Aharmonic interleaving of forward error corrected (FEC) signals

Details Aharmonic interleaving of forward error corrected (FEC) signals Aharmonic interleaving of forward error corrected (FEC) signals

2005-10-25

2005-10-25

Ngo, Ricky (Department: 2663)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S529000

Reexamination Certificate

active

06959019

ABSTRACT:
Multiple sub-streams are aharmonicaly interleaved into a high speed data signal by interleaving successive blocks of data from each sub-stream into the high-speed data signal using a predetermined interleaving pattern that is different for two consecutive sequences of N (an integer >2) blocks of data within the high-speed data signal. The resulting irregular distribution of bits of each sub-stream within the high speed data signal reduces the probability that error bursts due to low frequency noise will be localized in one or more of the recovered sub-stream extracted from the high speed data signal. This improved distribution of bit errors across the sub-streams reduces bit error rates in the most highly errored sub-streams, and thereby enables an increase in signal reach.

REFERENCES:
patent: 5056087 (1991-10-01), Ferguson
patent: 5757802 (1998-05-01), Yoo
patent: 5892771 (1999-04-01), Beaupre et al.
patent: 6229824 (2001-05-01), Marko
patent: 6356550 (2002-03-01), Williams

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