DE19745432A1 - Verfahren und Vorrichtung zur schnellen Pilotkanalerfassung unter Verwendung eines Optimalfilters bei einem CDMA-Sprechfunkgerät - Google Patents
Verfahren und Vorrichtung zur schnellen Pilotkanalerfassung unter Verwendung eines Optimalfilters bei einem CDMA-SprechfunkgerätInfo
- Publication number
- DE19745432A1 DE19745432A1 DE19745432A DE19745432A DE19745432A1 DE 19745432 A1 DE19745432 A1 DE 19745432A1 DE 19745432 A DE19745432 A DE 19745432A DE 19745432 A DE19745432 A DE 19745432A DE 19745432 A1 DE19745432 A1 DE 19745432A1
- Authority
- DE
- Germany
- Prior art keywords
- response
- sequence
- receiver
- base station
- filter
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/76—Pilot transmitters or receivers for control of transmission or for equalising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
- H04B1/7093—Matched filter type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
- H04B7/2637—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for logical channel control
Description
Claims (10)
einen Gabelempfänger (112) mit einer Vielzahl von Empfängerkontaktfingern (122, 124, 126),
eine Empfängersuchlaufteil (114) zum Erfassen von Pilotsignalen von der Viel zahl von Basisstationen (102), wobei das Empfängersuchlaufteil einen Optimalfilter (128) und/oder einen angepaßten Filter (128) zum Vergleichen einer erfaßten PN-Folge und einer vorgegebenen PN-Folge und zum Erzeugen einer Antwort aufweist; und
ein Steuerteil (116), das mit dem Empfängersuchlaufteil (114) und dem Gabel empfänger (112) gekoppelt ist und einen Speicher (132) zum Abspeichern der Antwort als gespeicherte Antwort umfaßt, wobei das Steuerteil (116) die Vielzahl von Empfän gerkontaktfingern (122, 124, 126) insbesondere als Antwort der gespeicherten Antwort ansteuert.
Erfassung von Pilotsignalen, von denen jedes von einer jeweiligen kurzen Folge von Pseudorauschstörungen und/oder pseudozufälligen Störungen (PN) abgedeckt ist;
Einsatz eines Optimalfilters und/oder eines angepaßten Filters, mit welchem jede kurze PN-Folge mit einer vorgegebenen PN-Folge verglichen wird; und
Erzeugen eines Übereinstimmungssignals, wenn eine kurze PN-Folge mit der vorgegebenen PN-Folge übereinstimmt.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/741,183 US5950131A (en) | 1996-10-29 | 1996-10-29 | Method and apparatus for fast pilot channel acquisition using a matched filter in a CDMA radiotelephone |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19745432A1 true DE19745432A1 (de) | 1998-05-07 |
DE19745432C2 DE19745432C2 (de) | 2001-05-03 |
Family
ID=24979714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19745432A Expired - Fee Related DE19745432C2 (de) | 1996-10-29 | 1997-10-15 | Verfahren und Vorrichtung zur schnellen Pilotkanalerfassung unter Verwendung eines Optimalfilters bei einem CDMA-Sprechfunkgerät |
Country Status (9)
Country | Link |
---|---|
US (1) | US5950131A (de) |
JP (1) | JP4057111B2 (de) |
KR (1) | KR100253104B1 (de) |
CN (1) | CN1086541C (de) |
AR (1) | AR009797A1 (de) |
BR (1) | BR9705310A (de) |
CA (1) | CA2213960C (de) |
DE (1) | DE19745432C2 (de) |
GB (1) | GB2318952B (de) |
Cited By (1)
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-
1996
- 1996-10-29 US US08/741,183 patent/US5950131A/en not_active Expired - Lifetime
-
1997
- 1997-08-25 CA CA002213960A patent/CA2213960C/en not_active Expired - Fee Related
- 1997-09-18 AR ARP970104283A patent/AR009797A1/es active IP Right Grant
- 1997-09-22 GB GB9720012A patent/GB2318952B/en not_active Expired - Fee Related
- 1997-10-08 JP JP29355097A patent/JP4057111B2/ja not_active Expired - Fee Related
- 1997-10-15 DE DE19745432A patent/DE19745432C2/de not_active Expired - Fee Related
- 1997-10-27 CN CN97119929A patent/CN1086541C/zh not_active Expired - Fee Related
- 1997-10-27 BR BR9705310-4A patent/BR9705310A/pt not_active Application Discontinuation
- 1997-10-28 KR KR1019970055503A patent/KR100253104B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10001854A1 (de) * | 2000-01-18 | 2001-08-02 | Infineon Technologies Ag | Verfahren und Vorrichtung zur Ermittlung der Trägerfrequenz von Basisstationen im mobilen Empfänger eines mit W-CDMA arbeitenden zellularen Mobilfunksystems |
Also Published As
Publication number | Publication date |
---|---|
GB2318952A (en) | 1998-05-06 |
CN1185705A (zh) | 1998-06-24 |
AR009797A1 (es) | 2000-05-03 |
CN1086541C (zh) | 2002-06-19 |
DE19745432C2 (de) | 2001-05-03 |
JPH10145333A (ja) | 1998-05-29 |
KR19980033222A (ko) | 1998-07-25 |
US5950131A (en) | 1999-09-07 |
BR9705310A (pt) | 2001-03-20 |
KR100253104B1 (ko) | 2000-04-15 |
GB9720012D0 (en) | 1997-11-19 |
GB2318952B (en) | 2001-06-20 |
JP4057111B2 (ja) | 2008-03-05 |
CA2213960C (en) | 2001-01-02 |
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