Explore MATLAB source code curated for "信噪比" with clean implementations, documentation, and examples.
Impact of white noise on COFDM transmission, analyzing Bit Error Rate (BER) variation across Signal-to-Noise Ratio (SNR) ranges from 0 to 20 dB using BPSK/QPSK/16PSK modulation schemes with code implementation insights.
Implementation and visualization of SNR and BER calculations for 16APSK communication systems with code-based mathematical modeling and graphical representation
Estimating the frequency of a sinusoidal signal contaminated with additive white Gaussian noise via FFT involves computing the Fourier transform of x(n) to obtain the spectrum, identifying the frequency corresponding to the maximum magnitude, and calculating the mean squared error over multiple iterations. By varying the signal-to-noise ratio (SNR), simulations demonstrate that the mean squared error decreases as SNR increases, highlighting the method's robustness in noisy environments.
Implementation of OFDM channel estimation using Combs Pilots, calculating bit error rate performance curves across varying SNR conditions with graphical visualization
Speech enhancement algorithms including spectral subtraction, wavelet transform, and mathematical morphology methods, with comparative analysis of signal-to-noise ratio (SNR), spectrogram performance, and denoising effectiveness, discussing algorithm selection and parameter optimization strategies
Generate a random quaternary signal, perform QAM modulation, transmit through an additive white Gaussian noise (AWGN) channel by adding white noise to the modulated signal using addition operation, simulate the impact of AWGN channel on signal transmission, demodulate the received signal at the receiver end, compare with the original signal to calculate bit error rate (BER). Vary the noise power to plot signal-to-noise ratio (SNR) versus BER curve, and compare performance curves with classmates to evaluate the advantages and disadvantages of different modulation schemes.
Performance analysis of uniform circular array MUSIC algorithm for signal elevation angle estimation under different SNR conditions, evaluated using root mean square error; implementation utilizes spectral peak search to locate maximum value coordinates with code demonstrations of signal processing workflow.
MATLAB source code implementation for SNR estimation in OFDM communication systems
MATLAB program for signal-to-noise ratio calculation, designed to analyze signal purity with beginner-friendly implementation featuring clear functions like SNR computation using power ratio methods and waveform visualization tools.
Implementation of SC decoding algorithm for polar codes supporting configurable signal-to-noise ratios and code lengths, with extensibility to SCL and CA-SCL algorithms. The core computational components are written in C for maximum efficiency, while the main framework utilizes MATLAB for flexible system integration, achieving significant acceleration in processing speed through hybrid programming architecture.