name: DPD
full_form: Digital Pre-Distortion
context: the analog and hybrid beamforming, which are predominantly used in FR2 radios, also pose challenges for DPD implementation. With hundreds to thousands of PAs and higher operating bandwidths for FR2 radio, simply utilizing a similar DPD architecture as in FR1 would cost extra for RF hardware design and power consumption, while it may be infeasible to deploy single DPD for every PA in the analog/hybrid beamforming phased array since several or all analog chains essentially share one digital path. The DPD algorithms would also have more demands on the bandwidth of feedback receiver/ADC and BB signal processing resources, which are scaled with the size of bandwidth to be linearized. These limited-gain and implementation-challenge factors make the similar DPD implementations as in FR1 less attractive to the FR2 single-band BS. Nevertheless, DPD may still bring benefit for FR2 BSs in terms boosting the overall system performance (e.g. throughput due to improved EVM, or very possibly energy
description: Digital Pre-Distortion (DPD) is a technology used to linearize the power amplifiers (PAs) in radio frequency (RF) systems, particularly in 5G base stations. It aims to improve the overall system performance by reducing errors and increasing efficiency.
explanation: The context describes DPD as a technology used to enhance the performance of RF systems, specifically mentioning its application in 5G base stations. This clearly places it within the 'Technology' category.
section_title: 5.2.2.1DPD for FR2 single-band BS
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