Optimizing Performance and Efficiency of Pas in Wireless Base Stations: Digital Pre-Distortion Reduces Signal Distortion at High Power Levels

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Executive Summary

Rapid growth in both subscribers and digital content is stressing wireless infrastructures as more data traffic demand is placed on a limited amount of the wireless spectrum. Meeting this demand has escalated procurement costs for base station systems and their operating expenses, which are driven by high energy consumption. Base station Power Amplifiers (PAs) - the devices that drive wireless signals outward from a base station - can account for as much as 30 percent of a base station's cost. Implementing Crest Factor Reduction (CFR) and Digital Pre-Distortion (DPD) techniques before wireless signals reach the base station PA can improve the quality and coverage of the base station's signal while reducing the system's procurement and operating costs.

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