Crest factor reduction

摘要

A method is presented which performs crest factor reduction (CFR) on a digitized signal. The method may include determining one or more peak values in a series of data samples of a communication signal, and/or generating a peak queue comprising the one or more peak values that exceed a threshold value and a corresponding index values for each peak value. The method may further include generating, from the peak queue, an entry to a clip table, the entry including a clip coefficient at the corresponding index value, updating the clip table to include a new clip coefficient at a new corresponding index value when the clip function squared at the new index value exceeds a scaled output power for an input power at the new corresponding index value, and/or clipping the series of data samples in a neighborhood of the peak value according to the clip function.

主权项

1. A method, comprising:
determining one or more peak values in a series of data samples of a communication signal; generating a peak queue comprising the one or more peak values that exceed a threshold value and a corresponding index value for each peak value; generating, from the peak queue, an entry to a clip table, the entry including a clip coefficient at the corresponding index value; updating the clip table to include a new clip coefficient at a new corresponding index value when a clip function squared at the new corresponding index value exceeds a scaled output power for an input power at the new corresponding index value; and clipping the series of data samples in a neighborhood of each peak value according to the clip function.