DK199800942A - Fremgangsmåde og apparat til konstant indhyllingskurve kvadratur-kvadratur amplitude modulation - Google Patents

Fremgangsmåde og apparat til konstant indhyllingskurve kvadratur-kvadratur amplitude modulation

Info

Publication number
DK199800942A
DK199800942A DK199800942A DKPA199800942A DK199800942A DK 199800942 A DK199800942 A DK 199800942A DK 199800942 A DK199800942 A DK 199800942A DK PA199800942 A DKPA199800942 A DK PA199800942A DK 199800942 A DK199800942 A DK 199800942A
Authority
DK
Denmark
Prior art keywords
quadrature
amplitude modulation
envelope curve
constant envelope
quadrature amplitude
Prior art date
Application number
DK199800942A
Other languages
English (en)
Inventor
In Jai Park
Woo Hyung Lee
Original Assignee
Daewoo Telecom 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
Application filed by Daewoo Telecom Ltd filed Critical Daewoo Telecom Ltd
Publication of DK199800942A publication Critical patent/DK199800942A/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • 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
    • H04L27/2071—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 in which the data are represented by the carrier phase, e.g. systems with differential coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DK199800942A 1996-11-19 1998-07-17 Fremgangsmåde og apparat til konstant indhyllingskurve kvadratur-kvadratur amplitude modulation DK199800942A (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019960055451A KR100221832B1 (ko) 1996-11-19 1996-11-19 정진폭특성을 갖는 쌍직교진폭변조방법 및 그 장치
PCT/KR1997/000224 WO1998023072A1 (en) 1996-11-19 1997-11-18 Method and apparatus for constant envelope quadrature-quadrature amplitude modulation

Publications (1)

Publication Number Publication Date
DK199800942A true DK199800942A (da) 1998-09-14

Family

ID=19482544

Family Applications (1)

Application Number Title Priority Date Filing Date
DK199800942A DK199800942A (da) 1996-11-19 1998-07-17 Fremgangsmåde og apparat til konstant indhyllingskurve kvadratur-kvadratur amplitude modulation

Country Status (8)

Country Link
US (1) US5920237A (da)
JP (1) JP2000504528A (da)
KR (1) KR100221832B1 (da)
CA (1) CA2221371A1 (da)
DK (1) DK199800942A (da)
FI (1) FI981577A (da)
SE (1) SE9802457L (da)
WO (1) WO1998023072A1 (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6335951B1 (en) * 1998-12-04 2002-01-01 Itt Manufacturing Enterprises, Inc. Programmable waveform generator for a global positioning system
KR100587788B1 (ko) * 2004-09-22 2006-06-09 전자부품연구원 정진폭 다중부호 이진직교 변조 신호의 최적 복조와준최적 복조방법, 및 그 장치
US7505506B1 (en) * 2005-02-25 2009-03-17 Itt Manufacturing Enterprises, Inc. System and method for generating single sideband, constant envelope, spread spectrum signals with multiple spreading codes
KR100727133B1 (ko) * 2005-12-26 2007-06-13 주식회사 팬택 이동통신 단말기에서 잡음 및 간섭 마진을 확장한씨디엠에이 변조 장치
KR100776975B1 (ko) * 2006-07-26 2007-11-21 전자부품연구원 정진폭 이진 직교 변조 및 쌍직교 진폭 변조를 이용한변조기

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115438A (en) * 1988-08-04 1992-05-19 Siemens Aktiengesellschaft Method for redundancy-saving, error-correcting coding in digital radio link systems having multi-level modulation
US5519730A (en) * 1990-06-12 1996-05-21 Jasper; Steven C. Communication signal having a time domain pilot component
EP0503588B1 (en) * 1991-03-11 1997-10-01 Nippon Telegraph And Telephone Corporation Quadrature amplitude modulator with distortion compensation
CA2106848C (en) * 1991-03-28 1998-12-01 John David Brownlie Frame synchronisation for qam
KR0129577B1 (ko) * 1994-04-30 1998-04-10 배순훈 32-직각진폭변조방식을 이용하는 영상수신시스템에서 개선된 메트릭 계산방법
JPH08163189A (ja) * 1994-12-06 1996-06-21 Nec Corp 送信回路
US5638401A (en) * 1995-01-31 1997-06-10 Ericsson Inc. Method and apparatus for generating plural quadrature modulated carriers

Also Published As

Publication number Publication date
CA2221371A1 (en) 1998-05-19
FI981577A (fi) 1998-09-18
KR19980036822A (ko) 1998-08-05
SE9802457D0 (sv) 1998-07-08
FI981577A0 (fi) 1997-11-18
SE9802457L (sv) 1998-09-17
WO1998023072A1 (en) 1998-05-28
JP2000504528A (ja) 2000-04-11
KR100221832B1 (ko) 1999-09-15
US5920237A (en) 1999-07-06

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment