RU96114903A - RECEIVER WITH ADJUSTABLE LEVEL OF SYMBOL DEMODULATOR - Google Patents
RECEIVER WITH ADJUSTABLE LEVEL OF SYMBOL DEMODULATORInfo
- Publication number
- RU96114903A RU96114903A RU96114903/09A RU96114903A RU96114903A RU 96114903 A RU96114903 A RU 96114903A RU 96114903/09 A RU96114903/09 A RU 96114903/09A RU 96114903 A RU96114903 A RU 96114903A RU 96114903 A RU96114903 A RU 96114903A
- Authority
- RU
- Russia
- Prior art keywords
- signal
- maximum
- minimum
- representation
- frequency
- Prior art date
Links
- 230000000051 modifying Effects 0.000 claims 3
- 230000000903 blocking Effects 0.000 claims 2
- 230000000875 corresponding Effects 0.000 claims 2
- 230000004069 differentiation Effects 0.000 claims 2
- 230000001360 synchronised Effects 0.000 claims 2
Claims (10)
где MIN представляет собой минимальное пиковое отклонение;
MAX представляет собой максимальное пиковое отклонение;
M - количество уровней модуляции.2. The receiver according to claim 1, characterized in that the means for calculating one or a plurality of symbol determination levels comprises means for implementing the algorithm
where MIN represents the minimum peak deviation;
MAX represents the maximum peak deviation;
M is the number of modulation levels.
эта средняя девиация пропорциональна сдвигу между частотой передающего центра и частотой гетеродина, и средство для установления уровня определения символов на значении этой средней девиации.3. The receiver according to claim 1, characterized in that the means for calculating the level of determination of the symbols contains means for calculating the average deviation of the peak deviations, moreover
this average deviation is proportional to the shift between the frequency of the transmitting center and the frequency of the local oscillator, and a means to establish the level of definition of characters on the value of this average deviation.
где MIN представляет собой минимальное пиковое отклонение;
MAX представляет собой максимальное пиковое отклонение;
M - количество уровней модуляции.5. The receiver according to claim 4, characterized in that it has first and second means for accumulating the maximum and minimum values of the count, respectively, a means of replacing the maximum and minimum values, if the count exceeds the current value of the maximum or minimum in the corresponding direction counting, and the means attached to the first and second means for determining the level (s) of the threshold for determining the characters, based on the algorithm
where MIN represents the minimum peak deviation;
MAX represents the maximum peak deviation;
M is the number of modulation levels.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9419630.0 | 1994-09-29 | ||
GB9419630A GB9419630D0 (en) | 1994-09-29 | 1994-09-29 | Receiver having an adjustable symbol slice demodulator |
Publications (2)
Publication Number | Publication Date |
---|---|
RU96114903A true RU96114903A (en) | 1998-09-27 |
RU2151467C1 RU2151467C1 (en) | 2000-06-20 |
Family
ID=10762073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU96114903/09A RU2151467C1 (en) | 1994-09-29 | 1995-09-01 | Receiver with level-based character demodulator |
Country Status (12)
Country | Link |
---|---|
US (1) | US5732110A (en) |
EP (1) | EP0732020B1 (en) |
JP (1) | JP3639595B2 (en) |
KR (1) | KR100350563B1 (en) |
CN (1) | CN1078788C (en) |
BR (1) | BR9506387A (en) |
DE (1) | DE69527937T2 (en) |
GB (1) | GB9419630D0 (en) |
IN (1) | IN184246B (en) |
RU (1) | RU2151467C1 (en) |
TW (1) | TW293207B (en) |
WO (1) | WO1996010309A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6223061B1 (en) * | 1997-07-25 | 2001-04-24 | Cleveland Medical Devices Inc. | Apparatus for low power radio communications |
US7068725B2 (en) * | 2000-07-10 | 2006-06-27 | Garmin At, Inc. | Bit detection threshold in a TDMA burst communication system |
US6317062B1 (en) * | 2000-09-29 | 2001-11-13 | Philsar Semiconductor, Inc. | Method and apparatus for dynamically generating multiple level decision thresholds of an M-ary coded signal |
GB0104280D0 (en) * | 2001-02-21 | 2001-11-21 | Cambridge Silicon Radio Ltd | Estimating frequency offset |
JP3643088B2 (en) * | 2002-04-16 | 2005-04-27 | シャープ株式会社 | Data slicer |
TWI226172B (en) * | 2003-07-14 | 2005-01-01 | Novatek Microelectronics Corp | Non-coherent FSK demodulator |
FR2893802B1 (en) * | 2005-11-23 | 2008-10-17 | Adeunis Rf Sa | DIGITAL DEMODULATOR FOR A Narrow Band FSK RadioELECTRIC RECEIVER AND DEMODULATION METHOD. |
