Spread Spectrum Communication System Simulation

This is my repository of frequently used function libraries for spread spectrum communication system simulations. These libraries comprise modular implementations for the following key functionalities:

- Signal Generation Functions: Generate various types of spread spectrum signals including sine waves, rectangular pulses, and PN sequences. Implementation typically involves parameter configuration for carrier frequency, chip rate, and modulation indices.

- Signal Modulation Functions: Perform modulation techniques on spread spectrum signals such as frequency hopping (FHSS), direct sequence spread spectrum (DSSS), and phase shift keying (PSK). Algorithms incorporate spreading code multiplication and carrier modulation operations.

- Signal Demodulation Functions: Demodulate received spread spectrum signals to recover original information. Key processes include correlation detection, matched filtering, and phase-locked loop (PLL) implementations for carrier synchronization.

- Channel Modeling Functions: Simulate transmission channels in spread spectrum systems including path loss models, additive white Gaussian noise (AWGN), and multipath fading scenarios. Configuration parameters allow for SNR adjustments and Doppler effect simulations.

- Bit Error Rate (BER) Calculation Functions: Evaluate system performance by computing error rates through Monte Carlo simulations and theoretical analysis. Functions typically include error counting algorithms and BER vs. Eb/N0 curve generation capabilities.

These well-documented libraries are designed to facilitate efficient development and testing of spread spectrum communication systems, providing standardized interfaces for seamless integration into larger simulation frameworks.