What is a "Frequency Scrambler"? The Most Authoritative Explanation.
What is a scrambler in telecommunications?
Jump to navigation Jump to search. In telecommunications, a scrambler is a device that transposes or inverts signals or otherwise encodes a message at the sender's side to make the message unintelligible at a receiver not equipped with an appropriately set descrambling device.What is a descrambler and how does it work?
A descrambler is a device that restores the picture and sound of a scrambled channel. A descrambler must be used with a cable converter box to be able to unencrypt all of the premium & pay-per-view channels of a Cable Television System.How to extend the random sequence of an additive scrambler?
The effective length of the random sequence of an additive scrambler is limited by the frame length, which is normally much shorter than the period of the PRBS. By adding frame numbers to the frame sync, it is possible to extend the length of the random sequence, by varying the random sequence in accordance with the frame number.What is the difference between additive descrambler and sync-word?
A sync-word is a pattern that is placed in the data stream through equal intervals (that is, in each frame ). A receiver searches for a few sync-words in adjacent frames and hence determines the place when its LFSR must be reloaded with a pre-defined initial state . The additive descrambler is just the same device as the additive scrambler.
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