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8b/10b Encoding and Decoding Project
Marc Piszkiewicz
Advisors: Dr. Brian Huggins and Dr. In Soo Ahn

In fiber optic systems, it is necessary for an optical signal to reduce spectral components near DC. It is also necessary to introduce enough transitions for a binary stream of long, successive 1's or 0's to extract a clock signal. One means of accomplishing both requirements is to use the 8b/10b encoding and decoding scheme patented by IBM in 1984 (US Pat. No. 4,486,739).

The object of the project is to implement all the functions described in the aforementioned patent using combination of programmable memory, sequential logic, and combinational logic. The project also includes a subsystem for testing the encoder and decoder sections using a digital scrambler (pseudo-noise generator) and descrambler.

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