Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1990-03-19
1991-05-07
Kuntz, Curtis
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 56, 34082544, 375107, H04B 100
Patent
active
050143441
ABSTRACT:
A method for synchronizing message transmissions in a simulcast transmitter system is described. A master controller couples to a plurality of regional controllers for enabling message transmissions and for initiating delay measurement signal transmissions in each of a plurality of regions. The master controller generates a first delay measurement signal which is transmitted from a selected one of a plurality of regional transmitters operating within a first transmission region. The regional controller within the first transmission region measures the propagation delay of the selected one of the plurality of regional transmitters within the first transmission region. The master controller next generates a second delay measurement signal which is transmitted from a selected one of the plurality of regional transmitters operating within a second transmission region adjacent to the first transmission region. The regional controller within the first transmission region measures the propagation delay of the selected one of the plurality of regional transmitters within the second transmission region. The intra-regional differential propagation delay is computed from the measurements of the propagation delays measured from the first and second transmission regions. The additional transmission delay is computed for each of the regional transmitters within the first and second transmission regions, and the transmission delays for each regional transmitter are adjusted to equalize the intra-regional differential transmission delays between the first and second transmission regions.
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Ingrassia Vincent B.
Koch William E.
Kuntz Curtis
Macnak Philip P.
Motorola Inc.
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