Project: Simulink and Code Generation using Real-Time Workshop : Rayleigh Fading Channel

Date Completed: September 18, 2003

Fading is one of the important obstacles which limits the wireless transmission. Deep fading will cause loss of signal at the receiver. The transmitted signal will arrive at the receiver antenna through multiple paths which causes what is known as multipath fading. Each path has its own delay and attenuation and the received signal amplitude is the collective effect of the signals arrived through different paths.

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Project: Simulator of a New Approach in Matrix Inversion Calculation: Conical Systolic Array

Date Completed: September 03, 2003

The way that this array calculates the inverted matrix has been thoroughly studied in this paper: "Conical Systolic Array for Matrix Inversion" by H.S.Shahhoseini, A.Khayatzadeh, and M.Naderi (The paper). Herein, I explain the structure of the simulator program which was written by me with C++ language (2800+ LOC).

The mentioned conical systolic array (CSA) uses three types of processing elements (PEs). Each PE has been defined as an object in C++. For writing the program as modular as possible and taking advantage of virtual functions and also gathering the common functionalities of the PEs, a base class with the name of PE has been defined. The three types of PEs have been derived from this base class using public inheritance and the exclusive functionalities of each PE have been implemented in the respective class. These classes have been named according to their shapes in the paper as: EllipticPE, CircularPE, SquarePE. It should be mentioned that all four classes have been implemented regardless of the matrix dimension but due to some synchronization difficulties in one of the clock calculations, the main() function has some irregularities which prevents its generalization to any matrix dimension and in its current state, it is capable of matrix inversion calculation for a 3×3 matrix. The issue was under consideration of the authors of the paper but in the mean time, I was asked to conclude the project; in case that the problem is resolved, only the main() function will need modifications and the PEs' implementations won't need further changes.

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Projects/Papers: Optimization Techniques in Electromagnetic Problems

Date Completed: August 05, 2003

The following papers are the results of a cooperation between Dr.Lotfi, the antenna and communications circuits labs instructor, and I. My work, for the main part, was helping in the implementation of the optimization algorithms in the projects and also comparing the obtained results with the ones produced by HP-HFSS software. I also had the opportunity to consult with Prof. Hojjat Kashani ,my Antenna course instructor, in the areas of antennas and microwave devices. The results of the application of the mentioned optimization techniques to some electromagnetic problems are documented in the following papers.

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Project: A DSP Educational Package

Date Completed: June 09, 2003

This project has been conducted in a teamwork manner. Some important concepts of an introductory course on DSP were chosen. First, few were responsible for implementing the code in Matlab using M-files, and at the next stage, others were responsible for transferring the code to GUIs so that the users can enjoy the comfort of windows-based execution. This package was supposed to serve as an educational aid package for the DSP course at MS level and the book “Discrete-time signal processing” by: Alan V. Oppenheim, Roland W. Schafer, and John R. Buck was chosen as the reference.

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Project: Linear Control: Position Control Systems Response Optimization

Date Completed: November 20, 2002

The objective of this experiment is investigating the response of a system with velocity & position feedback and the effect of addition of a controller to this system.

The output potentiometer shows the current angle (position) of the output, the input potentiometer specifies the desired angle which should be followed by the output potentiometer.

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