ICI reduction\ber_call_qpsk.m .............\dongauss.m .............\doppler_rotated_signal.m .............\gen_qam_qpsk.m .............\hard_decision.m .............\ICI_conjugate_method.m .............\phase noise insertion.doc .............\QPSK_ber_conjugate_final.m .............\standard OFDM.m ICI reduction