Signal equalization optimization techniques

A system comprising:

• a first transmit (Tx) circuit;
• a first receive (Rx) circuit;
• a redriver circuit, the redriver circuit comprising a second Rx circuit and a second Tx circuit, the second Rx circuit coupled to the first Tx circuit and the second Tx circuit coupled to the first Rx circuit;
• and
• an equalization circuit coupled to the first Tx circuit, the first Rx circuit, and the redriver circuit.

A method comprising:

• generating a sample search space comprising a plurality of samples, the sample search space based on a plurality of receiver (Rx) equalization parameters associated with an Rx circuit and a plurality of transmitter (Tx) equalization parameters associated with a Tx circuit;
• partitioning the sample search space into a set of successively smaller partitions;
• determining a set of signal quality characteristics associated with a communication link between the Rx circuit and the Tx circuit, the set of signal quality characteristics based on a set of samples of the plurality of samples corresponding to the set of successively smaller partitions;
• selecting a signal quality characteristic of the set of signal quality characteristics based on maximizing signal quality of the communication link during data transmission between the Tx circuit and the Rx circuit, the signal quality characteristic of the set based on a sample of the set of samples;
• and
• applying an Rx equalization parameter of the plurality of Rx equalization parameters to the Rx circuit and a Tx equalization parameter of the plurality of Tx equalization parameters to the Tx circuit, the Rx equalization parameter and the Tx equalization parameter corresponding to the sample.