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For PAM three based PHY, high efficiency coding eleven B seven T has advantage to reach around ninety nine dot one percent bandwidth utilization than three B two T used in I triple E eighty two dot three bp.
All of three eleven B seven T coding schemes, defined in USB four V two, Gray coding and Right trapezoid based in this article, partitioning eleven B seven T to four group to reuse three B two T and allocating redundant constellation point as special identifier will lower circuit implementation complexity of eleven B seven T encoding and decoding.
These eleven B seven T coding based PAM three link works together with RS FEC to deal with both AWGN and DFE introduced burst error. From theoretical analysis and simulation, right trapezoid based eleven B seven T scheme has better post FEC BER than the other two schemes.
The right trapezoid based eleven B seven T scheme methodology and analysis can further evolve to non integer power of two PAM or QAM. |
IEEE/ICACT20260094 Slide.19
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