KR20000040740A - Gain control signal generating device of multi level demodulator - Google Patents

Gain control signal generating device of multi level demodulator Download PDF

Info

Publication number
KR20000040740A
KR20000040740A KR1019980056459A KR19980056459A KR20000040740A KR 20000040740 A KR20000040740 A KR 20000040740A KR 1019980056459 A KR1019980056459 A KR 1019980056459A KR 19980056459 A KR19980056459 A KR 19980056459A KR 20000040740 A KR20000040740 A KR 20000040740A
Authority
KR
South Korea
Prior art keywords
signal
gain control
multi level
generating device
signal generating
Prior art date
Application number
KR1019980056459A
Other languages
English (en)
Other versions
KR100311383B1 (ko
Inventor
Seok Rae Lee
Original Assignee
Lg Electronics Inc
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 Lg Electronics Inc filed Critical Lg Electronics Inc
Priority to KR1019980056459A priority Critical patent/KR100311383B1/ko
Publication of KR20000040740A publication Critical patent/KR20000040740A/ko
Application granted granted Critical
Publication of KR100311383B1 publication Critical patent/KR100311383B1/ko

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3411Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/38Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40Transmitting circuits; Receiving circuits
    • H04L25/49Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H04L25/4923Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using ternary codes
    • H04L25/4925Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using ternary codes using balanced bipolar ternary codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38Demodulator circuits; Receiver circuits
    • H04L27/3809Amplitude regulation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Control Of Amplification And Gain Control (AREA)
KR1019980056459A 1998-12-19 1998-12-19 멀티레벨복조기의이득제어신호발생장치 KR100311383B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980056459A KR100311383B1 (ko) 1998-12-19 1998-12-19 멀티레벨복조기의이득제어신호발생장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980056459A KR100311383B1 (ko) 1998-12-19 1998-12-19 멀티레벨복조기의이득제어신호발생장치

Publications (2)

Publication Number Publication Date
KR20000040740A true KR20000040740A (en) 2000-07-05
KR100311383B1 KR100311383B1 (ko) 2001-11-15

Family

ID=19563973

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980056459A KR100311383B1 (ko) 1998-12-19 1998-12-19 멀티레벨복조기의이득제어신호발생장치

Country Status (1)

Country Link
KR (1) KR100311383B1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100382653B1 (ko) * 2001-03-28 2003-05-09 삼성전자주식회사 원하는 신호를 기준으로 동작하는 agc 시스템

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814719A (en) * 1987-12-14 1989-03-21 Ford Aerospace & Communications Corporation Unsymmetrical QPSK demodulator
JPH0377457A (ja) * 1989-08-18 1991-04-03 Mitsubishi Electric Corp 復調装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100382653B1 (ko) * 2001-03-28 2003-05-09 삼성전자주식회사 원하는 신호를 기준으로 동작하는 agc 시스템

Also Published As

Publication number Publication date
KR100311383B1 (ko) 2001-11-15

Similar Documents

Publication Publication Date Title
KR920001870A (ko) 변조 캐리어 신호 수신용 전자 수신기
RU95122672A (ru) Способ автоматической регулировки усиления и исключения смещения постоянной составляющей в приемнике с квадратурной демодуляцией и устройство для его осуществления
CA2296312A1 (en) Frequency synthesizer systems and methods for three-point modulation with a dc response
RU94033150A (ru) Устройство для компенсации вращения фазы в оконечной ступени усилителя
HU9402492D0 (en) Psk demodulator
ATE416522T1 (de) Erzeugung von einem phasenverriegelten schleifesignal mit reduzierten störemissionen
CA2198337A1 (en) Frequency spreading clock modulation
GB1105337A (en) Improvements in or relating to single side band modulation systems
EP0580269A3 (ko)
KR20000040740A (en) Gain control signal generating device of multi level demodulator
CA2080786A1 (en) Vector fm modulator
KR900008789A (ko) 직접 혼합동기 am 수신기
CA2052589A1 (en) Rate conversion apparatus
ES2060536A1 (es) Sintetizador de frecuencias.
EP0325459A3 (en) Digital modulator
CA2314879A1 (en) Digital demodulator
GB1217746A (en) Improvements in or relating to demodulators
EP0445664A3 (de) Schaltungsanordnung zum Detektieren von Kennschwingungen
JPS5662407A (en) Phase modulating circuit
JPS57185741A (en) Monitoring device for phase modulator
JPS57140057A (en) Demodulating system for phase displacement modulation signal
JPH0424669Y2 (ko)
ATE91830T1 (de) Frequenzmodulationsverfahren sowie anordnung.
JPS57136810A (en) Frequency modulating system using pll
KR920015715A (ko) 디지탈 통신시스템의 fsk 변조회로

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20050607

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee