NO912034L - PROCEDURE FOR USING A CORRELATION TECHNIQUE AA DETERMINE THE TIME FOR RECEIVING A SIGNAL. - Google Patents
PROCEDURE FOR USING A CORRELATION TECHNIQUE AA DETERMINE THE TIME FOR RECEIVING A SIGNAL.Info
- Publication number
- NO912034L NO912034L NO91912034A NO912034A NO912034L NO 912034 L NO912034 L NO 912034L NO 91912034 A NO91912034 A NO 91912034A NO 912034 A NO912034 A NO 912034A NO 912034 L NO912034 L NO 912034L
- Authority
- NO
- Norway
- Prior art keywords
- correlation
- time
- code
- signal
- receiving
- Prior art date
Links
Landscapes
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Fremgangsmåte for å bestemme tidspunktet et signal som inneholder en forhåndsbestemt kode, for eksempel en Barker-kode, mottas. Koden kan være til stede ved starten av et telegram som skal mottas av en mobil radiostasjon fra en basestasjon. Signalet korreleres med en korresponderende kode lagret i et minne. Korrelasjonen utfares ved ulike tidspunkt. Dette gir en korrelasjonskurve. Spissen representerer peak-korrelasjon. Tids- punktet for optimal korrelasjon bestemmes ved å ekstrapolere sidene til spisse. Oppfinnelsen tilveiebringer også en nullkryssings-detektor for å ta tiden ved nullkryssings-hendelser, hvorved det er mulig å ta tiden ved mottak av koden til- strekkelig nøyaktig til å muliggjøre meningsfull korrelasjon.A method for determining when a signal containing a predetermined code, such as a Barker code, is received. The code may be present at the start of a telegram to be received by a mobile radio station from a base station. The signal is correlated with a corresponding code stored in a memory. The correlation is performed at different times. This gives a correlation curve. The tip represents peak correlation. The time for optimal correlation is determined by extrapolating the sides to the tip. The invention also provides a zero-crossing detector for taking time at zero-crossing events, whereby it is possible to take the time at receiving the code sufficiently accurate to allow meaningful correlation.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB888827732A GB8827732D0 (en) | 1988-11-28 | 1988-11-28 | Method of determination of signal reception time by means of correlation technique |
GB888827734A GB8827734D0 (en) | 1988-11-28 | 1988-11-28 | Zero crossing detector |
PCT/DK1989/000280 WO1990006642A1 (en) | 1988-11-28 | 1989-11-24 | Method of determination of signal reception time by means of correlation technique |
Publications (2)
Publication Number | Publication Date |
---|---|
NO912034D0 NO912034D0 (en) | 1991-05-27 |
NO912034L true NO912034L (en) | 1991-07-26 |
Family
ID=27222221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO91912034A NO912034L (en) | 1988-11-28 | 1991-05-27 | PROCEDURE FOR USING A CORRELATION TECHNIQUE AA DETERMINE THE TIME FOR RECEIVING A SIGNAL. |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI912533A0 (en) |
NO (1) | NO912034L (en) |
-
1991
- 1991-05-27 FI FI912533A patent/FI912533A0/en not_active Application Discontinuation
- 1991-05-27 NO NO91912034A patent/NO912034L/en unknown
Also Published As
Publication number | Publication date |
---|---|
FI912533A0 (en) | 1991-05-27 |
NO912034D0 (en) | 1991-05-27 |
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