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Simulations

Digital modulations, Error Control Coding schemes, Channel Estimation Simulations, Medical Images reconstructions and FEM simulations

LDPC Decoder

  • Project: ldpc_stochastic_decoder
  • An implementation of a Low Density Parity Check (LDPC) Stochastic decoder based on research done by Qualcomm

Finite Difference Model

  • Project: finite_difference_electric_dipole
  • A solution of a spherical version of the Laplace equation to analyze the effect of a dipole in the human brain. Solved via two boundary conditions: Neumann and Dirichlet.

Physical Telecommunication Link

  • Project: wireless_link
  • A Complete 100 meter link between a receiver and a transmitter with a total bandwidth of 0.5 MB/s
  • A high frequency PCB was designed in Keysight ADS and manufactured. Electronic components include:
    • LNA
    • Modulator/Demodulator
    • LO/IF Amplifers
    • Up and Downconversion Mixers
  • Software, implemented in MATLAB, system components include:
    • Course/Fine frequency and frame synchronizations and corrections
    • Phase estimations and corrections
    • Constellation normalization
    • Optimal Maximum-Likelihood (ML) Detector
    • Message display (PC)

Urban Environment Telecommunication Simulation

  • Project: communication_system_over_a_fading_channel
  • Simulation of an over the air transmission channel
  • Based on a Rayleigh distribution for a non-line of sight, urban city environment
  • Orthogonal frequency division multiplexing (OFDM) transmission over the channel
  • Coded and uncoded transmission (error control coding scheme: repetition)

90nm Differential Amplifer

  • Project: 90_nm_differential_amplifier
  • Four circuits make up the design: push-pull, differential pair, high swing cascode current sink and bootstrapped current source
  • Design is compared versus a production 90 nm differential amplifier

Image Processing

  • Project: image_processing:
  • computed_tomography:
    • Backprojection algorithm to reconstruct a medical CT image
  • diffusion_tensor_imaging:
    • Analysis of a MRI mamalogram producing FA (Fractional Anisotropy), VR (Volume Ratio), MD (Mean Diffusivity)
    • Diffusion Signal Curve Fitting
    • PDD (Principal Direction of Diffusion) on major cerebral arteries
  • image_segmentation_and_reconstruction:
    • ART (Argebraic Reconstruction Techniques) Kaczmarz algorithm