Patent ID: 6741661
Filing Date: 2004-05-25
Classification: H04B,H04L

Abstract:
An apparatus comprising:a peak-to-average reduction module, wherein the reduction module is an inverted raised cosine function and wherein the inverted raised cosine is 1âˆ’&agr;(cos2x), where a=(Ecurrent_max-EavEcurrent_max),â€ƒEav is average power for a current period, and Ecurrentâ€”max is a maximum value of the signal's envelope for a current window that is configured to generate a reduced peak-to-average signal, in response to a peak in a signal that exceeds a target threshold value, by applying a reduction function continually to the peak and terminating the application of the reduction function when the peak is reduced to or below the target threshold value; and a power amplifier that is configured to amplify the reduced peak-to-average signal.