KR100616264B1 - 직교 신호의 복조 방법 및 복조 유닛 - Google Patents
직교 신호의 복조 방법 및 복조 유닛 Download PDFInfo
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- KR100616264B1 KR100616264B1 KR1019997006552A KR19997006552A KR100616264B1 KR 100616264 B1 KR100616264 B1 KR 100616264B1 KR 1019997006552 A KR1019997006552 A KR 1019997006552A KR 19997006552 A KR19997006552 A KR 19997006552A KR 100616264 B1 KR100616264 B1 KR 100616264B1
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- divider
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- 238000000034 method Methods 0.000 title claims description 11
- 230000010355 oscillation Effects 0.000 claims abstract description 12
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- 229920000729 poly(L-lysine) polymer Polymers 0.000 description 24
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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Classifications
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- 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
- H04L27/22—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/22—Homodyne or synchrodyne circuits
- H03D1/2245—Homodyne or synchrodyne circuits using two quadrature channels
- H03D1/2254—Homodyne or synchrodyne circuits using two quadrature channels and a phase locked loop
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
- H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
- H03D3/245—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop using at least twophase detectors in the loop
-
- 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
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/003—Correction of carrier offset at baseband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0057—Closed loops quadrature phase
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0063—Elements of loops
- H04L2027/0069—Loop filters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Superheterodyne Receivers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Circuits Of Receivers In General (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
Claims (9)
- 적어도 두 개의 성분들을 갖는 직교 입력 신호(quadrature input signal)를 복조하기 위한 복조 유닛으로서,제어 신호에 따라 직교 발진 신호를 공급하기 위한 제어 발진기, 및상기 직교 입력 신호를 상기 제어 발진기로부터의 상기 직교 발진 신호와 혼합하고, 적어도 두 개의 혼합된 성분들을 공급하기 위한 혼합기를 포함하며,상기 혼합기 및 상기 발진기는 PLL에 통합되는, 상기 복조 유닛에 있어서,상기 PLL 은,상기 적어도 두 개의 혼합된 성분들을 서로 제산하는 제산기로서, 상기 제산기의 출력 신호를 제어 신호로서 상기 발진기에 공급하되는, 상기 제산기, 및하나 이상의 성분들 및/또는 신호들을 필터링하기 위한 필터링 유닛을 더 포함하는 것을 특징으로 하는, 복조 유닛.
- 제 1 항에 있어서,상기 제산기는 선형 CORDIC을 포함하는 것을 특징으로 하는, 복조 유닛.
- 제 1 항에 있어서,상기 혼합기는 원형 CORDIC을 포함하는 것을 특징으로 하는, 복조 유닛.
- 제 1 항에 있어서,상기 필터링 유닛은 상기 혼합기와 상기 제산기 사이에 연결된 제 1 및 제 2 저역 통과 필터(L1, L2)를 포함하는 것을 특징으로 하는, 복조 유닛.
- 제 1 항에 있어서,상기 PLL은 플립플롭 및 멀티플렉서를 포함하고, 혼합된 성분의 포지티브 또는 네거티브 값 중 하나가 상기 제산기의 입력들 중 하나에서 수신되는 경우 상기 제산기의 출력 신호만을 상기 제어 발진기에 인가하고, 그 밖의 경우 상기 플립플롭에 저장된 값을 공급하는 것을 특징으로 하는, 복조 유닛.
- 복조 유닛에서 사용을 위한 제산기에 있어서,상기 제산기는 적어도 두 개의 혼합된 성분들을 서로 제산하고, 상기 제산기의 출력 신호를 제어 신호로서 공급하도록 적응된 것을 특징으로 하는, 제산기.
- 제 1 항의 복조 유닛에 사용되는 혼합기로서,상기 혼합기는 직교 입력 신호와 직교 발진 신호를 혼합하고, 적어도 두 개의 혼합된 성분들을 공급하도록 적응된 것을 특징으로 하는, 혼합기.
- 수신될 신호를 복조될 신호로 변환하기 위한 튜너, 및 상기 복조될 신호를 복조될 직교 신호로 변환하기 위한 콤플렉스 입력 필터를 포함하는 수신기에 있어서,상기 수신기는 제 1 항에 청구된 바와 같은 복조 유닛을 포함하는 것을 특징으로 하는, 수신기.
