Explore MATLAB source code curated for "信号产生" with clean implementations, documentation, and examples.
Communication Principles Experiment focusing on MATLAB simulation of digital baseband transmission systems, including signal generation, Gaussian white noise generation, R-filter and T-filter implementation, and complete communication system workflow with code-level implementation details.
Signal sequence generation and mapping onto frequency hopping channels. The system employs a Bernoulli random signal generator module to create random signals with a frame sampling rate of 10 and sampling time of 1.5e-6. Signals are preprocessed and mapped onto a 1600 hops/second frequency hopping pattern. The modulation scheme uses FH-CPM (Frequency Hopping-Continuous Phase Modulation), where the original signal undergoes CPM modulation to produce binary symbol sequences with a pulse length of 1. Simultaneously, the frequency hopping signal at 1600 hops/s is modulated using M-FSK, generating a hopping sequence ranging from -39MHz to 39MHz. These two sequences are multiplied to produce the output signal for transmission. The receiver utilizes an identical random frequency hopping sequence for demodulation, reversing the preprocessing steps through dedicated subsystems.