A3 WO9907077 A3 WO 9907077A3
Authority
WO
WIPO (PCT)
Prior art keywords
nodes
phase
signal
amplitude
frequency
Prior art date
Application number
PCT/US1998/016087
Other languages
French (fr)
Other versions
WO1999007077A2 (en
Inventor
Francois Trans
Original Assignee
Stanford Syncom 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 Stanford Syncom Inc filed Critical Stanford Syncom Inc
Priority to EP98938279A priority Critical patent/EP1021884A2/en
Priority to IL13428798A priority patent/IL134287A0/en
Priority to AU86840/98A priority patent/AU8684098A/en
Priority to CA002302466A priority patent/CA2302466A1/en
Publication of WO1999007077A2 publication Critical patent/WO1999007077A2/en
Publication of WO1999007077A3 publication Critical patent/WO1999007077A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
    • H04L25/085—Arrangements for reducing interference in line transmission systems, e.g. by differential transmission
    • 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
    • H04L25/14—Channel dividing arrangements, i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0008—Synchronisation information channels, e.g. clock distribution lines

Abstract

Nodes on a network are synchronized with each other using a clock transfer system (16). The communications channels between the nodes are then measured (164) and calibrated (163) for optimal bandwidth. The optimized channels and synchronization enable a new form of signaling based on precise control of the frequency, amplitude, and phase of the waveform of the signal. Receiving nodes receive information in order to locate the signal at the frequency, phase and amplitude. Precision control (165, 166) of these parameters also serves as a unique signature of the transmitting node preventing security breaches (162) as the signal's characteristics are unique to the transmitting node. The channel is continuously updated with a precision control system (165, 166) to insure that the nodes are not out of phase.
PCT/US1998/016087 1997-07-31 1998-07-31 Means and method for a synchronous network communications system WO1999007077A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP98938279A EP1021884A2 (en) 1997-07-31 1998-07-31 Means and method for a synchronous network communications system
IL13428798A IL134287A0 (en) 1997-07-31 1998-07-31 Means and method for a synchronous network communications system
AU86840/98A AU8684098A (en) 1997-07-31 1998-07-31 Means and method for a synchronous network communications system
CA002302466A CA2302466A1 (en) 1997-07-31 1998-07-31 Means and method for a synchronous network communications system

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US5441597P 1997-07-31 1997-07-31
US5440697P 1997-07-31 1997-07-31
US60/054,406 1997-07-31
US60/054,415 1997-07-31
US8560598P 1998-05-15 1998-05-15
US60/085,605 1998-05-15
US8952698P 1998-06-15 1998-06-15
US60/089,526 1998-06-15

Publications (2)

Publication Number Publication Date
WO1999007077A2 WO1999007077A2 (en) 1999-02-11
WO1999007077A3 true WO1999007077A3 (en) 1999-04-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/016087 WO1999007077A2 (en) 1997-07-31 1998-07-31 Means and method for a synchronous network communications system

Country Status (6)

Country Link
US (2) US6377640B2 (en)
EP (1) EP1021884A2 (en)
AU (1) AU8684098A (en)
CA (1) CA2302466A1 (en)
IL (1) IL134287A0 (en)
WO (1) WO1999007077A2 (en)

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