Multi-path introduces amplitude ripples into OFDM transmission, and these ripples change the C/N of each carrier, leading to variations in the BER of each carrier. These variations degrade the BER of the entire OFDM and the equivalent C/N. In this paper, the relation between multi-path and the equivalent C/N degradation is studied, and some results of the relation between multi-path and the equivalent C/N degradation are showed.
