Method, apparatus and system for sending physical layer signal

A method, comprising:

• receiving a signal frame of a physical layer signal;
• capturing, if the received signal frame of the physical layer signal comprises one single-frequency sequence, the signal frame in a frequency domain according to the single-frequency sequence, wherein the single-frequency sequence comprises a plurality of preset symbols;
• wherein the signal frame comprises a preset training data block, and, after the capturing the signal frame in a frequency domain according to the single-frequency sequence, the method further comprises:
• suppressing, according to the training data block, nonlinear impact generated in a power amplification process.

An apparatus, comprising:

• a signal frame constructing module, configured to construct a signal frame of a physical layer signal, wherein the signal frame comprises one single-frequency sequence, the single-frequency sequence is used to enable a receiving apparatus to capture the signal frame in a frequency domain according to the single-frequency sequence, and the single-frequency sequence comprises a plurality of preset symbols;
• and
• a transmitter, configured to send the signal frame at a physical layer;
• wherein the signal frame comprises a preset training data block, and the training data block is used to enable the receiving apparatus to suppress, according to the training data block, nonlinear impact generated in a power amplification process.

An apparatus, comprising:

• a receiver, configured to receive a signal frame of a physical layer signal;
• and
• a frequency domain frame capturing module, configured to capture, if the signal frame of the physical layer signal that is received by the receiver comprises one single-frequency sequence, the signal frame in a frequency domain according to the single-frequency sequence, wherein the single-frequency sequence comprises a plurality of preset symbols;
• wherein the signal frame that comprises one single-frequency sequence further comprises a preset training data block, and the apparatus further comprises:
• a nonlinear suppressing module, configured to suppress, according to the training data block, nonlinear impact generated in a power amplification process.