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Bipolar Encoding: Telecommunication, Line code, Repeater, Non-return-to-zero, Frame synchronization, T-carrier, Pulse- code modulation, Error detectio
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available from Wikipedia or other free sources online. In
telecommunication, bipolar encoding is a type of line code (a method of
encoding digital information to make it resistant to certain forms of
signal loss during transmission). A duobinary signal is such an
encoding. A binary 0 is encoded as zero volts as in unipolar encoding. A
binary 1 is encoded alternately as a positive voltage and a negative
voltage. This prevents a significant build-up of DC, as the positive and
negative pulses average to zero volts. Little or no DC-component is
considered an advantage because the cable may then be used for longer
distances and to carry power for intermediate equipment such as line
repeaters. The DC-component can be easily and cheaply removed before the
signal reaches the decoding circuitry. |
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i.d.R. innert 7-14 Tagen versandfertig
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