Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co LtdfiledCriticalNEC Corp
Priority to JP4457476ApriorityCriticalpatent/JPS6013346B2/en
Publication of JPS52127148ApublicationCriticalpatent/JPS52127148A/en
Publication of JPS6013346B2publicationCriticalpatent/JPS6013346B2/en
Digital Transmission Methods That Use Modulated Carrier Waves
(AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo
(AREA)
Abstract
PURPOSE: To control the phase of the demodulated carrier automatically and suitably by combining the receiving modulated carrier to the automatic equalizer in the transmission system by the vestigial side-band amplitude modulation of the multi-level PAM signal.