Single Carrier Ofdm Immune to Intercarrier Interference
Orthogonal Frequency Division Multiplexing (OFDM) is an ideal candidate for next generation wireless communication systems. In OFDM the frequency offset distort the orthogonality between the subcarriers resulting Inter-Carrier Interference (ICI). SC-OFDM suffers significant performance degradation resulting from Inter-Carrier Interference (ICI) in high mobility environments. In this paper, the effect of ICI on an SC-OFDM system is analyzed and proposes a novel modulation scheme. The proposed Magnitude-Keyed Modulation (MKM) modulation provides SC-OFDM system immunity to ICI and with an easy implementation it significantly outperforms OFDM, SC-OFDM and MC-CDMA systems with Phase Shift Keying (PSK) modulation and Quadrature Amplitude Modulation (QAM) in severe ICI environment.