High-Speed Real-Time Signal Processing

Digital Signal Processing (DSP) is a key element to mitigate transmission impairment and efficiently exploit channel capacity in communication systems. The real-time implementation of such algorithms enables a quick and practical proof of concept with a realistic DSP. Furthermore increasing data rates require massive parallel signal processing only feasible with programmable hardware devices. The expertise of Fraunhofer HHI can help you to successfully face the challenge of developing cost-effective, highspeed IP Cores.


  • Optimized HDL implementation of custom DSP
  • Customizable adjustments of available IP-Cores
  • Simulation and FPGA implementation of HDL Code
  • Experimental validation through transmission experiments


  • High-Speed DAC and ADC Synchronization
  • High-bandwidth FPGA Interfacing
  • Highly parallel digital signal processing
  • Efficient FPGA resource utilization
  • Compliance with demanding time requirements
  • Target devices Xilinx Virtex FPGA families

Single-carrier transmission with frequency-domain equalization

  • Frame synchronization
  • Carrier frequency recovery
  • Channel estimation
  • 2 × 2 MIMO frequency-domain equalizer

Digital OLT for coherent UDWDM PONs

  • Clock recovery
  • Digital subcarrier demultiplexing
  • 2 × 2 MIMO time-domain equalizer

Generation of Higher-Order Modulation Formats

  • Parallel differential coding and decoding
  • Parallel electronic predistortion