Reduction of Intercarrier Interference in Ofdm Systems
نویسنده
چکیده
Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for the broadband wireless communication system. However, a special problem in OFDM is its vulnerability to frequency offset errors due to which the orthogonality is destroyed that result in Intercarrier Interference (ICI). ICI causes power leakage among subcarriers thus degrading the system performance. This paper will investigate the effectiveness of MaximumLikelihood Estimation (MLE), Extended Kalman Filtering (EKF) and Self-Cancellation (SC) technique for mitigation of ICI in OFDM systems. Numerical simulations of the ICI mitigation schemes will be performed and their performance will be evaluated and compared in terms of bit error rate (BER), bandwidth efficiency and computational complexity.
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تاریخ انتشار 2011