Method for processing signals for signal transmission in the bas

Details Method for processing signals for signal transmission in the bas Method for processing signals for signal transmission in the bas

1991-06-03

1994-03-22

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375 17, 379 93, 370 321, H04B 138, H04C 516

Patent

active

052971635

ABSTRACT:
The present invention relates to a method of using a modem for processing signals for signal transmission in the base band on a two-wire line. In order to reduce coupling to adjacent channels in the two-wire line, and to reduce effective line attenuation, it is proposed that the signal that is to be transmitted in a process of the above type be encoded such that each three transmit bits are combined to form a tri-bit, and one of eight discriminable sender levels for a main data channel are associated with each tri-bit, whereby the modulation rate of the symbols on the line is reduced to one-third of the bit rate.

REFERENCES:
patent: 3781873 (1973-12-01), Nussbaumer
patent: 4924492 (1990-05-01), Gitlin et al.

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