Pilot Term In DVB Satellite TV Broadcasting
Pilot:
"Pilots" are all technical terms related to the physical layer (PHY) operation and signal acquisition in Digital Video Broadcasting (DVB) standards, particularly DVB-S2 and its extension DVB-S2X. Here is an explanation of each term within the DVB context:
Pilot:
Pilots are known, pre-defined symbols or sequences inserted periodically into the transmitted data stream at the physical layer. They are crucial for the receiver to perform essential synchronization and channel estimation functions:
Carrier Phase Recovery: Pilots help the receiver resolve phase ambiguities in the demodulator.
Frequency Estimation: They allow the receiver to estimate and correct frequency errors (coarse frequency estimation).
Channel Tracking: The receiver uses pilot signals to track fast changes in the channel conditions (e.g., phase noise) and ensure robust operation.
Hello, my name is Er Balvinder Singh .
0 comments:
Post a Comment