Signal processing method, apparatus, and system

A signal processing method, comprising:

• receiving signals by using n paths of load modulation modules connected in parallel;
• turning on one or more paths of load modulation modules in the n paths of load modulation modules based on power values of the signals;
• and
• if the power values are less than or equal to a first threshold, turning on one path of main power amplification module in the n paths of load modulation modules;
• or
• if the power values are greater than the first threshold, turning on the one path of main power amplification module and at least one path of auxiliary power amplification module in (n-1) paths of load modulation modules, wherein
• the main power amplification module comprises two outphasing (outphasing) power amplification units, and the auxiliary power amplification module comprises two outphasing power amplifier arrays or one digital polar (digital polar) power amplifier array.

A signal processing apparatus, comprising:

• a control module, configured to control n paths of load modulation modules connected in parallel to receive signals, wherein
• the control module is further configured to:
• turn on one or more paths of load modulation modules in then paths of load modulation modules based on power values of the signals;
• and
• if the power values are less than or equal to a first threshold, turn on one path of main power amplification module in then paths of load modulation modules;
• or
• if the power values are greater than the first threshold, turn on the one path of main power amplification module and at least one path of auxiliary power amplification module in (n-1) paths of load modulation modules, wherein
• the main power amplification module comprises two outphasing (outphasing) power amplification units, and the auxiliary power amplification module comprises two outphasing power amplifier arrays or one digital polar (digital polar) power amplifier array.