Performance Analysis of OFDM System Employing an Efficient Scheme of ICI Self- Cancellation
Ravi Prakash Yadav1, Ritesh Kumar Mishra2
1Ravi Prakash Yadav,  Department of ECE, National Institute of Technology, Patna, India.
2Ritesh Kumar Mishra,  Department of ECE, National Institute of Technology, Patna, India.
Manuscript received on March 22, 2014. | Revised Manuscript received on April 12, 2014. | Manuscript published on April 30, 2014. | PP: 344-347  | Volume-3, Issue-4, April 2014. | Retrieval Number:  D3031043414/2013©BEIESP

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Abstract: Orthogonal frequency division multiplexing (OFDM) is very sensitive to frequency offset caused by Doppler frequency drift or frequency drift between transmitter and receiver oscillator. This leads to a loss in the orthogonality between sub-carriers and results in inter-carrier-interference (ICI). In this paper we proposed an efficient ICI self-cancellation scheme to reduce ICI in OFDM system and its performance is compared with existing methods of self-cancellation in terms of carrier-to-interference ratio (CIR) and bit-error rate (BER). Simulation result shows that the proposed scheme outperforms the existing schemes.
Keywords: Inter-carrier-interference (ICI), OFDM, Self-cancellation (SC), Data-conjugate, Data-conversion.