SE8901937D0 - System - Google Patents

System

Info

Publication number
SE8901937D0
SE8901937D0 SE8901937A SE8901937A SE8901937D0 SE 8901937 D0 SE8901937 D0 SE 8901937D0 SE 8901937 A SE8901937 A SE 8901937A SE 8901937 A SE8901937 A SE 8901937A SE 8901937 D0 SE8901937 D0 SE 8901937D0
Authority
SE
Sweden
Prior art keywords
power
multiplication
spread
transmisiion
oqpsk
Prior art date
Application number
SE8901937A
Other languages
English (en)
Inventor
P Sehier
Original Assignee
Alcatel Thomson Faisceaux
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 Alcatel Thomson Faisceaux filed Critical Alcatel Thomson Faisceaux
Publication of SE8901937D0 publication Critical patent/SE8901937D0/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0003—Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
    • 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
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • 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
    • H04B1/709—Correlator structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
SE8901937A 1988-05-31 1989-05-30 System SE8901937D0 (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8807219A FR2751816A1 (fr) 1988-05-31 1988-05-31 Systeme d'emission-reception de donnees numeriques a etalement de spectre

Publications (1)

Publication Number Publication Date
SE8901937D0 true SE8901937D0 (sv) 1989-05-30

Family

ID=9366770

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8901937A SE8901937D0 (sv) 1988-05-31 1989-05-30 System

Country Status (4)

Country Link
FR (1) FR2751816A1 (sv)
GB (1) GB2319147B (sv)
IT (1) IT8967383A0 (sv)
SE (1) SE8901937D0 (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1311073A1 (en) * 2001-11-12 2003-05-14 Texas Instruments Incorporated Modulation system for complex spreading codes
CN102075472B (zh) * 2011-02-16 2014-12-31 四川九洲电器集团有限责任公司 一种扩频oqpsk中频及解扩解调方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1191905A (en) * 1982-06-30 1985-08-13 Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'exploitation Limitee Spread spectrum modem

Also Published As

Publication number Publication date
GB8912003D0 (en) 1998-02-18
FR2751816A1 (fr) 1998-01-30
IT8967383A0 (it) 1989-05-23
GB2319147A (en) 1998-05-13
GB2319147B (en) 1998-09-02

Similar Documents

Publication Publication Date Title
US5228056A (en) Synchronous spread-spectrum communications system and method
EP0750411A3 (en) Unique word detector for use in a coherent demodulator
JPS53108310A (en) Extended spectrum communication system and radio receiver
CA2294216A1 (en) Receiving a spread spectrum signal
CA2125489A1 (en) Timing and Automatic Frequency Control of Digital Receiver Using the Cyclic Properties of a Non-Linear Operation
HK1004359A1 (en) Reception of orthogonal frequency division multiplexed signals
SE9800827L (sv) Mottagare
DK95590A (da) Fremgangsmaade til at demodulere dataer
EP0871297A3 (en) Communication system, transmitter and receiver
DE3265755D1 (en) Carrier recovery device for a 16-state amplitude and phase modulation, and digital data receiving system using such a device
SE8901937D0 (sv) System
WO1992000502A3 (en) Demodulation reference signal source
EP1335551A3 (en) Reception of CPM spread-spectrum communications
EP0909039A3 (en) Spread spectrum method for digital data transfer
ATE179851T1 (de) Mpsk-demodulator
DE3465680D1 (en) Carrier and clocking frequency recovery for digital transmission systems with phase or amplitude modulation and coherent demodulation
DE3068626D1 (en) Circuit for the demodulation of a signal modulated by digital information and receiver comprising such a circuit
IT7827826A0 (it) Circuito rivelatore della fase di impulsi di campionamento, di particolare applicazione nella stazione ricevente di un sistema per la trasmissione di dati.
Jones et al. Performance of a parallel time-frequency direct sequence spread-spectrum acquisition scheme
Ravi et al. Simulation performance of a quantized log-likelihood sequential detector for PN code acquisition in the presence of data modulation and Doppler shift
JP3123834B2 (ja) スペクトラム拡散通信システム
JPS5275965A (en) Reception circuit for multi-valued carrier wave digital signal
JPS5617573A (en) Transmitting/receiving system for facsimile signal
JPS5393718A (en) Interference detecting system for multi-phase modulation same frequencyband polarized wave sharing communication
JPS5561163A (en) Demodulation circuit for synchronous data transmission signal