Communication method, apparatus, and system

A communication apparatus, comprising:

• a receiver configured to receive a first electromagnetic wave signal sent by a first adjacent node, the communication apparatus being interposed between the first adjacent node and a second adjacent node, each of the communication apparatus and first and second adjacent nodes being connected by a cable;
• a target processor configured to perform target processing on the first electromagnetic wave signal to obtain a second electromagnetic wave signal, wherein the target processing comprises processing that causes conjugate reversal of a spectrum of the first electromagnetic wave signal;
• and
• a transmitter configured to send the second electromagnetic wave signal to the second adjacent node, wherein:
• the second electromagnetic wave signal is different from a conjugate reversed signal;
• an amplitude-frequency curve of the conjugate reversed signal is axisymmetric to an amplitude-frequency curve of the first electromagnetic wave signal with respect to a target straight line;
• and
• a phase-frequency curve of the conjugate reversed signal is centrosymmetric to a phase-frequency curve of the first electromagnetic wave signal with respect to a target point, wherein:
• the target straight line is perpendicular to a horizontal coordinate axis of a coordinate system in which the amplitude-frequency curve is located;
• a frequency corresponding to an intersection point with the horizontal coordinate axis is a center frequency of the first electromagnetic wave signal;
• and
• the target point is a point corresponding to a center frequency on the horizontal coordinate axis of the coordinate system in which the phase-frequency curve is located.

A chip, comprising:

• at least one of a programmable logic circuit or program instructions that, when running, configure the chip to implement a communication method, the communication method comprising:
• receiving, by a target node, a first electromagnetic wave signal sent by a first adjacent node, the target node being interposed between the first adjacent node and a second adjacent node, each of the first adjacent node, second adjacent node and target node being connected over a cable;
• performing, by the target node, target processing on the first electromagnetic wave signal to obtain a second electromagnetic wave signal, the target processing causing conjugate reversal of a spectrum of the first electromagnetic wave signal;
• sending, by the target node, the second electromagnetic wave signal to the second adjacent node, wherein:
• the second electromagnetic wave signal is different from a conjugate reversed signal;
• an amplitude-frequency curve of the conjugate reversed signal is axisymmetric to the amplitude-frequency curve of the first electromagnetic wave signal with respect to a target straight line;
• and
• a phase-frequency curve of the conjugate reversed signal is centrosymmetric to the phase-frequency curve of the first electromagnetic wave signal with respect to a target point, wherein:
• the target straight line is perpendicular to a horizontal coordinate axis of a coordinate system in which the amplitude-frequency curve is located;
• a frequency corresponding to an intersection point with the horizontal coordinate axis is a center frequency of the first electromagnetic wave signal;
• and
• the target point is a point corresponding to a center frequency on the horizontal coordinate axis of the coordinate system in which the phase-frequency curve is located.

A communication system, comprising:

• a target node;
• a first adjacent node;
• and
• a second adjacent node, wherein:
• the target node is interposed between the first adjacent node and the second adjacent node, each of the first adjacent node, second adjacent node and target node being connected over a cable;
• the target node including a chip comprising at least one of a programmable logic circuit or program instructions that, when running, configure the chip to implement a communication method, the communication method comprising:
• receiving, by the target node, a first electromagnetic wave signal sent by the first adjacent node;
• performing, by the target node, target processing on the first electromagnetic wave signal to obtain a second electromagnetic wave signal, the target processing causing conjugate reversal of a spectrum of the first electromagnetic wave signal;
• sending, by the target node, the second electromagnetic wave signal to the second adjacent node, wherein:
• the first adjacent node is configured to send an electromagnetic wave signal to the third adjacent node;
• and
• the second adjacent node is configured to receive an electromagnetic wave signal sent by the target node and obtain, based on the received electromagnetic wave signal, data carried in the first electromagnetic wave signal sent by the first adjacent node;
• the second electromagnetic wave signal is different from a conjugate reversed signal;
• an amplitude-frequency curve of the conjugate reversed signal is axisymmetric to an amplitude-frequency curve of the first electromagnetic wave signal with respect to a target straight line;
• and
• a phase-frequency curve of the conjugate reversed signal is centrosymmetric to the phase-frequency curve of the first electromagnetic wave signal with respect to a target point, wherein:
• the target straight line is perpendicular to a horizontal coordinate axis of a coordinate system in which the amplitude-frequency curve is located;
• a frequency corresponding to the intersection point with the horizontal coordinate axis is a center frequency of the first electromagnetic wave signal;
• and
• the target point is a point corresponding to a center frequency on the horizontal coordinate axis of the coordinate system in which the phase-frequency curve is located.