Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1996-03-13
1999-01-12
Mullen, Jr., Thomas J.
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
370317, 455303, H04B 718
Patent
active
058600574
ABSTRACT:
A satellite communications system and method capable of bidirectional satellite communications between earth stations via a satellite, whereby communications by a plurality of signals sharing the same frequency band become possible while partially or wholly superposing respective signal frequencies. Each earth station including: a transmission circuit for transmitting a local transmission signal toward the satellite; a reception circuit for receiving a remote transmission signal transmitted from a remote earth station and a return signal, the return signal being part of the local transmission signal transmitted from the local earth station toward the satellite and partially returned from the satellite and received at the local earth station; and a cancelling circuit being supplied with part of the local transmission signal and the received return signal, for cancelling the received return signal by part of the local transmission signal.
REFERENCES:
patent: 3596002 (1971-07-01), Ohnsorge et al.
patent: 3963990 (1976-06-01), DiFonzo
patent: 5235612 (1993-08-01), Stilwell et al.
patent: 5428600 (1995-06-01), Potier
patent: 5444864 (1995-08-01), Smith
patent: 5625640 (1997-04-01), Palmer et al.
Feher, Dr. Kamilo, Single-Channel-Per-Carrier (SCPC) Preassigned and Demand-Assigned, Spade, Digital Satellite Earth Stations, Digital Communications, Satellite/Earth Station Engineering, 1981, Chapter 10, pp. 422-439.
Satellite Communications Handbook, International Telecommunication Union, Geneva, 1988, pp. 128-139; pp. 332-335.
VSAT Systems and Earth Stations, Handbook on Satellite Communications, International Telecommunication Union, Supplement No. 3, pp. 4-13.
Bhargava, Vijay K. et al., Digital Communications by Satellite, 1981, pp. 18-23; pp. 436-439.
Ishida Noriaki
Uchida Toyoaki
Hitachi , Ltd.
Mullen Jr. Thomas J.
LandOfFree
Satellite communications system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Satellite communications system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Satellite communications system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1524751