Search for dissertations about: "linearization"

Showing result 1 - 5 of 90 swedish dissertations containing the word linearization.

  2. 1. Transmitter Linearization for mm-Wave Communications Systems

    Author : Halil Volkan Hünerli; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; linearization; transmitter; mm-wave power amplifier; Eband; analog predistorter; digital predistortion;

    Abstract : There is an ever increasing need for enabling higher data rates in modern communication systems which brings new challenges in terms of the power consumption and nonlinearity of hardware components. These problems become prominent in power amplifiers (PAs) and can significantly degrade the performance of transmitters, and hence the overall communication system. READ MORE

  4. 2. On the linearization of non-Archimedean holomorphic functions near an indifferent fixed point

    Author : Karl-Olof Lindahl; Andrei Khrennikov; Franco Vivaldi; Växjö universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dynamical system; linearization; conjugation; non-Archimedean field; Algebra; geometry and mathematical analysis; Algebra; geometri och analys; Mathematics; Matematik;

    Abstract : We consider the problem of local linearization of power series defined over complete valued fields. The complex field case has been studied since the end of the nineteenth century, and renders a delicate number theoretical problem of small divisors related to diophantine approximation. READ MORE

  5. 3. Multivariate calibration of near infrared reflectance data from food products : experimental design, linearization and applications

    Author : Tomas Isaksson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; principal component regression PCR ; Selection of calibration samples; nonlinear calibration; sensory analysis; linearization; multivariate calibration; locally weighed regression LWR ; heating temperature of meat; peas; calibration sample selection algorithms; multiplicative scatter correction MSC ;

    Abstract : .... READ MORE

  6. 4. Wideband CMOS Data Converters for Linear and Efficient mmWave Transmitters

    Author : Victor Åberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CMOS; Efficient; MIMO; Predistortion; mmWave; RF-DAC; Wideband; SAR ADC; Linear; Linearization;

    Abstract : With continuously increasing demands for wireless connectivity, higher carrier frequencies and wider bandwidths are explored. To overcome a limited transmit power at these higher carrier frequencies, multiple input multiple output (MIMO) systems, with a large number of transmitters and antennas, are used to direct the transmitted power towards the user. READ MORE

  7. 5. Digital Compensation Techniques for Power Amplifiers in Radio Transmitters

    Author : Jessica Chani Cahuana; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear system; linearization; power amplifier; iterative learning control; digital predistortion; Volterra series;

    Abstract : Power amplifiers (PAs) are vital components in radio transmitters because they are responsible to amplify the low power communication signals to power levels suitable for transmission. Important requirements of PAs are high efficiency and linearity. Unfortunately, there is a tradeoff between efficiency and linearity. READ MORE