PNB(m,3) Burst Structure
PUI (Public Information)
- Heavily protected (1/4 rate, Golay(24,12) with repetition), since intended to all the terminals attached to the physical channel.
- MCS (modulation coding scheme)
- USF (uplink status flag) - gives uplink transmission grant to one of the terminals attached to the physical channel, dynamically (burst-by-burst). In uplink, SQR (signal quality report) replaces this bit field.
- PKAB (packet keep alive burst, a burst without payload for satellite power saving) indicator
Burst duration = 5 msec (3 time slots)
Symbol rate = m*23.4 ksps