Peak to average power ratio reduction

DETAILED DESCRIPTION The present inventions provide methods and systems for estimating the distortion of a received signal.
Generally, any type of distortion may be estimated in order to better decode he received signal.
In one embodiment the distortion is intentionally introduced into the signal in order to reduce the peak to average power ratio of a single carrier or multi-carrier signal.
Reducing the peak to average power ratio of a signal ensures that amplifiers and transmitters are not saturated, causing loss of data.
Further, reducing peak to average power ratios reduces the consumption of power during transmission.
In another embodiment of the present inventions the distorted signal is transmitted without further attempts to embed information about the distortion back into the signals.
Rather, a receiver receives the distorted signal and estimates the missing information about the signal.
The receiver reconstructs the original signal based upon the estimates of the distortion of the signal.
In one particular embodiment, the signal is clipped as the form of distortion.
The receiver estimates the clipped portions of the signal in order to estimate and reconstruct the original signal.
In alternate embodiments some information about the clipping of the signal is sent, such as the number of clips, magnitude of the clipping or information about the largest clip.
In alternate embodiments, side information is also provided to the receiver about the distortion.
These and other advantages of the present invention will become apparent to those skilled in the art upon a reading of the following descriptions of the invention and a study of the several figures of the drawing.