Get in Toucharrow


Crest Factor Reduction (CFR)


We know that we are already moving beyond 4G technologies to the next generation of 5G and 6G technologies, which brings back the value of quality of Services with Efficient products that apply to most industries, such as Machine Learning, Artificial Intelligence, Radio Antenna technology/ Audio Electronics, Radar/Sensors, Physiology, and so on.

Faststream Technologies is already providing 5G solutions from equations to OTA to real-time demos by concentrating on greater levels of throughput. However, the main aim of this technology is to integrate vast amounts of data via transmitters and receivers so that MIMO systems contribute sufficiently to boosting spectral efficiency.

Crest Factor

RF testing signals are thus delivered straight to antenna systems with the RF no longer suitable for 5G device systems, which Crest Factor Reduction (CFR) improves the efficiency of RF power amplifiers by lowering the Peak Power to the Average Power ratio.


Crest Factor Reduction (CFR) is a technique for lowering a waveform’s power ratio from higher to average. It is used in wireless communications and other applications to restrict the dynamic range of signals being sent. The peak-to-average rate of multi-user and multi-carrier signals is frequently high.


CFR is frequently connected with Digital Pre-Distortion (DPD) in modern transmit chains, which function as Linearized Power Amplifiers (LPAs), allowing for optimal efficiency. We have simulation models in Structural Verilog and MATLAB and suggest CFR Coefficients developed by MATLAB Functions. System Verilog is the hardware description language used for both design and verification, together with the MATLAB model, which is used for both exploring design options and verifying the design against simulation results.


Features and Benefits:


  • System-configurable for use with single-channel, multi-channel, and mixed-mode transmission systems.
  • Compatible with digital pre-distortion (DPD) and envelope tracking technologies (ET).
  • The target resource footprint is small.
  • Clock-to-sample ratios of 1, 2, 3, 4, and 8 are configurable.
  • Power and frequency dynamics are supported.
  • Support for one, two, four, eight, and sixteen antennas.
  • Provides considerable PAPR reduction from a single iteration structure, reducing additional delay.