Method and device for reducing peak to mean ratio of signal

Abstract

The invention discloses a method and a device for reducing the peak to mean ratio of a signal. The method comprises the following steps of: acquiring maximum peak values from each peak value window length range in an original signal; generating peak value canceling pulses corresponding to each maximum peak value according to the amplitude, phase and position information of the maximum peak values in each peak value window length range; and performing combination on the peak value canceling pulses corresponding to each maximum peak value, and combining the combined pulses and the original signal to obtain a peak-clipped signal. In the method and the device, peak-clipping processing is performed on the maximum peak values in the peak value window length ranges, peak value positions are rationally selected by regulating two parameters comprising a peak value window scheduling interval and a peak value window length under the condition of dense discontinuous carrier peak value distribution to avoid the regeneration of peak values, reduce the number of consumed canceling pulse generator (CPG) modules and achieve better peak-clipping effects under the condition of meeting identical error vector magnitude and an adjacent channel leakage power ratio index.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and device for reducing the peak-to-average ratio of signals. Background technique [0002] With the development of communication technology, spectrum multiplexing technology is more and more applied in high-speed data transmission services. But for the spectrum multiplexing communication system, the discontinuous configuration of the carrier is gradually applied, and the peak-to-average ratio of the transmitted signal is very large. The transmitter of the wireless base station in the communication system uses a power amplifier to transmit signals to compensate for the signal attenuation caused by the propagation distance. The transmission signal with a large peak-to-average ratio reduces the efficiency of the power amplifier, and it is necessary to adopt corresponding technologies to reduce The peak-to-average ratio of the signal input to the power amplifier. ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and device for reducing the signal peak-to-average ratio, so as to solve the problem in the prior art that the peak-to-average ratio of the non-continuous carrier signal is very large

Images