ATM cell detector

Details ATM cell detector ATM cell detector

1994-06-23

1996-01-16

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

371 371, 370 60, 370 941, H04J 324

Patent

active

054854610

ABSTRACT:
Method for detecting data packets, such as ATM data cells. The preamble comprises a bit alignment word (AW) and a unique word (UW). Successively, the Hamming distances, hd's, are calculated from the first detected l-bit, over a length of AW plus UW, then from the next bit over a length of UW, and finally from the second 1-bit, again over a length of AW plus UW. The position of the first bit of the detected data packet is then calculated on the basis of the hd values thus calculated.

REFERENCES:
patent: 4569050 (1986-02-01), Ohme
patent: 5014276 (1991-05-01), Bush et al.
patent: 5224091 (1993-06-01), Brandt
patent: 5289476 (1994-02-01), Johnson et al.
Electronics Letters; "New Retiming and Synchronization Scheme for Optical ATM Switching Systems"; Jan. 18, 1990; vol. 26, No. 2; pp. 99-100.
Richard C. Walker et al.; "A Chipset for Gigabit Rate Data Communication"; Sep. 18, 1989; Proceedings of the 1989 Bipolar Circuits and Technology Meeting; (IEEE); pp. 288-290.

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