Simulation and Performance Analysis of Communication System Based on OFDM

In order to study the performance of Orthogonal Frequency Division Multiplexing (OFDM) communication system, this article establishes two communication system models of OFDM, which are simulated with MATLAB. Based on this, simulation curves of OFDM performance on different channel models and channel estimation algorithms are obtained and analyzed. It is obvious that among four kinds of European Cooperation in the Field of Scientific and Technical Research Rural 207 channel models, also known as Rural Area (RA), Bad Urban (BU), Typical Urban (TU) and Hilly Terrain (HT), the HT model is the most sensitive to Doppler frequency shift, and the TU model is the least. Simplification of Singular Value Decomposition (SVD) algorithm for the system is only suitable for the low SNR condition. The article offers a reference that the overall performance of the system is improved by correctly and quickly choosing suitable channel estimation algorithm on different channels.