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Digital Pre-Distortion (DPD)

Product Description

Xilinx provides a market leading DPD solution that reduces CapEx and OpEx

Digital Pre-Distortion (DPD) is one of the most fundamental building blocks in wireless communication systems today. It is used to increase the efficiency of Power Amplifiers. By reducing the distortion created by running Power Amplifiers in their non-linear regions, Power Amplifiers can be made to be far more efficient. Wireless base stations not employing CFR or DPD algorithms typically exhibit low efficiency, and therefore high operational and capital equipment costs. A typical Class AB LDMOS Power Amplifier with WCDMA waveforms may have approximately 8-15% efficiency. With CFR and DPD turned on, this efficiency can grow to as much as 30-40%, resulting in tremendous savings in CapEx and OpEx for network operators. With later generations of Power Amplifier design leveraging Doherty architectures, efficiencies in the 40%+ range with Xilinx DPD are possible.

The Xilinx DPD core reduces implementation time by providing a high performance DPD solution to customers as a parameterizable core rather than one that needs to be customized by hand. Furthermore, Xilinx DPD is tuned for implementation in Xilinx FPGAs, resulting in a very small FPGA footprint and the lowest cost FPGA solution available today.

Xilinx DPD v7.0 supports the following air interface standards:

  • LTE FDD/TDD
  • LTE/LTE-Advanced
  • TD-SCDMA
  • WCDMA
  • WiMAX
  • CDMA2000
  • MC-GSM

 

Key Features & Benefits

Algorithms

  • DPD correction of up to 40 dB of ACLR improvement
  • Maximum instantaneous bandwidth of 100MHz
  • Support for signal dynamics
  • TDD support with automatic data selection
  • Feedback receiver Quadrature modulator correction
  • PA saturation (overdrive) detection
  • Signal capture and analysis
  • Easy integration and evaluation using the Debug Interface utility

Physical Configuration Parameters

  • Selection of phase options for datapath implementation allowing a resource/sample rate trade off
  • Selection of one, two, four or eight transmit antennas
  • Selection of two filter/capture depth combinations allowing for resource/performance trade off

Featured Documents

Tools and Device Support

Device Family Support:

Design Tools Support:

Product Vendor:

Xilinx
xilinx-131x43
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Part Number:

EF-DI-DPD-SITE

Featured Documents