- 적어도 두 개의 성분들을 갖는 직교 입력 신호의 복조 방법으로서,직교 발진 신호가 제어 신호에 따라 공급되며,상기 직교 입력 신호는 상기 직교 발진 신호와 혼합되고, 적어도 두 개의 혼합된 성분들이 공급되는, 상기 복조 방법에 있어서,상기 적어도 두 개의 혼합된 성분들을 서로 제산하고, 상기 발진 신호를 생성하기 위한 제어 신호로서 상기 제산의 결과인 출력 신호를 공급하는 단계, 및하나 이상의 성분들 및/또는 신호들을 필터링하는 단계를 더 포함하는 것을 특징으로 하는, 복조 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97203648 | 1997-11-21 | ||
EP97203648.7 | 1997-11-21 | ||
PCT/IB1998/001808 WO1999027689A2 (en) | 1997-11-21 | 1998-11-13 | Demodulation unit and method of demodulating a quadrature signal |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000070321A KR20000070321A (ko) | 2000-11-25 |
KR100616264B1 true KR100616264B1 (ko) | 2006-08-28 |
Family
ID=8228955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019997006552A Expired - Fee Related KR100616264B1 (ko) | 1997-11-21 | 1998-11-13 | 직교 신호의 복조 방법 및 복조 유닛 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6175269B1 (ko) |
EP (1) | EP0965208A2 (ko) |
JP (1) | JP2001508634A (ko) |
KR (1) | KR100616264B1 (ko) |
WO (1) | WO1999027689A2 (ko) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2168869C1 (ru) * | 2000-02-09 | 2001-06-10 | Государственное конструкторское бюро аппаратно-программных систем "Связь" | Способ демодуляции сигналов с относительной фазовой манипуляцией и устройство для его реализации |
KR20020000895A (ko) | 2000-03-21 | 2002-01-05 | 롤페스 요하네스 게라투스 알베르투스 | 통신 시스템 |
US7031992B2 (en) * | 2000-09-08 | 2006-04-18 | Quartics, Inc. | Hardware function generator support in a DSP |
US20030220086A1 (en) * | 2002-05-23 | 2003-11-27 | Icefyre Semiconductor Corporation | Oscillator frequency offsets |
US7508451B2 (en) * | 2004-04-30 | 2009-03-24 | Telegent Systems, Inc. | Phase-noise mitigation in an integrated analog video receiver |
KR101039451B1 (ko) * | 2004-04-30 | 2011-06-07 | 텔레전트 시스템즈, 인크. | 집적 아날로그 비디오 수신기 |
US7453288B2 (en) * | 2006-02-16 | 2008-11-18 | Sigmatel, Inc. | Clock translator and parallel to serial converter |
US7856464B2 (en) * | 2006-02-16 | 2010-12-21 | Sigmatel, Inc. | Decimation filter |
US7724861B2 (en) * | 2006-03-22 | 2010-05-25 | Sigmatel, Inc. | Sample rate converter |
US7792220B2 (en) * | 2006-12-19 | 2010-09-07 | Sigmatel, Inc. | Demodulator system and method |
US7577419B2 (en) * | 2006-12-19 | 2009-08-18 | Sigmatel, Inc. | Digital mixer system and method |
US7831001B2 (en) * | 2006-12-19 | 2010-11-09 | Sigmatel, Inc. | Digital audio processing system and method |
US7729461B2 (en) * | 2006-12-22 | 2010-06-01 | Sigmatel, Inc. | System and method of signal processing |
US8140039B2 (en) | 2007-09-10 | 2012-03-20 | The Hong Kong University Of Science And Technology | Quadrature-input quadrature-output divider and phase locked loop frequency synthesizer or single side band mixer |
RU2435323C2 (ru) * | 2010-01-11 | 2011-11-27 | Государственное образовательное учреждение высшего профессионального образования "Тамбовский государственный технический университет" (ГОУ ВПО ТГТУ) | Способ передачи информации с помощью шумоподобных сигналов |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0579100A1 (de) * | 1992-07-14 | 1994-01-19 | Daimler-Benz Aerospace Aktiengesellschaft | Verfahren und Einrichtung zur Phasenkorrektur im Basisband eines PSK-Empfängers |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0305604B1 (en) * | 1987-09-03 | 1992-06-03 | Koninklijke Philips Electronics N.V. | Receiver comprising parallel signal paths |
NL9002489A (nl) * | 1990-11-15 | 1992-06-01 | Philips Nv | Ontvanger. |
GB9116051D0 (en) * | 1991-07-24 | 1991-09-11 | Phase Track Limited | Am receiver system |
US5696797A (en) * | 1994-07-22 | 1997-12-09 | Motorola, Inc. | Demodulator with baseband doppler shift compensation and method |
KR100346966B1 (ko) | 1994-09-02 | 2002-11-30 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 직교솎음단을갖는수신기및디지탈신호처리방법 |
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1998
- 1998-11-13 EP EP98951624A patent/EP0965208A2/en not_active Withdrawn
- 1998-11-13 JP JP52800699A patent/JP2001508634A/ja not_active Abandoned
- 1998-11-13 WO PCT/IB1998/001808 patent/WO1999027689A2/en not_active Application Discontinuation
- 1998-11-13 KR KR1019997006552A patent/KR100616264B1/ko not_active Expired - Fee Related
- 1998-11-19 US US09/196,089 patent/US6175269B1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0579100A1 (de) * | 1992-07-14 | 1994-01-19 | Daimler-Benz Aerospace Aktiengesellschaft | Verfahren und Einrichtung zur Phasenkorrektur im Basisband eines PSK-Empfängers |
Also Published As
Publication number | Publication date |
---|---|
JP2001508634A (ja) | 2001-06-26 |
WO1999027689A3 (en) | 1999-08-12 |
WO1999027689A2 (en) | 1999-06-03 |
US6175269B1 (en) | 2001-01-16 |
EP0965208A2 (en) | 1999-12-22 |
KR20000070321A (ko) | 2000-11-25 |
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