METHOD OF ANALOG FRONT END OPTIMIZATION IN PRESENCE OF CIRCUIT NONLINEARITY

摘要

A method for manufacturing a serial link including a channel and a receiver, the link including linear time-invariant elements, the receiver including a continuous-time linear equalizer (CTLE) including a nonlinear block, and a slicer having an input. The method includes: for each of a plurality of candidate CTLE configurations: calculating a first probability density function (PDF), corresponding to a first signal value, at the input of the nonlinear block, calculating a first PDF, corresponding to the first signal value, at the output of the nonlinear block; calculating a second PDF, corresponding to a second signal value, at the input of the nonlinear block, calculating a second PDF, corresponding to the second signal value, at the output of the nonlinear block; and calculating a bit error rate.

主权项

1. A method for manufacturing a serial link comprising a channel and a receiver, the link comprising a plurality of linear time-invariant blocks, the receiver comprising a continuous-time linear equalizer (CTLE) comprising a nonlinear block having an input and an output, and a slicer having an input, the method comprising:
for each of a plurality of candidate CTLE configurations of the CTLE:
calculating a first probability density function (PDF), corresponding to a first signal value, at the input of the nonlinear block,calculating a first PDF, corresponding to the first signal value, at the output of the nonlinear block from the first PDF at the input of the nonlinear block;calculating a second PDF, corresponding to a second signal value, at the input of the nonlinear block,calculating a second PDF, corresponding to the second signal value, at the output of the nonlinear block from the second PDF at the input of the nonlinear block;calculating a bit error rate, from:
the first PDF at the output of the nonlinear block; andthe second PDF at the output of the nonlinear block; selecting a configuration, from among the candidate CTLE configurations, satisfying a criterion; and fabricating the CTLE with the selected configuration.