Patent ID: 8326238
Filing Date: 2012-12-04
Classification: H03F,H04B,H04L,H04W

Abstract:
1. In a wireless transmission system adapted for use with a portable mobile device, a method for processing signals in preparation for wireless transmission, wherein the wireless transmission includes use of a power amplifier, the method comprising: maintaining a lookup table that contains pre-computed distortion contributions determined by monitoring the power amplifier following initialization of the power amplifier and prior to transmission, wherein determining distortion contributions includes: accepting a value that reflects information to be communicated, the value hereinafter referred to as original value; generating a lookup-table key based on the original value, wherein the lookup-table key is digital; retrieving from the lookup table, using the lookup-table key, a pre-computed distortion contribution for the original value; distorting the original value based on the pre-computed distortion contribution to obtain a distorted value to pre-compensate for nonlinear characteristics of the power amplifier; and wirelessly transmitting based on the distorted value.