OFDM is the expected performance for 4th Generation broadband multimedia wireless systems. OFDM is robust to multi-paths fading and delay because it has high data transmission capability with high bandwidth efficiency that’s why it has recently been applied in wireless communication systems. the causes of loss of orthogonality and amplitude reduction of OFDM signal and lead to Inter Carrier Interference (ICI) is due to OFDM system is very sensitive to carrier frequency offset, which is one of the major drawback of OFDM system. We can reduceICI by using various techniques. Here in this paper ICI self cancellation method is used to combat the effect of ICI induced by CFO. Sub-optimal scheme can be applied for the any range of and a sub optimum value can be ( λ so , μ so ) calculated using proposed sub-optimalscheme. The CIR of SSR ICI self cancellation scheme using the proposed sub-optimal approach is also found to be better than conventional SSR ICI self cancellation and compared with Rayleigh antenna.
[1]
B. Sathish Kumar,et al.
An Efficient Inter Carrier Interference Cancellation Schemes for OFDM Systems
,
2010,
ArXiv.
[2]
Carrson C. Fung,et al.
Frequency domain equalization for OFDM systems with insufficient guard interval using null subcarriers
,
2009,
2009 17th European Signal Processing Conference.
[3]
Ghassan Abdalla.
Orthogonal Frequency Division Multiplexing Theory and Challenges
,
2011
.
[4]
James R. Zeidler,et al.
Performance degradation of OFDM systems due to Doppler spreading
,
2006,
IEEE Transactions on Wireless Communications.