Digital Front End (DFE) Demo

Optimized for HetNet small cells and low power radios

Please note, we have updated our Privacy Policy and Cookies Policy.

Lattice DFE (Digital Front End) demo provides a digital solution consisting of CPRI (Common Public Radio Interface), DUC (Digital Up Converter) and CFR (Crest Factor Reduction) for 2 antenna, LTE (Long-Term Evolution) 2x2 MIMO (Multiple-Input, Multiple-Output) application. The demo design has been designed to work with the LatticeECP3 I/O Protocol Board.

DFE Demo Diagram

The demo uses Ethernet to transfer DFE stimulus and output data between a PC and the board. The stimulus and output data of DFE are stored in on-board DDR3 memory.

Features

  • 2.45Gbps CPRI line rate: 2 x 20MHz LTE baseband signals
  • Input 20MHz LTE baseband signal bandwidth with 30.72Msps sample rate
  • Output data with 122.88Msps sample rate
  • DUC (Digital Up Conversion): two antennas, parallel processing
  • CFR (Crest Factor Reduction): two stages with total 10 clip engines with two antennas
  • DUC and CFR work frequency: 122.88MHz
  • Input signed 15-bit I/Q data
  • Output signed 16-bit I/Q data
  • Gigabit Ethernet connection
  • 500Mbps DDR3 data rate

Jump to

Block Diagram

Documentation

Quick Reference
TITLE NUMBER VERSION DATE FORMAT SIZE
DFE Demo User's Guide
UG68 1.0 9/1/2013 PDF 2.2 MB