Analysis of orthogonal frequency division multiplexing (OFDM) technology in wireless communication process

摘要

The rapid development of wireless communication technologye provide users with more convenience but also accompanied serious interference problem in wireless communication. Resolution of interference problem become much important for communication process. Improvement of transmission performance can be reached with technology orthogonal frequency division multiplexing (OFDM). Loading transmission in signal is realized with FFT and IFFT technology in MATLAB. Orthogonal subcarriers ensure signal transmission without distortion. Simulation results show that string and conversion reduce multi-path effect, inter-symbol interference (ISI) decreased with extending symbol period, achieved efficient and reliable transmission of information signals in wireless communication channel.