Cynchronization-on-Data Performance Sample Clauses

Cynchronization-on-Data Performance. Rapid synchronization to the received waveform by the demodulator is necessary for several reasons. It permits rapid acquisition and evaluation of the on air signal when initially tuning to a desired channel. Secondly, long fades may result in a temporary loss of the signal and rapid resynchronization will minimize the amount of lost traffic. The time to acquire synchronization may be determined by the following procedure: a. Interrupt a noise free signal for a period of time that is sufficient for the demodulator to discard any signal timing information and to enter the resync mode. b. Restore the signal and measure the delay until delivery of correct data at the output of the demodulator. c. Repeat the test several times in order to determine a consistent average. d. Repeat the procedure with various noise levels. A noise level sufficient to give a BER of 0.01 provides a reasonable test under stressed conditions [6].