Decision feedforward equalization

A method of generating data from an input signal received from a channel, the method comprising the steps of:

• generating samples from the input signal with a sampling module;
• applying, by a feed-forward equalizer stage configured to, feed-forward equalization to the samples and thereby generating feed-forward decisions corresponding to the samples, wherein the applying the feed-forward equalization to the samples comprises:
• applying, by a feed-forward equalizer, feed-forward equalization to the samples;
• and
• generating, by a feed-forward equalizer stage decision device, feed-forward decisions corresponding to the samples based on a comparison of each feed-forward equalized sample with at least one corresponding threshold;
• adjusting, by a decision feed-forward stage, a delay of the feed-forward equalized samples in accordance with the feed-forward decisions corresponding to the samples, thereby generating latency-matched feed-forward equalized samples,
• generating a combination of the feed-forward equalized decisions and at east one filter tap value based on a transfer function of the channel;
• subtracting the combination from the latency-matched feed-forward equalized samples, thereby providing a compensated signal, and
• generating decision feed-forward equalized (DFFE) decisions from the compensated signal.

A non-transitory machine-readable storage meditate, having encoded thereon program code, wherein, when the program code is executed by a machine, the machine implements a method for generating data from an input signal received from a channel comprising the steps of:

• generating samples from the input signal;
• applying, by a feed-forward equalizer stage configured to, feed-forward equalization to the samples and thereby generating feed-forward decisions corresponding to the samples, wherein the applying the feed-forward equalization to the samples comprises:
• applying, by a feed-forward equalizer, feed-forward equalization to the samples;
• and
• generating, by a feed-forward equalizer stage decision device, feed-forward decisions corresponding to the samples based on a comparison of each feed-forward equalized sample with at least one corresponding threshold;
• adjusting, by a decision feed-forward stage, a delay of the feed-forward equalized samples in accordance with the feed-forward decisions corresponding to the samples, thereby generating latency-matched feed-forward equalized samples,
• generating a combination of the feed-forward equalized decisions and at least one filter tap value based on a transfer function of the channel;
• subtracting the combination from the latency-matched feed-forward equalized samples, thereby providing a compensated signal, and
• generating decision feed-forward equalized (DFFE) decisions from the compensated signal.