Simulation and performance analysis of OFDM system

OFDM is the key technology of 4G mobile communication system.First,the basic principle of OFDM was introduced.Then,the influences of different CP,modulation modes and oversampling on the system performance is emphatically analyzed respectively under the condition of ideal synchronization.Computer simulations were conducted with the proposed OFDM system.Finally,the BER curves against these factors were given and compared.