KR100339626B1 - 무한주파수응답 필터를 이용한 주파수편이-키잉 복조시스템 - Google Patents
무한주파수응답 필터를 이용한 주파수편이-키잉 복조시스템 Download PDFInfo
- Publication number
- KR100339626B1 KR100339626B1 KR1019990047658A KR19990047658A KR100339626B1 KR 100339626 B1 KR100339626 B1 KR 100339626B1 KR 1019990047658 A KR1019990047658 A KR 1019990047658A KR 19990047658 A KR19990047658 A KR 19990047658A KR 100339626 B1 KR100339626 B1 KR 100339626B1
- Authority
- KR
- South Korea
- Prior art keywords
- frequency
- signal
- demodulation system
- filter
- phase
- 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
Links
- 230000004044 response Effects 0.000 title claims abstract description 45
- 238000006243 chemical reaction Methods 0.000 claims abstract 4
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
- H04L7/0331—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop with a digital phase-locked loop [PLL] processing binary samples, e.g. add/subtract logic for correction of receiver clock
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H2017/0072—Theoretical filter design
- H03H2017/009—Theoretical filter design of IIR filters
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
Claims (4)
- 삭제
- 삭제
- 삭제
- 소정의 마크주파수(mark frequency)와 스페이스주파수(space frequency)로 주파수편이-키잉(frequency shift keying) 변조된 신호를 입력받아 이를 복조하기 위한 주파수편이-키잉 복조시스템에 있어서, 상기 변조 신호를 입력받아 소정의 변환 신호를 출력하는 무한임펄스응답(infinite impulse response) 필터로서, 그 크기 특성(magnitude characteristics)은 상기 마크주파수와 상기 스페이스주파수를 포함하는 주파수 영역에 대하여 대역 통과(band-pass)의 특성을 가지며 그 위상 특성(phase characteristics)이 상기 마크주파수와 상기 스페이스주파수에 대하여 서로 반대방향의 위상이득(phase gain)을 가지되 그 위상 이득 편차의 크기가 160도 내지 200도인 특성을 갖는 무한임펄스응답 필터; 및 상기 무한임펄스응답 필터의 출력 신호인 상기 변환 신호를 입력받아 상기 변환 신호에 있어서 위상 반전이 발생하였을 때 상기 변조 신호에 상기 마크주파수와 상기 스페이스주파수 간의 절환(switching)이 존재하는 것으로 판단하는 판단부를 포함하는 것을 특징으로 하는 주파수편이-키잉 복조시스템.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990047658A KR100339626B1 (ko) | 1999-10-29 | 1999-10-29 | 무한주파수응답 필터를 이용한 주파수편이-키잉 복조시스템 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990047658A KR100339626B1 (ko) | 1999-10-29 | 1999-10-29 | 무한주파수응답 필터를 이용한 주파수편이-키잉 복조시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000006745A KR20000006745A (ko) | 2000-02-07 |
KR100339626B1 true KR100339626B1 (ko) | 2002-06-03 |
Family
ID=19617775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019990047658A Expired - Lifetime KR100339626B1 (ko) | 1999-10-29 | 1999-10-29 | 무한주파수응답 필터를 이용한 주파수편이-키잉 복조시스템 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100339626B1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100627014B1 (ko) * | 2004-03-30 | 2006-09-25 | 김기성 | 레저용 편심 파라솔과 테이블 |
-
1999
- 1999-10-29 KR KR1019990047658A patent/KR100339626B1/ko not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR20000006745A (ko) | 2000-02-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2192509A (en) | Sampled data band-pass filter device | |
GB2215545A (en) | A direct-conversion receiver | |
KR20010023486A (ko) | 주파수 오프셋 이미지 리젝션 | |
DK166242B (da) | Fremgangsmaade og demodulator til digital demodulering af et ssb-signal | |
EP0262843A2 (en) | Raised cosine filtering for modems | |
KR100339626B1 (ko) | 무한주파수응답 필터를 이용한 주파수편이-키잉 복조시스템 | |
US5764708A (en) | Device for identifying a predetermined sequence of signals in a modem | |
JPH04310037A (ja) | Fsk受信機 | |
KR20010078249A (ko) | 선형 위상 특성을 갖는 필터 장치 및 이러한 필터 장치를개발하기 위한 방법 | |
