MATLAB Implementation of OFDM with QAM Modulation

In this project, we will implement an OFDM (Orthogonal Frequency Division Multiplexing) system with QAM (Quadrature Amplitude Modulation) using MATLAB, supplemented with detailed technical annotations. OFDM is a multi-carrier modulation technique widely employed in wireless communications to achieve high-speed data transmission. QAM represents a modulation scheme that enables higher data throughput within limited bandwidth by varying both amplitude and phase of the carrier signal.

Our implementation will include key components such as: QAM symbol mapping using MATLAB's qammod function, serial-to-parallel conversion for subcarrier allocation, IFFT (Inverse Fast Fourier Transform) operation for OFDM symbol generation via ifft, cyclic prefix insertion to combat multipath interference, and parallel-to-serial conversion for transmission. The receiver chain will implement complementary operations including cyclic prefix removal, FFT processing using fft, channel equalization, and QAM demodulation with qamdemod.

The comprehensive annotations will clarify algorithm flow, explain mathematical operations, and document function parameters to facilitate understanding of OFDM-QAM implementation. This approach not only demonstrates the practical integration of these technologies but also serves as an educational foundation for future projects. Well-documented code promotes knowledge sharing and collaboration by making the functionality and implementation process accessible to other developers and researchers.