ICI Mitigation in OFDM System Using Negative Peak Augmented Raised Cosine Power Pulse

Orthogonal frequency division multiplexing (OFDM) is a digital modulation technique generally which is utilized in modern wireless applications to support high data rates. The carrier frequency offset (CFO), which models the frequency discrepancy between the transmitter and receiver oscillators, gives rise to inter carrier interference (ICI), along with destroying the orthogonality between the OFDM subcarriers. Thus the alleviation of an ICI power is extremely important in an OFDM system. Pulse shaping functions is a standout amongst the most generally utilized solutions with the end goal of lessening the ICI power. In this paper, an Adaptive pulse shaping filter based on the concept of Negative Peak Augmentation is proposed to mitigate the ICI and to enhance the performance of the OFDM system. The simulation results demonstrate the impact of the proposed pulse shaping function and performance investigation in terms of SIR, SNR and BER is carried out to show the superiority of the proposed pulse shaping function.