Title :
Timing Recovery in the Presence of a Residual Echo Signal
Author :
Moeneclaey, Marc
Author_Institution :
Univ. of Ghent, Gent, Belgium
fDate :
8/1/1987 12:00:00 AM
Abstract :
This paper deals with the problem of symbol timing recovery at the subscriber end of a full duplex two wire digital subscriber loop employing echo cancellation. Both nondecision-aided and decisionaided synchronization are considered. It is demonstrated that the presence of a residual echo signal can substantially degrade the synchronizer performance. This degradation is shown to be larger for nondecisionaided synchronizers than for decision-aided synchronizers. The smaller the synchronizer bandwidth and the signal-to-echo ratio, the more the decision-aided synchronizer outperforms the nondecision-aided synchronizer.
Keywords :
Echo interference; Subscriber networks; Synchronization; Additive noise; Bandwidth; Central office; DSL; Degradation; Delay; Echo cancellers; Signal processing; Timing; Wire;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1987.1096865