Linearization of power amplifiers with mismatched output impedance using on-line digital pre-distortion structure
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چکیده
منابع مشابه
Fundamentals of Power Amplifier Linearization Using Digital Pre-Distortion
Pre-distortion is basically a method by which one first stimulates a non-linear power amplifier (PA) with baseband samples and then observes the result of that stimulus at the PA output. Then , the amplitude-toamplitude modulation (AM/AM) and amplitude-to-phase modulation (AM/PM) effects of the PA are estimated. These estimated distortions are then removed from the PA by pre-distorting the inpu...
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With the advent of spectrally efficient wireless communication systems employing modulation schemes with varying amplitude of the communication signal, linearisation techniques for nonlinear microwave power amplifiers have gained significant interest. The availability of fast and cheap digital processing technology makes digital pre-distortion an attractive candidate as a means for power amplif...
متن کاملAdaptive Power Amplifier Linearization by Digital Pre-Distortion with Narrowband Feedback using Genetic Algorithms
To my parents, Raymonde and Roland, my sisters Catherine and Madeleine, and all of my friends. iii ACKNOWLEDGEMENTS I want to express my appreciation to the following people for their help over the past several years. Their support has made my completion of this program possible. First and foremost, I would like to thank my advisor whom through knowledge, experience and passion guided my gradua...
متن کاملOverview On The Modeling And Digital Linearization Of Power Amplifiers
In modern transmitting devices the digital predistortion technique is widely used for linearizing the power amplifier. There are many algorithms realizing predistortion technique with a different complexity and a stability of results. The several methods are described and compared. The orthogonal polynomials with memory were has proved to be simple enough with suitable results, so it was chosen...
متن کاملPre-distortion Algorithms for Power Amplifiers
Future wireless networks are expected to provide ubiquitous access to high data rate services with a quality up to — and even beyond — today’s common standards for fixed-line connections. To achieve this goal, modulation schemes with a high spectral efficiency need to be utilised. However, these schemes are very susceptible to nonlinear distortions. On the other hand, the radio frequency power ...
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ژورنال
عنوان ژورنال: IEICE Electronics Express
سال: 2019
ISSN: 1349-2543
DOI: 10.1587/elex.16.20190207