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Digital Signal Processing & Communications 🛰️

This repository is a comprehensive collection of implementations and simulations for various Digital Signal Processing (DSP) and Communication System concepts. It includes work on filtering, modulation, and system modeling using MATLAB, Simulink, and C.

📁 Key Project Categories

1. Filter Design & Transforms

Implementations of standard signal processing filters and transformation techniques.

  • Filter Types: IIR, LIR, Highpass, and Lowpass filter designs.
  • Mathematical Transforms: Bilinear transforms (bilinear1.m) and Chebyshev filter approximations.
  • Impulse Response: Analysis and modeling of system impulse responses (impulse.m).

2. Communication Systems & Modulation

Simulations of analog and digital modulation schemes.

  • FM Modulation: Frequency Modulation modeling and analysis.
  • Digital Communication: Pulse Code Modulation (PCM) and Differential Pulse Code Modulation (DPCM) scripts.
  • Spread Spectrum: Direct Sequence Spread Spectrum (dsss.slx) and Fading models.

3. Signal Analysis

General signal processing utilities for data output and study.

  • Modulation Analysis: Studies on FM and other modulation techniques.
  • Simulink Models: Hardware-level modeling for communications via .slx files.

🛠️ Tools Used

  • MATLAB: Core scripting for algorithm development and filter design.
  • Simulink: System-level block modeling for communication pipelines.
  • C / C++: Embedded implementations of DSP logic.

🚀 How to Use

  1. MATLAB Files (.m): Open in MATLAB and run individual scripts to view plots and signal outputs.
  2. Simulink Models (.slx): Open in Simulink to view the block-level system architecture and run time-domain simulations.
  3. Data Files (.mat): Load into the MATLAB workspace using load('filename.mat') for post-processing.

📈 Learning Objectives

  • Mastering the transition from analog to digital domains via Bilinear transformation.
  • Analyzing signal integrity under fading conditions in communication channels.
  • Designing and implementing efficient digital filters for signal isolation .

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A repo of few MATLAB codes in Electronics Communication design

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