Agilent 5990-8883EN English 2014-08-01 PDF 1.26 MB c20140910 [18] free download

File name 5990-8883EN English _ 2014-08-01 _ PDF 1.26 MB c20140910 [18].pdf

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