Howtosignalprocessing
- What is scrambler and descrambler?
- Why is scrambling used?
- What is scrambling in 5g?
- Why scrambler is used in digital data transmission?
What is scrambler and descrambler?
In telecommunications and recording, a scrambler (also referred to as a randomizer) is a device that manipulates a data stream before transmitting. The manipulations are reversed by a descrambler at the receiving side. Scrambling is widely used in satellite, radio relay communications and PSTN modems.
Why is scrambling used?
Scrambling is a binary bit-level processing applied to the transmission rate signal in order to make the resulting binary sequence appear more random.
What is scrambling in 5g?
The function of the scrambling is to remove long string of ones (1s) and zeros (0s) from the digital binary data. Scrambler is used in physical layer transmitter where as descrambler is used at receiver. The scrambling does not increase or decrease the bit rate i.e. the input and output bits are same in size.
Why scrambler is used in digital data transmission?
The scrambler provides an exclusive OR operation to a pseudo random number sequence and the data signals prior to their modulation and transmission. At the receiving end, the identical pseudo random sequence is exclusive OR'ed with the demodulated data, causing the data to be restored to its original form.
