A peak cancellation method for ofdm system
A technology of peak value and threshold value, which is applied in the field of wireless communication, can solve the problems of serial offset processing multi-interference and calculation complexity, and reduce complexity, so as to achieve the effect of PAPR suppression performance improvement, interference reduction, and avoiding recalculation
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[0050] Below in conjunction with accompanying drawing and embodiment, describe technical solution of the present invention in detail:
[0051] Main steps of the present invention include:
[0052] a. Confirm the signal peak value: according to the index order of the OFDM signal sample point value in the time domain, by comparing the signal amplitude with a given threshold value and comparing the signal amplitude values, find a signal peak value exceeding the threshold;
[0053] b. Peak cancellation: taking the signal peak value obtained in step a as the center and subtracting a weighted cancellation function of length L, so that at least the amplitude value of the peak value is equal to the threshold value;
[0054] c. Judging whether the sample points of one OFDM symbol have been traversed, if so, then end; if not, then return to step a.
[0055] Correspondingly, the main steps of implementing the algorithm are: 1. Comparing the signal amplitude with the threshold value TH; ...
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