Signal reception using non-linearity-compensated, partial response feedback
A receiver may receive a signal that was generated by passage of symbols through a non-linear circuit. An equalizer of the receiver may equalize the received signal based on a first non-linearity compensated, inter-symbol correlated (ISC) feedback signal to generate an equalized signal. The receiver may correct a phase error of the equalized signal to generate a phase-corrected equalized signal. The phase correction may be based on a second, non-linearity compensated, inter-symbol correlated (ISC) feedback signal.
1. A method comprising:
in an electronic receiver:
receiving a partial-response-domain signal;
converting said received partial-response-domain signal to a symbol-domain signal, said converting comprising equalizing said received partial-response-domain signal to generate an equalized partial-response-domain signal;
converting said symbol-domain signal to a first partial-response-domain feedback signal;
configuring said electronic receiver based on said first partial-response-domain feedback signal;
generating an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal, said generating comprising, calculating a Euclidean distance between said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
2. The method of claim 1 , comprising, as part of said converting said symbol-domain signal to said first partial-response-domain feedback signal, convolving said symbol-domain signal with a plurality of tap coefficients.
3. A method comprising:
in an electronic receiver:
receiving a partial-response-domain signal;
converting said received partial-response-domain signal to a symbol-domain signal, said converting comprising equalizing said received partial-response-domain signal to generate an equalized partial-response-domain signal;
converting said symbol-domain signal to a first partial-response-domain feedback signal;
configuring said electronic receiver based on said first partial-response-domain feedback signal;
converting said symbol-domain signal to a second partial-response-domain feedback signal; and
phase adjusting said equalized partial-response-domain signal based on said second partial-response-domain feedback signal.
4. The method of claim 3 , comprising generating an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
5. The method of claim 3 , comprising, as part of said converting said symbol-domain signal to said first partial-response-domain feedback signal, convolving said symbol-domain signal with a plurality of tap coefficients.
6. A method comprising:
in an electronic receiver:
receiving a partial-response-domain signal;
converting said received partial-response-domain signal to a symbol-domain signal, wherein said converting comprises convolving said symbol-domain signal with a plurality of tap coefficients;
converting said symbol-domain signal to a first partial-response-domain feedback signal;
configuring said electronic receiver based on said first partial-response-domain feedback signal; and
determining said plurality of tap coefficients based on tap coefficients of a filter of a transmitter from which said received partial-response-domain signal was received.
7. The method of claim 6 , comprising, as part of said converting said received partial-response-domain signal to said symbol-domain signal, equalizing said received partial-response-domain signal to generate an equalized partial-response-domain signal.
8. The method of claim 6 , comprising, as part of said converting said received partial-response-domain signal to said symbol-domain signal, equalizing said received partial-response-domain signal to generate an equalized partial-response-domain signal.
9. The method of claim 8 , comprising generating an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
10. A method comprising:
in an electronic receiver:
receiving a partial-response-domain signal;
converting said received partial-response-domain signal to a symbol-domain signal;
converting said symbol-domain signal to a first partial-response-domain feedback signal, said converting said symbol-domain signal to said first partial-response-domain feedback signal comprising processing said symbol-domain signal via a nonlinearity modeling circuit; and
configuring said electronic receiver based on said first partial-response-domain feedback signal.
11. The method of claim 10 , wherein said nonlinearity modeling circuit models a nonlinearity of a transmitter from which said received partial-response-domain signal was received.
12. The method of claim 10 , wherein said nonlinearity modeling circuit models a nonlinearity of a front-end of said electronic receiver.
13. The method of claim 10 , comprising, as part of said converting said received partial-response-domain signal to said symbol-domain signal, equalizing said received partial-response-domain signal to generate an equalized partial-response-domain signal.
14. The method of claim 13 , comprising generating an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
15. The method of claim 10 comprising, as part of said converting said symbol-domain signal to said first partial-response-domain feedback signal, convolving said symbol-domain signal with a plurality of tap coefficients.
