Dm-cm diversity receiver for a wireline communication system

A method of training a receiver comprising a DM sensor for receiving a signal and producing a first signal corresponding to the signal, and a CM sensor for receiving the signal and producing a second signal corresponding to the signal, wherein the first and second signals are combined to yield a better estimate of a transmit symbol in the signal, the method comprising:

• computing a first SNR of a diversity receiver method
• computing a second SNR of a noise canceller method
• computing a third SNR of the joint dual FEQ method
• based on which of the first, second and third SNR's is highest, determining a first range of tones in which combining the first and second signals is performed in a diversity receiver configuration, determining another range of tones in which combining the first and second signals is performed in a noise canceller configuration, and finally determining another range of tones in which combining the first and second signals is performed in a joint training configuration.

A wireline communication system, comprising:

• a differential mode (DM) sensor coupled to receive a signal of the wireline communication system and to produce a first signal representing the signal;
• a common mode (CM) sensor coupled to simultaneously receive the signal of the wireline communication system and to produce a second signal representing the signal;
• and
• a combiner that combines the first and second signals to yield a better estimate of a transmit symbol in the signal;
• and
• a far end transmitter connected to the DM and CM sensors through a loop, that outputs a controlled level of leaked CM signal originating from the signal, in order to improve the better estimate of the transmit symbol.