OFDM Communication System Simulation with MATLAB Implementation

Simulation of OFDM Communication Systems. This PDF file includes OFDM principles, program implementation details, and simulation performance results.

OFDM (Orthogonal Frequency Division Multiplexing) is a modulation technique widely used in modern communication systems. It enhances transmission efficiency and interference resistance by dividing high-speed data streams into multiple low-speed subcarriers for information transmission. OFDM technology is extensively applied in wireless communication fields including Wi-Fi, 4G, and 5G networks.

In this simulation, we utilize MATLAB software to model an OFDM communication system. The implementation involves key MATLAB functions such as fft/ifft for orthogonal modulation, constellation mapping (QPSK/16-QAM), cyclic prefix insertion, and channel modeling. We first provide a comprehensive explanation of OFDM working principles and mathematical foundations. Then, we present detailed code walkthroughs demonstrating how to implement core OFDM components: serial-to-parallel conversion, IFFT processing for multicarrier modulation, cyclic prefix addition for mitigating inter-symbol interference, and demodulation using FFT operations.

The simulation results include spectral analysis plots showing orthogonal subcarrier characteristics and Bit Error Rate (BER) performance curves under different channel conditions (AWGN, multipath fading). The MATLAB code implements practical algorithms for signal generation, channel equalization, and error rate calculation using Monte Carlo simulation methods.

Through this simulation exercise, you will gain in-depth understanding of OFDM system operations and learn practical MATLAB implementation techniques for communication system simulation. This knowledge will help you better comprehend and apply OFDM technology in real-world applications.

Please refer to the attached PDF file for detailed information and complete simulation results. For any technical questions regarding the MATLAB implementation or OFDM algorithms, please feel free to contact us.

Thank you!