GB2350987B - Phase modulating apparatus effectively using waveform storage unit - Google Patents

Phase modulating apparatus effectively using waveform storage unit

Info

Publication number
GB2350987B
GB2350987B GB0021679A GB0021679A GB2350987B GB 2350987 B GB2350987 B GB 2350987B GB 0021679 A GB0021679 A GB 0021679A GB 0021679 A GB0021679 A GB 0021679A GB 2350987 B GB2350987 B GB 2350987B
Authority
GB
United Kingdom
Prior art keywords
storage unit
phase modulating
waveform storage
modulating apparatus
apparatus effectively
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 - Fee Related
Application number
GB0021679A
Other versions
GB0021679D0 (en
GB2350987A (en
Inventor
Yashiro Takaaki
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 JP30917095A external-priority patent/JP3454623B2/en
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of GB0021679D0 publication Critical patent/GB0021679D0/en
Publication of GB2350987A publication Critical patent/GB2350987A/en
Application granted granted Critical
Publication of GB2350987B publication Critical patent/GB2350987B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB0021679A 1995-11-28 1996-11-27 Phase modulating apparatus effectively using waveform storage unit Expired - Fee Related GB2350987B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30917095A JP3454623B2 (en) 1995-11-28 1995-11-28 π / 4 shift QPSK quadrature modulator
GB9810282A GB2322056B (en) 1995-11-28 1996-11-27 Phase modulating apparatus

Publications (3)

Publication Number Publication Date
GB0021679D0 GB0021679D0 (en) 2000-10-18
GB2350987A GB2350987A (en) 2000-12-13
GB2350987B true GB2350987B (en) 2001-02-14

Family

ID=26313673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0021679A Expired - Fee Related GB2350987B (en) 1995-11-28 1996-11-27 Phase modulating apparatus effectively using waveform storage unit

Country Status (1)

Country Link
GB (1) GB2350987B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50153175A (en) * 1974-06-03 1975-12-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50153175A (en) * 1974-06-03 1975-12-09

Also Published As

Publication number Publication date
GB0021679D0 (en) 2000-10-18
GB2350987A (en) 2000-12-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061127