JP4525731B2 (en) * | 2007-10-29 | 2010-08-18 | カシオ計算機株式会社 | Receiver circuit and clock |
US7868689B2 (en) * | 2008-04-08 | 2011-01-11 | Qualcomm Incorporated | Low power slicer-based demodulator for PPM |
JP5304089B2 (en) * | 2008-07-31 | 2013-10-02 | アイコム株式会社 | FSK receiver |
RU2506631C1 (en) * | 2012-07-26 | 2014-02-10 | Юрий Геннадьевич Чирков | Detection method and apparatus |
JP5980111B2 (en) * | 2012-12-28 | 2016-08-31 | アズビル株式会社 | Photoelectric sensor |
DE102014104524B4 (en) * | 2013-10-02 | 2017-07-06 | Silicon Laboratories Inc. | Receiver capable of detecting frequency deviations and methods therefor |
CN115589237B (en) * | 2022-12-13 | 2023-03-17 | 青岛鼎信通讯股份有限公司 | High-frequency current signal branch attribution judging method suitable for electric power field |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE370303B (en) * | 1972-07-03 | 1974-10-07 | L Broger | |
US3947769A (en) * | 1974-10-23 | 1976-03-30 | Hoffman Electronics Corporation | Threshold correction system in FSK transmissions |
IT1109389B (en) * | 1978-12-19 | 1985-12-16 | Selenia Ind Elettroniche | IMPROVEMENT IN MICROWAVE RECEPTION CONVERTERS IN HYBRID WAVE GUIDE STRUCTURES |
DE3329343A1 (en) * | 1983-08-13 | 1985-02-28 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Arrangement for tuning the frequency of a reference oscillator in an FSK receiver |
US4574247A (en) * | 1984-05-21 | 1986-03-04 | Multi-Elmac Company | FM Signal demodulator |
CA2014916C (en) * | 1989-04-20 | 1994-11-08 | Yoichiro Minami | Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency |
US5243299A (en) * | 1992-01-22 | 1993-09-07 | Glenayre Electronics, Inc. | Variable speed asynchronous modem |
SE470077B (en) * | 1992-03-30 | 1993-11-01 | Ericsson Ge Mobile Communicat | Method and apparatus for demodulating a frequency modulated signal |
-
1994
- 1994-09-29 GB GB9419630A patent/GB9419630D0/en active Pending
-
1995
- 1995-09-01 WO PCT/IB1995/000726 patent/WO1996010309A1/en active IP Right Grant
- 1995-09-01 EP EP95928597A patent/EP0732020B1/en not_active Expired - Lifetime
- 1995-09-01 DE DE69527937T patent/DE69527937T2/en not_active Expired - Fee Related
- 1995-09-01 RU RU96114903/09A patent/RU2151467C1/en active
- 1995-09-01 CN CN95190956A patent/CN1078788C/en not_active Expired - Fee Related
- 1995-09-01 JP JP51155496A patent/JP3639595B2/en not_active Expired - Fee Related
- 1995-09-01 KR KR1019960702802A patent/KR100350563B1/en not_active IP Right Cessation
- 1995-09-01 BR BR9506387A patent/BR9506387A/en not_active IP Right Cessation
- 1995-09-11 TW TW084109458A patent/TW293207B/zh active
- 1995-09-25 US US08/533,029 patent/US5732110A/en not_active Expired - Fee Related
- 1995-09-27 IN IN1166CA1995 patent/IN184246B/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
RU96114903A (en) | RECEIVER WITH ADJUSTABLE LEVEL OF SYMBOL DEMODULATOR | |
KR100283291B1 (en) | Synchronizing apparatus | |
US5122758A (en) | Differential phase demodulator for psk-modulated signals | |
EP0702475A1 (en) | Multi-threshold detection for 0.3-GMSK | |
US4312075A (en) | Timing-phase recovery circuit | |
EP0584912A1 (en) | Receiver using a matched filter and a median filter | |
KR100350563B1 (en) | Receiver with adjustable symbol slice demodulator | |
US4651104A (en) | Frequency converter with automatic frequency control | |
RU2099892C1 (en) | Method and device for relative phase modulated signal demodulation | |
EP0170454B1 (en) | Fsk demodulator | |
EP0258697B1 (en) | FSK Signal demodulator | |
JPH11284669A (en) | Data slicer | |
US5339333A (en) | FSK demodulator using signal transitions | |
US4486715A (en) | Frequency shift key demodulator | |
US5999577A (en) | Clock reproducing circuit for packet FSK signal receiver | |
US4499425A (en) | Phase velocity sign detector for frequency shift key demodulation | |
EP1220504A1 (en) | FSK demodulation | |
US7466770B2 (en) | Adaptive pulse width discrimination using an asynchronous clock | |
US20040021510A1 (en) | Demodulation method and demodulator | |
JP3936127B2 (en) | HART demodulation circuit | |
GB2213026A (en) | Control arrangement for a phase shift keying system | |
US5617374A (en) | Signal detection device and clock recovery device using the same | |
US6144253A (en) | Digital FSK demodulator | |
US5781064A (en) | Digital filtering system for filtering digital outputs of a four level FSK demodulator | |
CN107517092A (en) | Method of estimation, signal synchronization and the method, apparatus of demodulation of waveforms detection threshold value |