ERROR CORRECTING TIMING REFERENCE DISTRIBUTION

摘要

A distribution reference signal is described for use in synchronizing data transmission. The distribution reference signal includes a digital symbol pulse train having a rate much higher than the actual reference frequency represented. A fixed group of symbols is used to identify a low frequency signal event or reference pulse. A second group of sequence symbols indicates continuous phase information. The symbols used to identify the reference pulse are significantly different from the other phase information facilitating identification of the reference pulse. By encoding a known sequence of symbols to represent the phase information in the reference signal, an increased amount of frequency information can be propagated as compared with a single pulse aiding the detection and correction of signalling errors as the errors will break the expected symbol sequence. A system can then identify and correct or choose to ignore the errors based on the effect the errors will have on the system performance.