Suboptimum bit synchronization in high-speed communications

Atilio M. S. Gameiro; J. Nuno Matos

doi:10.1117/12.175256

2 May 1994 Suboptimum bit synchronization in high-speed communications

Atilio M. S. Gameiro, J. Nuno Matos

Proceedings Volume 2149, Technologies for Optical Fiber Communications; (1994) https://doi.org/10.1117/12.175256
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

In this communication we consider the use of a phase-locked loop with signal injection (PLLI) in clock synchronization circuits. We show that by exploring the correlation between the I (in- phase) and Q (quadrature) components of the disturbance, the PLLI allows significant improvements in the output jitter. Numerical results are given for optical communications with RZ signaling which show considerable improvements relatively to a conventional PLL. Experimental measurements obtained with a Colpitts VCO designed to allow current injection are presented that demonstrate the effectiveness of the PLLI in exploring the I-Q correlation.

Citation Download Citation

Atilio M. S. Gameiro and J. Nuno Matos "Suboptimum bit synchronization in high-speed communications", Proc. SPIE 2149, Technologies for Optical Fiber Communications, (2 May 1994); https://doi.org/10.1117/12.175256

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