A study on symbol equalization method for OFDM using the estimated propagation path characteristics

Abstract

Under the mobile condition, the signal quality degrades seriously by frequency selective fading and Doppler shift, because under that condition, carriers in OFDM(Orthogonal Frequency Division Multiplex) can not be kept the orthogonality by these interferences. In this paper, we propose a symbol equalization method for synchronized demodulation with the propagation path characteristics estimated from complex delay profiles calculated from the received pilot signals.