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Systems of Synchronism in Optical Digital Communications António D. Reis 1,2 , José F. Rocha 2 , Atílio S. Gameiro 2 , and José P. Carvalho 1 1 Dep. Física / U. D. Remota, Universidade da Beira Interior Covilhã, 6200 Covilhã, Portugal 2 Dep. Electrónica e Telec. / Instituto Telec., Universidade de Aveiro, 3810 Aveiro, Portugal adreis@ubi.pt, frocha@ua.pt, amg@ua.pt, pacheco@ubi.pt Abstract. To transmit fidelity the information, at long distances, was from the beginning, a great human dream. The information signal, when transmitted from the emitter to the receiver, suffers attenuation and distortion. Then, it is necessary to use frequently a regenerator to restore the original amplitude and also to retime the bit original period. The amplitude can be restored with an amplifier with AGC (Automatic Gain Control) and the bit duration can be retimed with a synchronizer with AFC (Automatic Frequency Control). Keywords: Synchronism, Digital Telecommunications. 101
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Book of abstracts of the CENTERIS 2
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978-989-97433-0-4 General Chairs: M
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978-989-97433-0-4 Mário Caldeira,
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978-989-97433-0-4 Acknowledgements
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978-989-97433-0-4 Abstracts of the
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978-989-97433-0-4 Evaluating an Ent
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978-989-97433-0-4 Molecular Visuali
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978-989-97433-0-4 Extended abstract
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978-989-97433-0-4 Two-sided platfor
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A Review of Text-analytics Tools: S
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4. Liao, B.-Y., Wang, P.-W., Su, Y.
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Abstracts of the full papers presen
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