High speed communications system

An apparatus comprising:

• an encoder configured to:
• obtain a set of information input bits and a previously transmitted set of information bits;
• and
• generate a set of signals of a partial response-encoded orthogonal differential vector signaling (ODVS) codeword, the set of signals of the partial response-encoded ODVS codeword generated from a superposition of a plurality of mutually orthogonal sub-channel code vectors, each sub-channel code vector associated with (i) a respective information bit of the set of information bits and (ii) a corresponding information bit of the previously transmitted set of information bits;
• and
• a plurality of drivers configured to transmit each signal of the partial response-encoded ODVS codeword over a respective wire of a multi-wire bus.