COMBINED MULTI-STAGE CREST FACTOR REDUCTION AND INTERPOLATION OF A SIGNAL

摘要

Methods, systems, and apparatuses are described for performing combined crest factor reduction and interpolation on a signal to be transmitted on a wireless channel. A sample based on a signal to be transmitted on a wireless channel may be received at each stage of a plurality of cascaded stages in a transmitter of a wireless device. The sample at each of the stages may be clipped to produce a clipped version of the sample for that stage. The clipped version of the sample for each of the stages may be upsampled to produce an upsampled and clipped version of the sample for that stage. The upsampled and clipped version of the sample for each of the stages may be processed with a filter implementing a combination of crest factor reduction filtering and interpolation filtering of the upsampled and clipped version of the sample for that stage.

主权项

1. A method of performing combined crest factor reduction and interpolation on a signal to be transmitted on a wireless channel, comprising:
receiving, at each stage of a plurality of stages in a transmitter of a wireless device, a sample based on the signal to be transmitted on the wireless channel; clipping the sample at each of the stages to produce a clipped version of the sample for that stage; upsampling the clipped version of the sample for each of the stages to produce an upsampled and clipped version of the sample for that stage; and processing the upsampled and clipped version of the sample for each of the stages with a complex filter implementing a combination of crest factor reduction filtering and interpolation filtering of the upsampled and clipped version of the sample for that stage.