JPS55130249A - Code synchronous system for reception of spectrum diffusion signal - Google Patents
Code synchronous system for reception of spectrum diffusion signalInfo
- Publication number
- JPS55130249A JPS55130249A JP3684179A JP3684179A JPS55130249A JP S55130249 A JPS55130249 A JP S55130249A JP 3684179 A JP3684179 A JP 3684179A JP 3684179 A JP3684179 A JP 3684179A JP S55130249 A JPS55130249 A JP S55130249A
- Authority
- JP
- Japan
- Prior art keywords
- output
- control
- counter
- vco6
- vco
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/042—Detectors therefor, e.g. correlators, state machines
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
PURPOSE:To realize the delay synchronous system which features a short lock-in time and also can maintain the steady synchronous state, by providing the integrator and the sample holding circuit in place of the loop filter. CONSTITUTION:The output of correlater units 21 and 22 are compounded at compounding circuit 3 and then supplied to voltage control oscillator (VCO) 6 through integrator 7 and sample holding circuit 8 to give the control to the oscillation frequency of the VCO. The oscillation output of VCO6 is applied to local code generator 11 to give the control to the code signal phase of the output. On the other hand, sampling pulse generator 9 consists of variable divider 91 which divides the output of VCO6, division ratio setting counter 92 of divider 91, and pulse generator 93 which gives the count pulse to counter 92 each. And counter 92 receives the control for the start, stop and reset of its counting action via the start/stop/reset signal given from outside.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54036841A JPS6028170B2 (en) | 1979-03-30 | 1979-03-30 | Code synchronization method for reception of spread spectrum signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54036841A JPS6028170B2 (en) | 1979-03-30 | 1979-03-30 | Code synchronization method for reception of spread spectrum signals |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55130249A true JPS55130249A (en) | 1980-10-08 |
JPS6028170B2 JPS6028170B2 (en) | 1985-07-03 |
Family
ID=12480974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54036841A Expired JPS6028170B2 (en) | 1979-03-30 | 1979-03-30 | Code synchronization method for reception of spread spectrum signals |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6028170B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57141154A (en) * | 1981-02-25 | 1982-09-01 | Sony Corp | Receiver on spectrum spread communication system |
JPS58175332A (en) * | 1982-03-10 | 1983-10-14 | ソーン イーエムアイ パテンツ リミテッド | Channel communication system |
JPS63262932A (en) * | 1987-04-20 | 1988-10-31 | Sony Corp | Delay lock loop circuit |
JPH0423534A (en) * | 1990-05-17 | 1992-01-27 | Sekiyu Kodan | Transmission system for mwd |
JP2010160077A (en) * | 2009-01-08 | 2010-07-22 | Building Research Institute | Portable pull-out tester |
-
1979
- 1979-03-30 JP JP54036841A patent/JPS6028170B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57141154A (en) * | 1981-02-25 | 1982-09-01 | Sony Corp | Receiver on spectrum spread communication system |
JPH0239139B2 (en) * | 1981-02-25 | 1990-09-04 | Sony Corp | |
JPS58175332A (en) * | 1982-03-10 | 1983-10-14 | ソーン イーエムアイ パテンツ リミテッド | Channel communication system |
JPH0374542B2 (en) * | 1982-03-10 | 1991-11-27 | ||
JPS63262932A (en) * | 1987-04-20 | 1988-10-31 | Sony Corp | Delay lock loop circuit |
JPH0423534A (en) * | 1990-05-17 | 1992-01-27 | Sekiyu Kodan | Transmission system for mwd |
JP2010160077A (en) * | 2009-01-08 | 2010-07-22 | Building Research Institute | Portable pull-out tester |
Also Published As
Publication number | Publication date |
---|---|
JPS6028170B2 (en) | 1985-07-03 |
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