Pipelined FFT


Comcores Fast Fourier Transform (FFT) IP core is an implementation of a Cooley-Tukey FFT algorithm, a computationally efficient method for calculating the Discrete Fourier Transform (DFT). The FFT IP uses a Radix-2, Decimation-In-Time (DIT) and pipelined architecture targeting high performance systems where high throughput is a key requirement.

The FFT IP core comes with a large variety of run-time configurations such as FFT/IFFT mode, gain control, and transform size which makes it suitable for a large variety of applications such as OFDM systems (e.g. LTE or New Radio) and real-time signal analysis. For any high performance application the FFT IP core delivers on your need for speed and performance whether the target is FPGA or ASIC.

Block Diagram

Comcores Pipelined FFT diagram

Key Features

Richly Featured

  • Supports both FFT and IFFT transformation
  • Uses a Cooley-Tukey decimation in time algorithm with radix-2 sizes and pipelined architecture
  • Scaled fixed-point, where user provides the scaling schedule or block floating-point with run-time automatic adjusted scaling
  • Complex input and output
  • Accepts input sample every clock cycle
  • Automatic or manual gain control

Silicon Agnostic

  • Designed in SystemVerilog and targeting both ASICs and FPGAs

    Highly Configurable

    • Configurable for many operating modes
    • Support both FFT and IFFT computations
    • Run-time configurable transform lengths of size 8 – 65535
    • Natural or bit-reversed ordering on inputs
    • Direct or natural ordering on output
    • Single RTL code base supports all configurations

    Easy to use

    • Simple configuration signals for run-time configurations
      and enabling/disabling of features
    • Test bench is included
    • Comes with a bit-accurate software model for easy performance evaluation in evaluation tools e.g. Matlab


    The IP Core can be delivered in Source code or Encrypted format. The following deliverables will be provided with the IP Core license:

    • Solid documentation, including User Manual, Release Note and Product Brief.
    • Simulation Environment, including Simple Testbed, Test case and Test Script.
    • Software Model included.
    • Access to support system and direct support from Comcores Engineers.
    • Timing Constraints in Synopsys SDC format (optional).
    • Synopsys Lint (optional).
    • Synopsys Lint waiver (optional).

    Related Products

    What Comcores IP will do for you


    Proven Quality

    Solid process and predictability

    Strong verification

    Faster Time-to-Market

    First in bringing out new solutions

    Tremendous investments in research


    Long-term experience in communication protocols

    Expert in executing digital design projects

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