JPS4884519A - - Google Patents
Info
- Publication number
- JPS4884519A JPS4884519A JP48010614A JP1061473A JPS4884519A JP S4884519 A JPS4884519 A JP S4884519A JP 48010614 A JP48010614 A JP 48010614A JP 1061473 A JP1061473 A JP 1061473A JP S4884519 A JPS4884519 A JP S4884519A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
- H04B7/18534—Arrangements for managing transmission, i.e. for transporting data or a signalling message for enhancing link reliablility, e.g. satellites diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/212—Time-division multiple access [TDMA]
- H04B7/2125—Synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2203575A DE2203575C3 (de) | 1972-01-26 | 1972-01-26 | Schaltungsanordnung zur Synchronisation der Impulsbündel bei Nachrichtenübertragung nach dem Zeitmultiplexverfahren über Fernmeldesatelliten mit mehreren schmalbündelnden Richtantennen |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4884519A true JPS4884519A (ja) | 1973-11-09 |
Family
ID=5834075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP48010614A Pending JPS4884519A (ja) | 1972-01-26 | 1973-01-25 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3858007A (ja) |
JP (1) | JPS4884519A (ja) |
CA (1) | CA1001784A (ja) |
DE (1) | DE2203575C3 (ja) |
FR (1) | FR2169047B1 (ja) |
IT (1) | IT973073B (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS577490B2 (ja) * | 1974-02-26 | 1982-02-10 | ||
IT1037853B (it) * | 1974-05-21 | 1979-11-20 | Licentia Gmbh | Procedimento e disposizione dei circuiti per la sincronizzazione di quadri di impulsi nella trasmissione delle informazioni secondo il sistema multiplex a divisione di tempo attraverso satelliti di telecomunicazione |
US3982075A (en) * | 1974-09-09 | 1976-09-21 | The Post Office | Synchronization system for time division multiple access relay communications system |
DE2615198C3 (de) * | 1976-04-08 | 1979-08-16 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Nachrichtenübertragungssystem zum zweiseitig gerichteten Nachrichtenverkehr zwischen einer Hauptstation und mehreren Unterstationen über einen Satelliten |
US4061974A (en) * | 1976-06-21 | 1977-12-06 | Nasa | Ultra stable frequency distribution system |
US4105973A (en) * | 1976-10-15 | 1978-08-08 | Bell Telephone Laboratories, Incorporated | Multibeam, digitally modulated, time division, switched satellite communications system |
US4587661A (en) * | 1983-03-04 | 1986-05-06 | Rca Corporation | Apparatus for synchronizing spread spectrum transmissions from small earth stations used for satellite transmission |
US4639937A (en) * | 1983-12-07 | 1987-01-27 | Harris Corporation | HF avalanche relay communication technique |
US4630267A (en) * | 1983-12-23 | 1986-12-16 | International Business Machines Corporation | Programmable timing and synchronization circuit for a TDMA communications controller |
DE3727235A1 (de) * | 1987-08-14 | 1989-02-23 | Siemens Ag | Einrichtung zur zeitmultiplexen uebertragung von signalen |
GB2321831B (en) * | 1994-07-22 | 1999-02-17 | Int Mobile Satellite Org | Satellite communication method and apparatus |
US5659545A (en) * | 1994-11-15 | 1997-08-19 | Motorola, Inc. | Apparatus for mobile unit acquisition in a satellite communication system and method therefor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3678387A (en) * | 1970-08-05 | 1972-07-18 | Us Air Force | Satellite communications system |
-
1972
- 1972-01-26 DE DE2203575A patent/DE2203575C3/de not_active Expired
- 1972-12-28 IT IT33766/72A patent/IT973073B/it active
- 1972-12-28 FR FR7246741A patent/FR2169047B1/fr not_active Expired
-
1973
- 1973-01-23 US US00326042A patent/US3858007A/en not_active Expired - Lifetime
- 1973-01-25 JP JP48010614A patent/JPS4884519A/ja active Pending
- 1973-01-25 CA CA162,063A patent/CA1001784A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2169047B1 (ja) | 1977-02-25 |
US3858007A (en) | 1974-12-31 |
FR2169047A1 (ja) | 1973-09-07 |
DE2203575A1 (de) | 1973-08-09 |
IT973073B (it) | 1974-06-10 |
CA1001784A (en) | 1976-12-14 |
DE2203575B2 (de) | 1975-04-10 |
DE2203575C3 (de) | 1975-11-27 |