Journal ArticleDOI
Feedforward ML-based timing estimation with PSK signals
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TLDR
A new nondata-aided clock recovery scheme for phase-shift keying (PSK) modulated signals is proposed that is based on maximum-likelihood methods and leads to a feedforward structure that can be easily implemented in digital form.Abstract:
We propose a new nondata-aided clock recovery scheme for phase-shift keying (PSK) modulated signals. Its derivation is based on maximum-likelihood (ML) methods and leads to a feedforward structure that can be easily implemented in digital form. The algorithm exhibits improvements with respect to other existing circuits, especially with small excess bandwidth factors. Its performance is assessed by simulation for quaternary PSK (QPSK) and 8PSK formats.read more
Citations
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Journal ArticleDOI
A new non-data-aided feedforward symbol timing estimator using two samples per symbol
TL;DR: Numerical results show the proposed non-data-aided feedforward symbol timing estimator is approximately unbiased, and has an attractive advantage over the formers from an implementation point of view.
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An alternative blind feedforward symbol timing estimator using two samples per symbol
TL;DR: This work analyzes Lee's estimator rigorously by exploiting efficiently the cyclostationary statistics present in the received oversampled signal; its asymptotic bias and mean-square error are derived in closed-form expression.
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A Deep Learning Framework for Signal Detection and Modulation Classification.
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Patent
Joint maximum likelihood frame and timing estimation for a digital receiver
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Journal ArticleDOI
Symbol-timing estimation in space-time coding systems based on orthogonal training sequences
TL;DR: A new symbol-timing estimator for space-time coding systems is proposed, which improves the conventional algorithm of Naguib et al. such that accurate timing estimates can be obtained even if the oversampling ratio is small.
References
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Journal ArticleDOI
A BPSK/QPSK Timing-Error Detector for Sampled Receivers
TL;DR: A simple algorithm for detection of timing error of a synchronous, band-limited, BPSK or QPSK data stream is proposed and derivation of the s curve reveals a sinusoidal shape.
Journal ArticleDOI
Timing Recovery in Digital Synchronous Data Receivers
K. Mueller,M. Muller +1 more
TL;DR: A new class of fast-converging timing recovery methods for synchronous digital data receivers is investigated, and a general method is outlined to obtain near-minimum-variance estimates of the timing offset with respect to a given steady-state sampling criterion.
Journal ArticleDOI
Digital filter and square timing recovery
M. Oerder,Heinrich Meyr +1 more
TL;DR: A digital algorithm is proposed that can be implemented very efficiently even at high data rates and allows free-running sampling oscillators and a novel planar filtering method that prevents synchronization hangups.
Journal ArticleDOI
The modified Cramer-Rao bound and its application to synchronization problems
TL;DR: The modified Cramer-Rao bound (CRB) is introduced which, like the true CRB, is a lower bound to the error variance of any parameter estimator.
Journal ArticleDOI
Optimization of symbol timing recovery for QAM data demodulators
A.N. D'Andrea,Marco Luise +1 more
TL;DR: An effective technique for the optimization of the clock recovery circuit in an all-digital modem for linearly modulated signals and the demonstration of a substantial performance improvement in terms of steady-state clock jitter, even with remarkably simple FIR prefilters with a small number of taps.