Multiplex communications – Wide area network – Packet switching
Patent
1984-11-13
1988-06-21
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 75, H04J 306
Patent
active
047529253
ABSTRACT:
A two-hop communications system utilizing two collocated spacecraft (Se and Sw) and two remote intersatellite exchange (RISE) means (Re and Rw) provides for communications between ground stations located in two or more defined subregions. Each satellite includes wide band transponders for relaying ground station transmissions to the RISEs. The RISEs convert first hop frequency division multiplexed (FDM) signals to time division multiplexed (TDM) for the second hop. Signals are coded by frequency, polarization and direction so as to avoid loss of bandwidth due to the two-hop approach.
REFERENCES:
patent: 4004098 (1977-01-01), Shimasaki
Pressman Leeor
Rosen Harold A.
Thompson James D.
Hughes Aircraft Company
Karambelas A. W.
Meltzer Mark J.
Mitchell Steven M.
Olms Douglas W.
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