The project focuses on Amplitude Modulation (AM), Double Sideband Suppressed Carrier (DSBSC), and Single Sideband (SSB) modulation and demodulation using Simulink in MATLAB. The study involves:
- Circuit design and simulation for AM, DSBSC, and SSB modulation.
- Signal-to-Noise Ratio (SNR) analysis at different levels (5dB, 12dB, 23dB).
- Power spectrum and frequency domain analysis.
- To analyze how analog communication systems function.
- To understand the effects of different modulation indices on the transmitted signal.
- To evaluate the impact of noise on communication signals.
- To compare different modulation techniques in terms of power efficiency and bandwidth usage.
Signal Generation
- Audio Signal & Carrier Signal are generated using Simulink signal generators.
- Signal GenerationAudio Signal & Carrier Signal are generated using Simulink signal generators.
Modulation Process
- Full AM: Transmits carrier signal, upper, and lower sidebands.
- DSBSC: Suppresses the carrier and transmits only sidebands.
- SSB: Transmits only one sideband to save bandwidth.
- Modulation ProcessFull AM: Transmits carrier signal, upper, and lower sidebands.DSBSC: Suppresses the carrier and transmits only sidebands.SSB: Transmits only one sideband to save bandwidth.
Demodulation Process
- Uses coherent demodulation techniques.
- An analog filter removes unnecessary high-frequency components.
- Demodulation ProcessUses coherent demodulation techniques.An analog filter removes unnecessary high-frequency components.
SNR Testing
- Noise is introduced using AWGN (Additive White Gaussian Noise).
- Different SNR levels (5dB, 12dB, 23dB) are tested to measure signal quality.
- SNR TestingNoise is introduced using AWGN (Additive White Gaussian Noise).Different SNR levels (5dB, 12dB, 23dB) are tested to measure signal quality.
Power Spectrum Analysis
- Spectrum analyzers visualize carrier, sidebands, and noise impact.
- Power Spectrum AnalysisSpectrum analyzers visualize carrier, sidebands, and noise impact.
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Final-year Computer Engineering student at APU with a focus on software development and robotics.
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