DE2208610

The terminals in the frequency division multiplexed systems of the prior art employ many steps of modulation whose frequency variations, due to changes in the frequencies generated by the carrier oscillators, add to produce a frequency offset which is unacceptable in modern wideband systems. The ter...

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Main Authors HALEY, THOMAS JOHN, SUMMIT, N.J., US, RONNE, JAMES SAYRE, GROVELAND, MASS., US, MERRICK, THOMAS BENNETT, PLAISTOW, N.H., US
Format Patent
LanguageEnglish
Published 17.09.1981
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
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Summary:The terminals in the frequency division multiplexed systems of the prior art employ many steps of modulation whose frequency variations, due to changes in the frequencies generated by the carrier oscillators, add to produce a frequency offset which is unacceptable in modern wideband systems. The terminals of the present invention use additional modulators connected to the carrier oscillators to reduce the frequency offset of the transmitted signal to the frequency variations of only a single oscillator.
Bibliography:Application Number: DE19722208610