GB2270447B - A subscriber unit - Google Patents

A subscriber unit

Info

Publication number
GB2270447B
GB2270447B GB9322680A GB9322680A GB2270447B GB 2270447 B GB2270447 B GB 2270447B GB 9322680 A GB9322680 A GB 9322680A GB 9322680 A GB9322680 A GB 9322680A GB 2270447 B GB2270447 B GB 2270447B
Authority
GB
United Kingdom
Prior art keywords
subscriber unit
subscriber
unit
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.)
Expired - Lifetime
Application number
GB9322680A
Other versions
GB2270447A (en
GB9322680D0 (en
Inventor
David Norton Critchlow
Moshe Yehushua
Graham Martin Avis
Wade Lyle Heimbigner
Karle Joseph Johnson
George Alan Wiley
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 GB9322680D0 (en) 1993-12-22
GB2270447A GB2270447A (en) 1994-03-09
GB2270447B true 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)

Families Citing this family (4)

* 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
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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0469303A2 (en) * 1990-07-30 1992-02-05 TriQuint Semiconductor, Inc. Delay equalization emulation for high speed phase modulated direct digital synthesis

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0469303A2 (en) * 1990-07-30 1992-02-05 TriQuint Semiconductor, Inc. Delay equalization emulation for high speed phase modulated direct digital synthesis

Also Published As

Publication number Publication date
GB2270447A (en) 1994-03-09
GB9322680D0 (en) 1993-12-22

Similar Documents

Publication Publication Date Title
GB2199206B (en) A subscriber unit
GB2239594B (en) A support
ZA905717B (en) A brace
AU113313S (en) A cookpot
HK80396A (en) A brief
GB2299156B (en) A dearmer
GB2270447B (en) A subscriber unit
EP0522007A4 (en) A fonctionalized complexand
AU110281S (en) A terminal
GB2231467B (en) A telecommunication apparatus
AU108186S (en) A can
AU106855S (en) A telephone console
GB8929254D0 (en) A structure
GB8915913D0 (en) A retaining attachment
ZA902496B (en) A carrying-handle attachment
AU107723S (en) A telephone
AU106962S (en) A telephone
GB8905097D0 (en) A land-mine
AU109424S (en) A gamesboard
AU109332S (en) A mixer-tap
AU108190S (en) A baby-bed
AU104097S (en) A gamesboard
AU111462S (en) A block
AU110683S (en) A block
AU111446S (en) A block

Legal Events

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

Expiry date: 20100731