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Keysight Technologies
Wideband Digital Pre-Distortion
with SystemVue and PXI Modular Instruments
Application Note
Introduction
A transition is now underway in the bandwidths to achieve throughputs of Because smart phones and other
wireless communications industry, as at least 1 Gb/s for multi-station and advanced wireless devices rely so
wireless service providers embrace 500 Mb/s maximum for a single link. heavily on battery power, getting the
broadband communication standards most efficiency out of a design is
such as LTE-Advanced and IEEE For the communications system critical. The RF PA plays a particularly
802.11ac. In order to achieve Gb/s architect and the RF power amplifier key role Choosing and designing the
link-level throughput, these new (PA) designer, these new formats right PA to meet design goals is a
formats use wider bandwidths, introduce a number of challenges. significant challenge.
multiple-input multiple-output (MIMO) Designers must determine the
space-time coding, and higher performance gap between their This application note outlines a
order orthogonal frequency division existing 3G designs and tomorrow's broadband modeling approach that
multiplexing (OFDM) modulation 4G operating environments, and