公开(公告)号：US10547387B2

公开(公告)日：2020-01-28

申请号：US15942043

申请日：2018-03-30

Applicant: Mellanox Technologies Denmark ApS.

Inventor： Juan Jose Vegas-Olmos ,  Steen Christensen ,  Johan Jacob Mohr

IPC: H04B10/50 ,  H04B10/588 ,  H04B10/54 ,  G11B5/09

Abstract: Embodiments are disclosed for equalizing input signals for communication systems. An example method includes receiving an input signal. The input signal encodes a plurality of bits in a number of amplitude levels. The example method further includes converting the input signal to an equalized output signal using a plurality of lookup table circuits. The equalized output signal encodes a plurality of symbols in a number of amplitude levels. The example method further includes feeding the equalized output signal to an output driver circuit.

公开(公告)号：US10686528B2

公开(公告)日：2020-06-16

申请号：US16182964

申请日：2018-11-07

Applicant: Mellanox Technologies Denmark ApS.

Inventor： Thorkild Franck ,  Bjarke Vad Pedersen ,  Johan Jacob Mohr ,  Eyal David ,  Juan Jose Vegas Olmos

IPC: H04B10/54 ,  H01S5/42 ,  H04B10/58 ,  H04B10/524

Abstract: Embodiments are disclosed for generating a lookup table value for calibrating a lookup table circuit in an optical transmitter. The example method includes generating a calibration signal. The calibration signal encodes a plurality of bits in a number of amplitude levels. The example method further includes transmitting the calibration signal to a module under calibration and transmitting a symbol sequence of defined length to a reference module. The reference module compares the symbol sequence with a distorted signal received from the module under calibration to generate a set of condition count statistics. The example method further includes receiving the set of condition count statistics from the receiver in the reference module and calculating a lookup table value based on the set of condition count statistics. The example method further includes transmitting the lookup table value to a transmitter associated with the module under calibration.