EP1116366A1 - Transmodulation entre les signaux gmsk-modules et des signaux mdpq-modules - Google Patents
Transmodulation entre les signaux gmsk-modules et des signaux mdpq-modulesInfo
- Publication number
- EP1116366A1 EP1116366A1 EP99969868A EP99969868A EP1116366A1 EP 1116366 A1 EP1116366 A1 EP 1116366A1 EP 99969868 A EP99969868 A EP 99969868A EP 99969868 A EP99969868 A EP 99969868A EP 1116366 A1 EP1116366 A1 EP 1116366A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- qpsk
- modulated data
- controller
- gfsk
- dect
- 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.)
- Withdrawn
Links
- 238000006243 chemical reaction Methods 0.000 title description 6
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims description 39
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000013589 supplement Substances 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
- H04L27/18—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
- H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
-
- 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
Definitions
- a suitable module which enables signals from an existing DECT controller to be to transfer based systems (e.g. PWT).
- This module can be implemented, for example, in the form of an ASIC or in any other form.
- This module must implement the following functions:
- FIG. 5 shows a mobile radio device which can be a base station or a mobile station.
- a DECT baseband controller 22 is provided.
- This baseband controller 22 has, among other things, a modulator / demodulator.
- an additional ballast module 23 is provided, which can be implemented, for example, by an ASIC.
- the ASIC 23 When receiving QPSK-modulated data, which the high-frequency module 4, 5 transmits to the ASIC 23 and which can also contain a synchronization word in addition to the user data, the ASIC 23 continues to provide synchronization information together with the actual user data GFSK-modulated to the DECT base station. band controller 22.
- the GFSK modulator / demodulator 20, 21 of the DECT baseband controller 22 outputs GFSK-modulated data to the ASIC 23.
- the ASIC 23 converts the GFSK-modulated data into QPSK-modulated data and transmits it them to the high-frequency module 4, 5 of the DECT baseband controller.
- the high-frequency module 4, 5 then outputs this QPSK-modulated data to the antenna 6, 7.
- DECT baseband controllers 22 are required for synchronization.
- the ballast module 23 which implements the conversion between the QPSK and the GFSK modulation method, transmits the DECT baseband controller 22 in its synchronized state permanently to a DECT synchronization signal (1, 0 - Episode).
- the DECT baseband controller 22 can thus synchronize with this sequence of the DECT synchronization signal from the ballast module 23.
- Antenna mobile station 8 first radio transmission link
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
L'invention concerne un contrôleur DECT servant à transmettre des données à l'aide d'un procédé à MDPQ. A cet effet, il est prévu un module monté en amont (23) qui convertit les données modulées par GMSK, émises par le contrôleur DECT (22), en données modulées par MDPQ, à envoyer. Le module monté en amont (23) peut être par exemple un circuit intégré spécifique. Le module monté en amont (23) peut en outre piloter un module H.F. (4,5) du contrôleur DECT (22), de manière que les données soient par exemple modulées sur une fréquence porteuse de la plage 2,4 GHz-ISM. On peut dès lors obtenir un système pour la plage 2,4 GHz-ISM pouvant satisfaire aux exigences (FCC partie 15) de cette plage, du fait qu'on utilise une modulation de type MDPQ et que la fréquence porteuse est changée au bout d'une période prédéterminée (système à spectre étalé à sauts de fréquence). On peut simultanément utiliser un contrôleur DECT classique de manière économique.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19844165 | 1998-09-25 | ||
| DE19844097 | 1998-09-25 | ||
| DE1998144097 DE19844097A1 (de) | 1998-09-25 | 1998-09-25 | Umsetzung von GFSK-modulierten Signalen in QPSK-modulierte Signale |
| DE19844165 | 1998-09-25 | ||
| PCT/DE1999/003057 WO2000019674A1 (fr) | 1998-09-25 | 1999-09-23 | Transmodulation entre les signaux gmsk-modules et des signaux mdpq-modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1116366A1 true EP1116366A1 (fr) | 2001-07-18 |
Family
ID=26049092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99969868A Withdrawn EP1116366A1 (fr) | 1998-09-25 | 1999-09-23 | Transmodulation entre les signaux gmsk-modules et des signaux mdpq-modules |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1116366A1 (fr) |
| WO (1) | WO2000019674A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8103064A (nl) * | 1981-06-25 | 1983-01-17 | Philips Nv | Gemeenschappelijke antenne-inrichting voor de ontvangst en distributie van tv- en digitale audiosignalen. |
| US4592009A (en) * | 1983-11-17 | 1986-05-27 | E-Systems, Inc. | MSK surface acoustic wave convolver |
| US5408259A (en) * | 1993-12-30 | 1995-04-18 | Northern Telecom Limited | Data modulation arrangement for selectively distributing data |
-
1999
- 1999-09-23 EP EP99969868A patent/EP1116366A1/fr not_active Withdrawn
- 1999-09-23 WO PCT/DE1999/003057 patent/WO2000019674A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0019674A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000019674A1 (fr) | 2000-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20010104 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20030401 |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT NL |