Systems for High-Speed Backplane Applications Using Pre-Coding

A receiver configured to manipulate a modulated data stream received over a channel to properly recover an output data stream, the receiver comprising:

• a discrete time sampler configured to sample the modulated data stream to provide a sampled modulated data stream;
• a decision feedback equalizer (DFE) with an inverse pre-coder configured to detect symbols within the sampled modulated data stream and perform a modulo M operation on the detected symbols to provide an inverse pre-coded symbol stream;
• a line code decoder configured to demodulate the inverse pre-coded symbol stream to provide a demodulated data stream, wherein the inverse pre-coded symbol stream has been modulated in accordance with a pulse amplitude modulation (PAM) scheme having an order greater than two;
• a forward error correction (FEC) decoder configured to detect and correct for errors in the demodulated data stream to provide an error corrected data stream;
• and
• a de-scrambler configured to perform an inverse scrambling function on the error corrected data stream to provide the output data stream.

A receiver configured to manipulate a modulated data stream received over a channel to properly recover an output data stream, the receiver comprising:

• a discrete time sampler configured to sample the modulated data to provide a sampled modulated data stream;
• an inverse pre-coder with an extended slicer configured to detect symbols within the sampled modulated data stream and perform a modulo M operation on the detected symbols to provide an inverse pre-coded symbol stream;
• a line code decoder configured to demodulate the inverse pre-coded symbol stream to provide a demodulated data stream, wherein the inverse pre-coded symbol stream has been modulated in accordance with a pulse amplitude modulation (PAM) scheme having an order greater than two;
• a forward error correction (FEC) decoder configured to detect and correct for errors in the demodulated data stream to provide an error corrected data stream;
• and
• a de-scrambler configured to perform an inverse scrambling function on the error corrected data stream to provide the output data stream.