Transmission system of frequency division multiplex signals on d

Details Transmission system of frequency division multiplex signals on d Transmission system of frequency division multiplex signals on d

1979-12-27

1982-01-26

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

375 17, 375 25, 370118, H04H 102

Patent

active

043131948

ABSTRACT:
Transmission system of frequency division multiplex signals on a digital link. At the transmitting end of the digital line, the frequency division multiplex signals are sampled and coded into n-bit sample words. These sample words are transcoded into p-bit on-line words with p smaller than n through a transcoding procedure which makes a plurality k of successive levels of the n-bit code correspond to one and the same level of the p-bit code. The number k is selected depending on the maximal level reached by a sample word in a block of successive sample words. The number k is transmitted to the receiving end of the digital link by a control word for reverse transcoding of the on-line p-bit words into reconstituted n-bit sample words.

REFERENCES:
patent: 3735264 (1973-05-01), Mauduech
patent: 4013842 (1977-03-01), Kao et al.
patent: 4131766 (1978-12-01), Narasimha
patent: 4193096 (1980-03-01), Stoffel

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