Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1993-01-29
1994-11-01
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 676, 375107, H04B 700
Patent
active
053613988
ABSTRACT:
A simulcast transmission system (100) utilizes adaptive demodulation to provide a method and apparatus for automatic delay equalization measurements. The simulcast transmission system (100) comprises a control station (101), and a plurality of remote transmission stations (201, 301) capable of re-transmitting a received delay equalization measurement signal which includes at least a correction bit pattern signal followed by a synchronization pattern signal. The control station (101) comprises a transmitter (131, 181) which transmits the delay equalization measurement signal, a receiver (151, 191) which receives the re-transmitted delay equalization measurement signal, a correlator (115, 762) which correlates the received synchronization pattern signal to obtain a coarse time of reception, a correction bit pattern analyzer (115, 776-802) which analyzes the received correction bit pattern signal to derive a fine reception time correction factor, and a time corrector (115, 804) which corrects the coarse time of reception with the fine reception time correction factor to obtain a corrected time of reception of the delay equalization measurement signal at the control station (101).
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Christian Paul R.
Karczewski Casimir
Berry Thomas G.
Eisenzopf Reinhard J.
Faile Andrew
Macnak Philip P.
Motorola Inc.
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