MC-CDMA Performance Simulation in MATLAB

This document provides a comprehensive guide for implementing MC-CDMA (Multi-Carrier Code Division Multiple Access) performance simulations in MATLAB. MC-CDMA is a widely adopted multi-carrier communication technique in wireless systems that combines OFDM principles with CDMA spreading. The simulation enables quantitative evaluation of system performance under various conditions including signal-to-noise ratio (SNR) variations, spreading code lengths, and different numbers of active users. Key implementation aspects covered include: - Generation of orthogonal spreading codes using Walsh-Hadamard sequences - OFDM modulation/demodulation through FFT/IFFT operations - AWGN channel modeling with customizable SNR levels - Multi-user interference analysis and BER calculation The simulation utilizes MATLAB's built-in functions for signal processing (fft, ifft), communication system modeling (awgn, berawgn), and matrix operations for efficient parallel processing. Through systematic parameter testing, researchers can optimize system configurations such as codebook selection, power allocation, and receiver structures to enhance overall system capacity and reliability. The implementation follows a modular approach with separate functions for signal generation, channel encoding, modulation, channel effects, and performance metrics calculation, allowing for easy customization and extension to different MC-CDMA variants.