Abstract:
Orthogonal Frequency Division Multiplexing
(OFDM) is a modern high data rate modulation technique for wireless communication
systems. Due to loss of orthogonality of subcarriers intercarrier interference
occurs. In this study the performance of the proposed time-domain equalization
technique is compared with the existing frequency domain equalization
technique. In frequency domain equalization a correlative polynomial is
used in the frequency domain to suppress the ICI. In Time domain equalization
technique, a window function is proposed in equivalent to the correlative
polynomial used in the frequency domain. MATLAB simulation of the proposed
technique shows that the time domain windowing scheme achieves better
performance in ICI suppression compared to the correlative coding technique.
Time domain windowing technique proposed in this study, offers better
Carrier to Interference Ratio (CIR) and BER is reduced compared to the
correlative coding method.
R. Kumar, S. Malarvizhi and S. Jayashri, 2008. Time-Domain Equalization Technique for Intercarrier Interference Suppression in OFDM Systems. Information Technology Journal, 7: 149-154.
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