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BPSK Message Transmission & Visualization

📑 5 slides 👁 18 views 📅 4/5/2026
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Title Slide

BPSK Message Transmission & Visualization

Title Slide
2

System Overview

  • MATLAB simulation of BPSK system
  • Frame structure: Guard + Preamble + Message
  • Steps: Create message, Convert to bits → BPSK modulation, Transmit frame (IQMessage), Receiver synchronization, Decode message
System Overview
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Frame Structure Diagram

  • Guard: Protects against transients
  • Preamble: Barker code, for synchronization
  • Message: Actual BPSK data
Frame Structure Diagram
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IQ Message Visualization

  • Plot of I (real) and Q (imag) components
  • MATLAB Figure: plot(real(IQMessage)) / plot(imag(IQMessage))
  • I-axis shows ±1 BPSK symbols, Q-axis ≈ 0
IQ Message Visualization
5

BPSK Constellation

  • Scatter plot of message symbols at -1 and +1
  • MATLAB Figure: scatter(real(BPSKdata), imag(BPSKdata))
  • Optional: dense points using repeated message for visibility
BPSK Constellation
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