Feedback overhead reduction during crosstalk precoder initialization in DSL systems

摘要

An apparatus comprising a transceiver coupled to a digital subscriber line (DSL) between an exchange site and a customer premise equipment (CPE) and configured to send a feedback error message to train a crosstalk precoder coupled to the exchange site, wherein the feedback error message comprises a first field for carrying a plurality of error components of said error message and a second field for carrying an indication of a quantity of bits per error component of said error components, a quantization accuracy per error competent of said error components, or both. Corresponding methods for transmitting, respectively receiving said error message using the defined fields are also provided.