 The generation of non-MPEG data carried as part of the transport layer (such as the position of transmitted frame sync, or the initial state of trellis encoding devices) would also have to be matched exactly between every synchronized transmitter.Even though this data is discarded after the received signal is demodulated, any mismatch could create interference between the various co-channel signals.An extra “operations and maintenance” distributed transmission packet (OMP, packet identifier PID