A study of BER performance of OFDM modulation in mobile communications - dependence on delay profile

摘要

This report discusses BER performance of OFDM dependent on delay profile in mobile radio channel by computer simulation. The BER performance, while a mobile station is moving, has higher relation to the in-band amplitude-frequency characteristics than that of fading depth, when the level is high. Similar BER performances have obtained in case of BPSK, QPSK and 16QAM. The BER behaves as performance between in static and in Rayleigh fading channels, when received the waves within a half-clock period excess delay, of which amplitude is -20 dB less than the first arriving wave. Further, one appears as performance from in the fading channel to in terribly degraded channel with increasing excess delay.