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