Systems and methods for inter-track interference compensation

A method for cancelling inter-track interference, the method comprising:

• receiving a current track data set derived from a current track on a storage medium;
• accessing a previous track data set from a data buffer, wherein the previous track data set is maintained in the data buffer while the current track data set is being received, and wherein the previous track data set was derived from a previous track on the storage medium;
• calculating an estimated inter-track interference response from the previous track data set based at least in part on the previous track data set and the current track data set;
• calculating an inter-track interference from the previous track data set based at least in part on the previous track data set and the inter-track interference response from the previous track data set;
• and
• cancelling the inter-track interference from the previous track data set to yield a compensated output.

A data storage device, the data storage device comprising:

• a storage medium;
• a read/write head assembly disposed in relation to the storage medium;
• a read channel circuit operable to receive an information set from the storage medium via the read/write head assembly, the read channel circuit including:
• a front end circuit operable to convert the information set to a current track data set;
• a data buffer operable to store a previous track data set while a current track data set is being received;
• an inter-track interference response circuit operable to estimate an inter-track interference response from the previous track data set based at least in part on the previous track data set and the current track data set;
• and
• an inter-track interference signal estimator circuit operable to calculate an inter-track interference from the previous track data set based at least in part on the previous track data set and the inter-track interference response from the previous track data set.