What does the scrambling code do in the uplink?
It is “Scrambling Code”. By using the scrambling code, NodeB can separate signals coming simultaneously from many different UEs and UE can separate signals coming simultaneously from many different NodeB.
What is scrambling in wireless network?
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.
What is scrambling and why it is used?
Scrambling is a digital encoding technique that is used in modern data communication schemes and can principally provide aid in retrieving information from received data enhancing synchronization between the transmitter and the receiver.
How to perform downlink/uplink shared channel scrambling using Lindir?
This model is used to perform downlink/uplink shared channel scrambling, user can specify the link direction by parameter LinDir. Gold sequence generation, L=31. Where Nc=1600 and the first m-sequence shall be initialised with . The initialisation of the second m-sequence is denoted by cinit.
Which model is used to perform downlink/uplink shared channel scrambling?
This model is used to perform downlink/uplink shared channel scrambling, user can specify the link direction by parameter LinDir. Gold sequence generation, L=31. Where Nc=1600 and the first m-sequence shall be initialised with .
What is the difference between downlink and uplink codes?
In downlink, only long codes are used. In uplink direction long codes are used for node B using Rake reciever and short codes are used for NodeB using multiuser detection or interference cancellation recievers. With short codes the implementation of cyclic processing structure is simpler.
What is a uplink on my phone?
Uplink definition – signal leaving your cellular device and going back to a cell tower Most of us have experienced cell phone conversations when you can hear the other person but they can’t hear you or vice versa. A disruption in downlink or uplink in cellular communication causes this issue.