The invention discloses a judgment-based cascaded selective mapping (Judgment-based Cascaded Selective Mapping, J-Ca-SLM) applied to a
radar communication integration
system (RCIS) based on judgementmechanism to reduce integration
signal peak-to-average power radio (Peak-to-Average
Power Ratio, PAPR). The main idea of the
algorithm is that performing PAPR suppression
processing on multi-carrier modulated integration signals, and
processing module structure is two-stage cascaded SLM
algorithm modules and judgment mechanism modules between the SLM
algorithm modules; directly serving a PAPR value of a stage I output
signal as a final output
signal of a PAPR suppression module if the PAPR value of the stage I output signal is less than the threshold PAPRth set by the
system; and inputting thePAPR value of the stage I output signal into a
stage II SLM algorithm module to preform PAPR suppression
processing again if the PAPR value of the stage I output signal is not less than the thresholdPAPRth set by the
system.
Simulation results show that compared with a traditional one-stage SLM algorithm, the J-Ca-SLM algorithm can not only greatly reduce the computational complexity of a traditional SLM algorithm, but also have a better PAPR suppression effect, and does not affect system performances of multi-carrier integration signals.