CA2091785A1 - Synchronous spread spectrum communications system and method - Google Patents

Synchronous spread spectrum communications system and method

Info

Publication number
CA2091785A1
CA2091785A1 CA2091785A CA2091785A CA2091785A1 CA 2091785 A1 CA2091785 A1 CA 2091785A1 CA 2091785 A CA2091785 A CA 2091785A CA 2091785 A CA2091785 A CA 2091785A CA 2091785 A1 CA2091785 A1 CA 2091785A1
Authority
CA
Canada
Prior art keywords
chip
signal
generic
message
code
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2091785A
Other languages
French (fr)
Other versions
CA2091785C (en
Inventor
Donald L. Schilling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
InterDigital Technology Corp
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24508972&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2091785(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to CA002320678A priority Critical patent/CA2320678C/en
Publication of CA2091785A1 publication Critical patent/CA2091785A1/en
Application granted granted Critical
Publication of CA2091785C publication Critical patent/CA2091785C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • 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
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18545—Arrangements for managing station mobility, i.e. for station registration or localisation
    • H04B7/18547—Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station

Abstract

A spread spectrum communications system for use over a communication channel, including a transmitter-generic-chip-code generator (101), a transmitter-message-chip-code generator (102), an EXCLUSIVE-OR gate (103), a combiner (104), a transmitter (107), a receiver-generic-chip-code generator (121), a receiver-generic mixer (123), a generic-bandpass filter (125), a receiver-message-chip-code generator (122), a receiver-message mixer (124), a message-bandpass filter (126), and a synchronous detector (139). The transmitter-generic-chip-code generator (101) generates a generic-chip-code signal and the transmitter-message-chip-code generator (102) generates a message-chip-code signal. The EXCLUSIVE-OR gate (103) spread-spectrum processes message data with the message-chip-code signal to generate a spread-spectrum signal. The combiner (104) combines the generic-chip-code signal with the spread-spectrum signal. The transmitter (107) transmits the combined generic-chip-code signal and spread-spectrum signal, on a carrier signal (108) over the communications channel as a spread-spectrum-communications signal. The receiver-generic-chip-code generator (121) generates a replica of the generic-chip-code signal. The generic mixer (123) recovers the carrier signal from the spread-spectrum-communications signal. The receiver-message-chip-code generator (122) generates a replica of the message-chip-code signal. The receiver-message mixer (124) despreads the spread-spectrum-communications signal as a modulated-data signal. The tracking and acquisition circuit (121) uses the recovered carrier signal for synchronizing the replicas of the generic-chip-code signal to the recovered carrier signal.
The synchronous detector (139) synchronously demodulates the modulated-data signal as received data.
CA002091785A 1990-12-14 1991-12-10 Synchronous spread spectrum communications system and method Expired - Lifetime CA2091785C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002320678A CA2320678C (en) 1990-12-14 1991-12-10 Synchronous spread-spectrum communications system and method

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/626,109 US5228056A (en) 1990-12-14 1990-12-14 Synchronous spread-spectrum communications system and method
US626,109 1990-12-14
PCT/US1991/009214 WO1992010892A1 (en) 1990-12-14 1991-12-10 Synchronous spread-spectrum communications system and method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002320678A Division CA2320678C (en) 1990-12-14 1991-12-10 Synchronous spread-spectrum communications system and method

Publications (2)

Publication Number Publication Date
CA2091785A1 true CA2091785A1 (en) 1992-06-15
CA2091785C CA2091785C (en) 2001-02-06

Family

ID=24508972

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002091785A Expired - Lifetime CA2091785C (en) 1990-12-14 1991-12-10 Synchronous spread spectrum communications system and method
CA2679170A Expired - Lifetime CA2679170C (en) 1990-12-14 1991-12-10 Synchronous spread-spectrum communications system and method

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA2679170A Expired - Lifetime CA2679170C (en) 1990-12-14 1991-12-10 Synchronous spread-spectrum communications system and method

Country Status (7)

Country Link
US (2) US5228056A (en)
EP (1) EP0515675B1 (en)
CA (2) CA2091785C (en)
DE (2) DE69129846T4 (en)
ES (1) ES2118811T4 (en)
SG (1) SG43895A1 (en)
WO (1) WO1992010892A1 (en)

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CA2679170A1 (en) 1992-06-15
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WO1992010892A1 (en) 1992-06-25
EP0515675B1 (en) 1998-07-22
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US5228056A (en) 1993-07-13
EP0515675A4 (en) 1994-03-09
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DE69129846T4 (en) 1999-07-29
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US5420896A (en) 1995-05-30
CA2679170C (en) 2010-10-26
SG43895A1 (en) 1997-11-14

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