Reflectometer with echo canceller
AssigneeIntel Corporation
InventorsChunming Han, Amod V. Dandawate, Xiao-Feng Qi
Life of this patent
Estimating the term…
Abstract
Various embodiments are described for an improved reflectometer and/or a modem or other device which may include an improved reflectometer. An apparatus may include a pulse transmitter to transmit a pulse to a line to be tested, a receiver adapted to receive a reflection of the transmitted pulse, and a zero-echo canceling system coupled to the transmitter and receiver. The zero-echo canceling system may be adapted to at least partially cancel a received zero-echo by generating a zero-echo canceling signal based on the transmitted pulse and to calculate an error signal as a difference between the zero-echo and the zero-echo canceling signal.
Claims17
A method of reducing a zero-echo comprising:
- transmitting a pulse to a line to be tested;
- generating a zero-echo canceling signal based on the transmitted pulse;
- receiving a zero-echo;
- adding or combining the zero-echo and the zero-echo canceling signal to reduce the received zero-echo;
- and
- calculating an error signal as a difference between the zero-echo and the zero-echo canceling signal.
An apparatus comprising:
- a pulse transmitter to transmit a pulse to a line to be tested;
- a receiver adapted to receive a reflection of the transmitted pulse;
- and
- a zero-echo canceling system coupled to the transmitter and receiver, the zero-echo canceling system adapted to at least partially cancel a received zero-echo by generating a zero-echo canceling signal based on the transmitted pulse and to calculate an error signal as a difference between the zero-echo and the zero-echo canceling signal.
A modem comprising:
- a transceiver;
- a processor coupled to the transceiver;
- a zero-echo canceling system coupled to the transceiver and the processor, the zero-echo canceling system adapted to at least partially cancel a zero-echo by generating a zero-echo canceling signal based on a transmitted pulse and to calculate an error signal as a difference between the zero-echo and the zero-echo canceling signal.
Dependencies are inferred from the claim text.