Method and device for data recovery in burst mode communication

Details Method and device for data recovery in burst mode communication Method and device for data recovery in burst mode communication

1993-11-29

1995-12-26

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

375354, 375355, H04L 2706

Patent

active

054794510

ABSTRACT:
A method for data recovery in burst mode communication systems that include a data signal having a burst preamble with a defined sequence of m bits, by sampling in a first sampling step (2) the burst preamble with n samples per bit carried out by n bit clocks with different phases, and providing a sampled burst preamble. The method is characterized in that it further comprises the steps of correlating in a correlation step (3) the sampled burst preamble with at least n representations of the defined sequence of m-bits of the burst preamble also sampled at n times per bit, each of said at least n representations being delayed one sample clock period with respect to a previous one of said at least n representations in order to obtain at least n time-shifted correlation results; determining in a decision step (4) an optimum phase clock and a first received data bit based on which of said at least n time-shifted correlation results has a greatest value; and regenerating in a regeneration step (5) a sampled data signal sampled at an optimum instant in accordance with the optimum phase clock.

REFERENCES:
patent: 4660164 (1987-04-01), Leibowitz
patent: 4829543 (1989-05-01), Borth et al.
patent: 5347548 (1994-09-01), Messerges et al.
"A Bit Synchronization Technique for PDS Optical Subscriber Loop Systems": by Masakazu Kitazawa et al., published in the Proceedings of the Workshop on Local Optical Networks by IEEE, Tokyo Japan, 1991. Pp 8.2-1 through 8.2-10.

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