A bipolar violation, bipolarity violation, or BPV, is a violation of the bipolar encoding rules where two pulses of the same polarity occur without an intervening pulse of the opposite polarity. This indicates an error in the transmission of the signal.
T-carrier and E-carrier signals are transmitted using a scheme called bipolar encoding, a.k.a. Alternate Mark Inversion (AMI), where ONE is represented by a pulse, and a ZERO is represented by no pulse. Pulses (which represent ones) always alternate in polarity, so that if, for example two positive pulses are received in succession, the receiver knows that an error occurred (a violation) in that one or more bits were either added or deleted from the original signal.
Reliable transmission of data using this scheme requires a regular stream of pulses; too many zero bits in succession can cause a loss of synchronization between transmitter and receiver. To ensure that this is always present, there exist a number of modified AMI codes which use judiciously placed bipolar violations to encode long strings of consecutive zeroes.
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bipolar, violation, this, article, does, cite, sources, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2009, learn, when, r. This article does not cite any sources Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Bipolar violation news newspapers books scholar JSTOR December 2009 Learn how and when to remove this message A bipolar violation bipolarity violation or BPV is a violation of the bipolar encoding rules where two pulses of the same polarity occur without an intervening pulse of the opposite polarity This indicates an error in the transmission of the signal T carrier and E carrier signals are transmitted using a scheme called bipolar encoding a k a Alternate Mark Inversion AMI where ONE is represented by a pulse and a ZERO is represented by no pulse Pulses which represent ones always alternate in polarity so that if for example two positive pulses are received in succession the receiver knows that an error occurred a violation in that one or more bits were either added or deleted from the original signal Reliable transmission of data using this scheme requires a regular stream of pulses too many zero bits in succession can cause a loss of synchronization between transmitter and receiver To ensure that this is always present there exist a number of modified AMI codes which use judiciously placed bipolar violations to encode long strings of consecutive zeroes This article related to telecommunications is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Bipolar violation amp oldid 926330087, wikipedia, wiki, book, books, library,
