AU581038B2 - Radiocommunication system - Google Patents
Radiocommunication systemInfo
- Publication number
- AU581038B2 AU581038B2 AU50339/85A AU5033985A AU581038B2 AU 581038 B2 AU581038 B2 AU 581038B2 AU 50339/85 A AU50339/85 A AU 50339/85A AU 5033985 A AU5033985 A AU 5033985A AU 581038 B2 AU581038 B2 AU 581038B2
- Authority
- AU
- Australia
- Prior art keywords
- radiocommunication system
- radiocommunication
- 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.)
- Ceased
Links
Classifications
-
- 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
- H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
- H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
- H04L27/2014—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes in a piecewise linear manner during each symbol period, e.g. minimum shift keying, fast frequency shift keying
-
- 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
- H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
- H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE901232 | 1984-12-07 | ||
BE2/60561A BE901232A (en) | 1984-12-07 | 1984-12-07 | RADIOCOMMUNICATION SYSTEM. |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU24159/88A Division AU2415988A (en) | 1984-12-07 | 1988-10-24 | An fsk modulator |
Publications (2)
Publication Number | Publication Date |
---|---|
AU5033985A AU5033985A (en) | 1986-06-12 |
AU581038B2 true AU581038B2 (en) | 1989-02-09 |
Family
ID=3865721
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU50339/85A Ceased AU581038B2 (en) | 1984-12-07 | 1985-11-25 | Radiocommunication system |
AU24159/88A Withdrawn AU2415988A (en) | 1984-12-07 | 1988-10-24 | An fsk modulator |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU24159/88A Withdrawn AU2415988A (en) | 1984-12-07 | 1988-10-24 | An fsk modulator |
Country Status (4)
Country | Link |
---|---|
AU (2) | AU581038B2 (en) |
BE (1) | BE901232A (en) |
GB (1) | GB2168878B (en) |
NZ (1) | NZ214299A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NZ243007A (en) * | 1991-06-19 | 1995-02-24 | Ericsson Telefon Ab L M | Radio telephony: digital speech codec provided at regional stations for analog transmissions |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4412339A (en) * | 1981-09-24 | 1983-10-25 | Advanced Micro Devices, Inc. | Zero-crossing interpolator to reduce isochronous distortion in a digital FSK modem |
US4570126A (en) * | 1982-06-23 | 1986-02-11 | U.S. Philips Corporation | FM Demodulator using interpolation to approximate zero crossings |
US4696018A (en) * | 1983-12-24 | 1987-09-22 | Itt Industries, Inc. | Digital FM detector for digitized FM signals |
-
1984
- 1984-12-07 BE BE2/60561A patent/BE901232A/en not_active IP Right Cessation
-
1985
- 1985-11-22 GB GB08528828A patent/GB2168878B/en not_active Expired
- 1985-11-22 NZ NZ21429985A patent/NZ214299A/en unknown
- 1985-11-25 AU AU50339/85A patent/AU581038B2/en not_active Ceased
-
1988
- 1988-10-24 AU AU24159/88A patent/AU2415988A/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4412339A (en) * | 1981-09-24 | 1983-10-25 | Advanced Micro Devices, Inc. | Zero-crossing interpolator to reduce isochronous distortion in a digital FSK modem |
US4570126A (en) * | 1982-06-23 | 1986-02-11 | U.S. Philips Corporation | FM Demodulator using interpolation to approximate zero crossings |
US4696018A (en) * | 1983-12-24 | 1987-09-22 | Itt Industries, Inc. | Digital FM detector for digitized FM signals |
Also Published As
Publication number | Publication date |
---|---|
GB2168878B (en) | 1989-02-01 |
GB8528828D0 (en) | 1985-12-24 |
BE901232A (en) | 1985-06-07 |
NZ214299A (en) | 1988-09-29 |
AU5033985A (en) | 1986-06-12 |
GB2168878A (en) | 1986-06-25 |
AU2415988A (en) | 1989-01-27 |
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