Preamble is used for
A. Detect start of transmission
B. To set automatic gain control
C. To align internal clocks
D. All of the mentioned
Answer:A
Preamble is used for
A. Detect start of transmission B. To set automatic gain control C. To align internal clocks D. All of the mentioned
Explanation: The receiver uses preamble for detecting the start of transmission, to set automatic gain control, and to align internal clocks and local oscillator with the received signal.