Essays about: "predistortion"

Showing result 6 - 10 of 17 essays containing the word predistortion.

  1. 6. Different Digital Predistortion Techniques for Power Amplifier Linearization

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Ibrahim Can Sezgin; [2016]
    Keywords : DPD; Digital Predistortion; Forward Behavioral Modeling; Power Amplifier; Non-Linearity; Memory Effect; Volterra Series; Memory Polynomial; Generalized Memory Polynomial; Simplified Volterra Series; Augmented Complexity Reduced Generalized Memory Polynomial; Augmented Complexity Reduced Simplified Volterra; Technology and Engineering;

    Abstract : Linearity and high efficiency are crucial requirements for any power amplifier. However, power amplifiers have high efficiency levels when they are in non-linear regions. To overcome this issue there have been many suggestions in literature, one of the most successful methods is digital predistortion method. READ MORE

  3. 7. Machine Learning for PAPR Distortion Reduction in OFDM Systems

    University essay from KTH/Signalbehandling

    Author : Manish Sonal; [2016]
    Keywords : Index Terms- OFDM; machine learning; PAPR; neural networks;

    Abstract : The purpose of the project is to investigate the possibility of using modern machine learning to model nonlinear analog devices like the Power Amplifier (PA), and study the feasibility of using such models in wireless systems design. Orthogonal frequency division multiplexing (OFDM) is one of the most prominent modulation technique used in several standards like 802. READ MORE

  4. 8. The Design and Linearization of 60GHz Injection Locked Power Amplifier

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Luhao Wang; [2016]
    Keywords : Power Amplifier; Injection-locking; Adaptive biasing; predistortion; Technology and Engineering;

    Abstract : The RF power amplifier is one of the most critical blocks of transceivers, as it is expected to provide a suitable output power with high gain, efficiency and linearity. In this paper, a 60-GHz power amplifier based on an injection locked structure is demonstrated in a standard 65 CMOS technology. READ MORE

  5. 9. Analysis of Digital Predistortion in a Wideband Arbitrary Waveform Generator

    University essay from Linköpings universitet/Kommunikationssystem

    Author : Marcus Eriksson; [2015]
    Keywords : Digital Predistortion; Nonlinear Systems; Linearization; Inverse System Estimation;

    Abstract : Digital predistortion is a signal processing technique used to remove undesired distortions caused by nonlinear system effects. This method is predominately used to linearize power amplifiers in communication systems in order to achieve efficient transmitter circuits. READ MORE

  6. 10. Linearization of Power Amplifier using Digital Predistortion, Implementation on FPGA

    University essay from Linköpings universitet/Elektroniksystem

    Author : Erik Andersson; Christian Olsson; [2014]
    Keywords : Digital predistortion; Power amplifier; Nonlinear models; FPGA; Linearization; Jamming;

    Abstract : The purpose of this thesis is to linearize a power amplifier using digital predistortion. A power amplifier is a nonlinear system, meaning that when fed with a pure input signal the output will be distorted. The idea behind digital predistortion is to distort the signal before feeding it to the power amplifier. READ MORE