Pulse or digital communications – Receivers – Angle modulation
Patent
1997-11-26
2000-08-29
Bocure, Tesfaldet
Pulse or digital communications
Receivers
Angle modulation
375349, 375350, 375355, H04L 2714, H04L 2716, H04L 2722
Patent
active
061119202
ABSTRACT:
Decision-based timing information extraction from a baud-rate sampled digital transmission system. Samples are interpolated from a data sample stream to obtain samples shifted forward and backward in time. A timing metric is applied to the forward and backward shifted sample stream to create forward and backward timing metric values. A timing recovery metric is applied to the forward and backward timing metric values, and is used as a phase feedback term to recover timing information. The method and system yield a very fast, data-driven convergence for baud-rate timing, and does not rely on any specific data sequence. The method and system are used in digital communication devices such as digital modems.
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patent: 5249578 (1993-10-01), Karp et al.
patent: 5263054 (1993-11-01), Davis et al.
patent: 5742622 (1998-04-01), Claydon et al.
Bergmans, Jan W.M., Digital Baseband Transmission and Recording, Dordrecht: Kluwer Academic Publishers, 1996, pp.533-535.
Alelyunas Carl H.
Norrell Andrew L.
3Com Corporation
Bocure Tesfaldet
Corrielus Jean B
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