Patent ID: 8787571
Filing Date: 2014-07-22
Classification: H04L

Abstract:
1. A method comprising: transmitting data from a first device in a first direction over a cable in a cable communication network; and transmitting data from a second device in a second direction opposite the first direction over the cable, wherein the data is transmitted in the first direction and in the second direction substantially simultaneously, using a division-free duplexing (DFD) technique comprising: receiving an analog primary signal from the cable; receiving an analog reference signal from a transmitter; converting the analog primary signal into a digital primary signal; converting the analog reference signal into a digital reference signal; and processing the digital reference signal with a digital adaptive filter, wherein the digital adaptive fliter uses the digital reference signal and digital primary signal as inputs for determining filter tap weights of the digital adaptive to provide an output; and subtracting the output of the digital adaptive filter from the digital primary signal to generate a digital cancelled signal.