Telephonic communications – Centralized switching system – With generating of call associated substation signal
Patent
1994-11-18
1997-03-18
Marcelo, Melvin
Telephonic communications
Centralized switching system
With generating of call associated substation signal
370468, 455 8, 455 111, H04B 714
Patent
active
056129483
ABSTRACT:
A cellular communication network (10) and method operates at frequencies above 2 GHz and achieves widespread coverage within a cell (14) by adapting routing channels, symbol rates, and FEC coding processes (78) to current RF broadcast conditions. A portion of subscriber nodes (16) act as repeaters for a base node (12). If subscriber nodes (16) cannot directly communicate with the base node (12), their communications may be indirectly routed to the base node (12) through one or more repeating subscriber nodes (16'). If current conditions do not support a high data rate, then lower data rates are supported by selection of FEC coding processes (78). If increasingly inclusive FEC coding does not achieve a data rate supportable by current conditions, slower symbol rates may be used. Communications at slower symbol rates may utilize narrower frequency bands thus keeping wider frequency bands available for higher speed usage.
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Fette Bruce A.
Harrison David M.
Leahy Peter J.
Botsch Sr. Bradley J.
Marcelo Melvin
Motorola Inc.
Nehr Jeffrey D.
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