GB9322680D0 - Subscriber unit for wireless digital subscriber communication system - Google Patents

Subscriber unit for wireless digital subscriber communication system

Info

Publication number
GB9322680D0
GB9322680D0 GB939322680A GB9322680A GB9322680D0 GB 9322680 D0 GB9322680 D0 GB 9322680D0 GB 939322680 A GB939322680 A GB 939322680A GB 9322680 A GB9322680 A GB 9322680A GB 9322680 D0 GB9322680 D0 GB 9322680D0
Authority
GB
United Kingdom
Prior art keywords
communication system
wireless digital
subscriber
subscriber unit
digital subscriber
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
GB939322680A
Other versions
GB2270447A (en
GB2270447B (en
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
InterDigital Technology Corp
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
Priority claimed from US07/394,497 external-priority patent/US5008900A/en
Priority claimed from GB9313280A external-priority patent/GB2266646B/en
Application filed by InterDigital Technology Corp filed Critical InterDigital Technology Corp
Publication of GB9322680D0 publication Critical patent/GB9322680D0/en
Publication of GB2270447A publication Critical patent/GB2270447A/en
Application granted granted Critical
Publication of GB2270447B publication Critical patent/GB2270447B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • 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
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2092—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner with digital generation of the modulated carrier (does not include the modulation of a digitally generated carrier)
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B28/00—Generation of oscillations by methods not covered by groups H03B5/00 - H03B27/00, including modification of the waveform to produce sinusoidal oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • 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
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03477—Tapped delay lines not time-recursive

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
GB9322680A 1989-08-14 1993-11-03 A subscriber unit Expired - Lifetime GB2270447B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/394,497 US5008900A (en) 1989-08-14 1989-08-14 Subscriber unit for wireless digital subscriber communication system
GB9313280A GB2266646B (en) 1989-08-14 1993-06-25 A finite impulse response (FIR) chip for use in a subscriber unit for a wireless digital telephone system

Publications (3)

Publication Number Publication Date
GB9322680D0 true GB9322680D0 (en) 1993-12-22
GB2270447A GB2270447A (en) 1994-03-09
GB2270447B GB2270447B (en) 1994-05-25

Family

ID=26303136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9322680A Expired - Lifetime GB2270447B (en) 1989-08-14 1993-11-03 A subscriber unit

Country Status (1)

Country Link
GB (1) GB2270447B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107703520A (en) * 2017-09-20 2018-02-16 北京昶远科技有限公司 A kind of method and apparatus that differential data is transmitted using unmanned vehicle task link

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778027A (en) * 1995-11-24 1998-07-07 Telefonaktiebolaget Lm Ericsson Method and apparatus for determining signal components using digital signal processing
GB2311194B (en) * 1996-03-12 2000-05-31 Nokia Mobile Phones Ltd Transmitting and receiving radio signals
DE102004014148A1 (en) * 2004-03-23 2005-10-13 Rohde & Schwarz Gmbh & Co. Kg Digital IQ modulator with numerically controlled frequency oscillator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140540A (en) * 1990-07-30 1992-08-18 Triquint Semiconductor, Inc. Delay equalization emulation for high speed phase modulated direct digital synthesis

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107703520A (en) * 2017-09-20 2018-02-16 北京昶远科技有限公司 A kind of method and apparatus that differential data is transmitted using unmanned vehicle task link
CN107703520B (en) * 2017-09-20 2023-09-05 北京昶远科技有限公司 Method and device for transmitting differential data by using unmanned aerial vehicle mission link

Also Published As

Publication number Publication date
GB2270447A (en) 1994-03-09
GB2270447B (en) 1994-05-25

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20100731