MATLAB Simulation of QPSK Transmission over Rayleigh Channel
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This MATLAB simulation demonstrates QPSK signal transmission over a Rayleigh fading channel, verifying successful communication capabilities. The implementation includes key components: QPSK modulation using phase shifts of 0°, 90°, 180°, and 270°; Rayleigh channel modeling with random amplitude fading and phase distortion; and coherent demodulation with maximum likelihood detection. The simulation structure typically involves generating random binary data, mapping to QPSK symbols, applying Rayleigh fading using complex Gaussian random variables, adding AWGN noise, and implementing error rate calculation through symbol decision and comparison. Performance metrics like BER (Bit Error Rate) versus Eb/N0 are analyzed to validate system robustness under fading conditions.
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