US6873663B1 (en) | Reception of M-ary PSK-modulated signals | |
JP2834137B2 (ja) | リンギング除去装置 | |
JP2001197139A (ja) | Agc回路及びデータ通信装置 | |
JP2919475B2 (ja) | Fm復調器における適応制御型ヒルベルト変換器 | |
KR100548234B1 (ko) | 디지탈 심볼 타이밍 복원 장치 | |
US7139326B2 (en) | Image-canceling quadrature modulator and method | |
JPH10209904A (ja) | 受信機 | |
US2883464A (en) | Device for signal receivers | |
JP3225257B2 (ja) | Fm受信機 | |
KR0155732B1 (ko) | 디지탈 주파수복조기 | |
JP2914979B2 (ja) | 周波数変換装置 | |
KR840008563A (ko) | 주파수 선택 장치 | |
KR950003359B1 (ko) | 고속 처리에 적합한 복조기 | |
KR970007881B1 (ko) | 디지탈 주파수복조기 | |
JPS63232516A (ja) | 波形整形回路 | |
JPH01264307A (ja) | 変調装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19991029 |
|
PA0201 | Request for examination | ||
N231 | Notification of change of applicant | ||
PN2301 | Change of applicant |
Patent event date: 20000201 Comment text: Notification of Change of Applicant Patent event code: PN23011R01D |
|
PG1501 | Laying open of application | ||
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20010531 Patent event code: PE09021S01D |
|
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 20020515 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 20020523 Patent event code: PR07011E01D |
|
PR1002 | Payment of registration fee |
Payment date: 20020523 End annual number: 3 Start annual number: 1 |
|
PG1601 | Publication of registration | ||
PR1001 | Payment of annual fee |
Payment date: 20050502 Start annual number: 4 End annual number: 6 |
|
PR1001 | Payment of annual fee |
Payment date: 20080521 Start annual number: 7 End annual number: 7 |
|
PR1001 | Payment of annual fee |
Payment date: 20090409 Start annual number: 8 End annual number: 8 |
|
PR1001 | Payment of annual fee |
Payment date: 20100406 Start annual number: 9 End annual number: 9 |
|
PR1001 | Payment of annual fee |
Payment date: 20110331 Start annual number: 10 End annual number: 10 |
|
PR1001 | Payment of annual fee |
Payment date: 20120406 Start annual number: 11 End annual number: 11 |
|
FPAY | Annual fee payment |
Payment date: 20130403 Year of fee payment: 12 |
|
PR1001 | Payment of annual fee |
Payment date: 20130403 Start annual number: 12 End annual number: 12 |
|
FPAY | Annual fee payment |
Payment date: 20140409 Year of fee payment: 13 |
|
PR1001 | Payment of annual fee |
Payment date: 20140409 Start annual number: 13 End annual number: 13 |
|
FPAY | Annual fee payment |
Payment date: 20150421 Year of fee payment: 14 |
|
PR1001 | Payment of annual fee |
Payment date: 20150421 Start annual number: 14 End annual number: 14 |
|
FPAY | Annual fee payment |
Payment date: 20160414 Year of fee payment: 15 |
|
PR1001 | Payment of annual fee |
Payment date: 20160414 Start annual number: 15 End annual number: 15 |
|
FPAY | Annual fee payment |
Payment date: 20170417 Year of fee payment: 16 |
|
PR1001 | Payment of annual fee |
Payment date: 20170417 Start annual number: 16 End annual number: 16 |
|
FPAY | Annual fee payment |
Payment date: 20180423 Year of fee payment: 17 |
|
PR1001 | Payment of annual fee |
Payment date: 20180423 Start annual number: 17 End annual number: 17 |
|
FPAY | Annual fee payment |
Payment date: 20190408 Year of fee payment: 18 |
|
PR1001 | Payment of annual fee |
Payment date: 20190408 Start annual number: 18 End annual number: 18 |
|
PC1801 | Expiration of term |
Termination date: 20200429 Termination category: Expiration of duration |