Sökning: "ADC"

Visar resultat 21 - 25 av 108 avhandlingar innehållade ordet ADC.

  1. 21. Pipeline Analog-Digital Converters Dynamic Error Modeling for Calibration : Integral Nonlinearity Modeling, Pipeline ADC Calibration, Wireless Channel K-Factor Estimation

    Författare :Samer Medawar; Peter Händel; Niclas Björsell; Magnus Jansson; Dominique Dallet; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Analog-digital converter; integral nonlinearity; calbiration; K-factor estimation;

    Sammanfattning : This thesis deals with the characterization, modeling and calibration of pipeline analog-digital converters (ADC)s. The integral nonlinearity (INL) is characterized, modeled and the model is used to design a post-correction block in order to compensate the imperfections of the ADC. LÄS MER

  3. 22. ADC modeling from a system perspective and design of RF-sampling radio receivers

    Författare :Kalle Folkesson; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The analog-to-digital converter (ADC) is the key component in many modem electronic systems. Examples are wire-line communication systems such as digital subscriber line modems, wireless communication systems such as radio receivers, and sensor systems such as military radar. LÄS MER

  4. 23. Diffusion MRI: Aspects of Reproducibility and Novel Segmented 2D and 3D Approaches for Higher Resolution and Geometric Fidelity

    Författare :Jens Johansson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diffusion-weighted imaging; 3D-DWI; Time-Dependent ADC; DWi; Diffusion Time; Multi-Shot DWI; Echo- Planar Imaging; Geometric Distortion;

    Sammanfattning : Diffusion-weighted imaging (DWI) is a very useful tool for non-invasive imaging and clinical investigation of the human body. It provides data of the water diffusion process. LÄS MER

  5. 24. Low Complexity Techniques for Low Density Parity Check Code Decoders and Parallel Sigma-Delta ADC Structures

    Författare :Anton Blad; Oscar Gustafsson; Zhongfeng Wang; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Elektronik;

    Sammanfattning : Since their rediscovery in 1995, low-density parity-check (LDPC) codes have received wide-spread attention as practical capacity-approaching code candidates. It has been shown that the class of codes can perform arbitrarily close to the channel capacity, and LDPC codes are also used or suggested for a number of important current and future communication standards. LÄS MER

  7. 25. Design of Multi-bit Sigma-Delta Modulators for Digital Wireless Communications

    Författare :Bingxin Li; KTH; []
    Nyckelord :sigma delta modulator wirelss ADC;

    Sammanfattning : The ever advance of CMOS digital circuit process leads tothe trend of digitizing an analog signal and performing digitalsignal processing as early as possible in a signal processingsystem, which in turn leads to an increasing requirement onanalog- to-digital converter (ADC). A wireless transceiver is asuch kind of signal processing system. LÄS MER