AM Modulation with Noise
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In communication systems, amplitude modulation (AM) demodulation is a common modulation technique. However, when signals are corrupted by AM with added noise, the demodulation process becomes significantly more complex. In such scenarios, additional measures are required to ensure demodulation accuracy. Implementation approaches may include: using a preamplifier circuit to improve the signal-to-noise ratio (SNR) through hardware amplification; employing digital signal processing (DSP) techniques such as Fourier transform-based filtering or wavelet denoising algorithms to eliminate noise components; utilizing adaptive filter structures (e.g., LMS or RLS algorithms) that dynamically adjust filter coefficients to minimize signal distortion; and implementing multi-channel demodulation techniques where parallel processing across frequency bands enhances signal reliability through diversity combining.
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