16. A system comprising:
circuitry for use in an electronic receiver, wherein the circuitry comprises an equalizer and is operable to:
receive a partial-response-domain signal;
convert said received partial-response-domain signal to a symbol-domain signal, wherein said conversion comprises equalization, via said equalizer, of said received partial-response-domain signal to generate an equalized partial-response-domain signal;
convert said symbol-domain signal to a first partial-response-domain feedback signal;
configure said electronic receiver based on said first partial-response-domain feedback signal; and
generate an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal, wherein said generation of said error signal comprises calculation of a Euclidean distance between said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
17. The system of claim 16 , wherein said conversion of said symbol-domain signal to said first partial-response-domain feedback signal comprises convolution of said symbol-domain signal with a plurality of tap coefficients.
18. A system comprising:
circuitry for use in an electronic receiver, wherein the circuitry comprises an equalizer and is operable to:
receive a partial-response-domain signal;
convert said received partial-response-domain signal to a symbol-domain signal, wherein said conversion comprises equalization, via said equalizer, of said received partial-response-domain signal to generate an equalized partial-response-domain signal;
convert said symbol-domain signal to a first partial-response-domain feedback signal;
configure said electronic receiver based on said first partial-response-domain feedback signal;
convert said symbol-domain signal to a second partial-response-domain feedback signal; and
phase adjust said equalized partial-response-domain signal based on said second partial-response-domain feedback signal.
19. The system of claim 18 , wherein said circuitry is operable to generate an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
20. The system of claim 18 , wherein said conversion of said symbol-domain signal to said first partial-response-domain feedback signal comprises convolution of said symbol-domain signal with a plurality of tap coefficients.
21. A system comprising:
circuitry for use in an electronic receiver, wherein the circuitry is operable to:
receive a partial-response-domain signal;
convert said received partial-response-domain signal to a symbol-domain signal;
convert said symbol-domain signal to a first partial-response-domain feedback signal, wherein said conversion of said symbol-domain signal to said first partial-response-domain feedback signal comprises convolution of said symbol-domain signal with a plurality of tap coefficients; and
configure said electronic receiver based on said first partial-response-domain feedback signal, wherein said circuitry is operable to determine said plurality of tap coefficients based on tap coefficients of a filter of a transmitter from which said received partial-response-domain signal was received.
22. The system of claim 21 , wherein:
said circuitry comprises an equalizer; and
said conversion of said received partial-response-domain signal to said symbol-domain signal comprises equalization, via said equalizer, of said received partial-response-domain signal to generate an equalized partial-response-domain signal.
23. The system of claim 21 , wherein:
said circuitry comprises an equalizer; and
said conversion of said received partial-response-domain signal to said symbol-domain signal comprises equalization, via said equalizer, of said received partial-response-domain signal to generate an equalized partial-response-domain signal.
24. The system of claim 23 , wherein said circuitry is operable to generate an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
25. A system comprising:
circuitry for use in an electronic receiver, wherein the circuitry comprises a nonlinearity modeling circuit and is operable to:
receive a partial-response-domain signal;
convert said received partial-response-domain signal to a symbol-domain signal;
convert said symbol-domain signal to a first partial-response-domain feedback signal, wherein said conversion of said symbol-domain signal to said first partial-response-domain feedback signal comprises processing of said symbol-domain signal via said nonlinearity modeling circuit; and
configure said electronic receiver based on said first partial-response-domain feedback signal.
26. The system of claim 25 , wherein said nonlinearity modeling circuit models a nonlinearity of a transmitter from which said received partial-response-domain signal was received.
27. The system of claim 25 , wherein said nonlinearity modeling circuit models a nonlinearity of a front-end of said electronic receiver.
28. The system of claim 25 , wherein:
said circuitry comprises an equalizer; and
said conversion of said received partial-response-domain signal to said symbol-domain signal comprises equalization, via said equalizer, of said received partial-response-domain signal to generate an equalized partial-response-domain signal.
29. The system of claim 28 , wherein said circuitry is operable to generate an error signal based on said first partial-response-domain feedback signal and said equalized partial-response-domain signal.
30. The system of claim 25 , wherein said conversion of said symbol-domain signal to said first partial-response-domain feedback signal comprises convolution of said symbol-domain signal with a plurality of tap coefficients.