Title :
A comprehensive analysis of stuff threshold modulation used in clock-rate adaptation schemes
Author :
Abeysekera, Saman S. ; Cantoni, Antonio ; Sreeram, Victor
Author_Institution :
Telecommun. Res. Inst., Curtin Univ. of Technol., Perth, WA, Australia
fDate :
8/1/1998 12:00:00 AM
Abstract :
Clock-rate adaptation circuits of network synchronizers work by controlling the output data rate by pulse stuffing. The technique of stuff threshold modulation (ST-Mod) is one method used to reduce the waiting time jitter produced by pulse stuffing. An expression for the filtered waiting time jitter in the presence of an ST-Mod sequence is present and the selection of a suitable ST-Mod dither sequence for a given set of data transmission conditions is investigated. It is shown that by using either a random ST-Mod sequence or a modified-wave ST-Mod sequence, it is possible to obtain minimal filtered jitter for given synchronizer-desynchronizer characteristics
Keywords :
clocks; data communication; filtering theory; jitter; modulation; sequences; synchronisation; telecommunication networks; ST-Mod dither sequence; clock-rate adaptation circuits; data transmission; digital transmission networks; filtered waiting time jitter; modified-wave ST-Mod sequence; network synchronizers; output data rate; pulse stuffing; random ST-Mod sequence; stuff threshold modulation; synchronizer-desynchronizer characteristics; Australia; Clocks; Frequency synchronization; Jitter; Payloads; Phase locked loops; Pulse modulation; SONET; Synchronous digital hierarchy; Timing;
Journal_Title :
Communications, IEEE Transactions on
