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Abstract

Examples pertaining to prevention of crosstalk during single-ended line testing are described. In a far-end crosstalk (FEXT) cancelled single-point-to-multi-point time-division duplexing (TDD) orthogonal frequency-division multiplexing (OFDM) communication system, a first communication device may signal a plurality of second communication devices that there is a quiet period where one port of multiple ports of the first communication device will transmit zero energy on a plurality of communications channels between the first communication device and the second communication devices. The first communication device may transmit a stimulus on a selected port during the quiet period. The first communication device may derive loop parameters from an echo response of the stimulus. The first communication device may be communicatively coupled to the plurality of second communication devices, with each of at least some of the multiple ports of the first communication device is connected to a respective one of the second devices through a crosstalk affected channel of the plurality of communication channels.

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First Claim