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One PAM three symbol presents around 1.5849625 bits, the general coding efficiency of three B two T, uses two consecutive PAM three symbols T one and T zero to carry three bits binary B two to B zero with one redundant constellation point. The efficiency is around ninety four dot six percent.
USB four V two defines RS five zero four, four eight zero FEC and CRC thirty two working together for fourty Gbps per lane PAM three based link to improve post FEC BER with better than one E minus nineteen.
Both of random errors exist in additive white gaussian noise, AWGN, channel and burst error by DFE introduced error propagation are included in this End to End PAM three based physical link.
Our analysis is based on the link model in the following figure. |
IEEE/ICACT20260094 Slide.03
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