Anti-hangup binary quantized DPLL technique for timing recovery in QAM symbol-rate sampled receivers

Panayiotopoulos, I; Doumenis, DG; Constantinou, P

dc.contributor.author	Panayiotopoulos, I	en
dc.contributor.author	Doumenis, DG	en
dc.contributor.author	Constantinou, P	en
dc.date.accessioned	2014-03-01T01:16:09Z
dc.date.available	2014-03-01T01:16:09Z
dc.date.issued	2001	en
dc.identifier.issn	0090-6778	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13950
dc.subject	Markov processes	en
dc.subject	Phase-locked loops	en
dc.subject	Quadrature amplitude modulation	en
dc.subject	Synchronization	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Adaptive sequential loop filter	en
dc.subject.other	Binary quantization	en
dc.subject.other	Digital phase locked loop	en
dc.subject.other	Hang-up effect	en
dc.subject.other	Timing recovery	en
dc.subject.other	Adaptive filtering	en
dc.subject.other	Approximation theory	en
dc.subject.other	Computer simulation	en
dc.subject.other	Digital filters	en
dc.subject.other	Markov processes	en
dc.subject.other	Numerical methods	en
dc.subject.other	Quadrature amplitude modulation	en
dc.subject.other	Signal receivers	en
dc.subject.other	Statistical methods	en
dc.subject.other	Synchronization	en
dc.subject.other	Two dimensional	en
dc.subject.other	Phase locked loops	en
dc.title	Anti-hangup binary quantized DPLL technique for timing recovery in QAM symbol-rate sampled receivers	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/26.905900	en
heal.identifier.secondary	http://dx.doi.org/10.1109/26.905900	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	This paper presents the statistical performance analysis of a decision directed timing recovery scheme based on a digital phase-locked loop (DPLL) that uses binary quantization and employs an adaptive sequential loop filter (LF) devised in order to prevent the adversary hang-up phenomenon. The proposed loop is analyzed by exercising Markovian analytical techniques on a simplified two-dimensional Markov chain approximation. Both the tracking and acquisition performances are examined in cases of M-ary quadrature amplitude modulation input signals. Numerical results, validated further by computer simulations, in essence show that the employed anti-hangup sequential LF speeds up the acquisition process by preventing the synchronizer from excessively long hang-ups. Compared to the classical nonadaptive binary quantized DPLL synchronizer, the loop with the proposed adaptation mechanism gains up to an order of magnitude in response time over the hang-up effect, at a minor cost in its steady-state tracking performance.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Communications	en
dc.identifier.doi	10.1109/26.905900	en
dc.identifier.isi	ISI:000167225900019	en
dc.identifier.volume	49	en
dc.identifier.issue	2	en
dc.identifier.spage	360	en
dc.identifier.epage	374	en