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http://dx.doi.org/10.7840/kics.2014.39B.10.700

Noise Reduction by Using Eigenfilter in Cyclic Prefix System Based on SNR  

Kim, Jin-Goog (Agency for Defense Development)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.39B, no.10, 2014 , pp. 700-707 More about this Journal
Abstract
In this paper, we propose the noise reduction method by using the eigenfilter in cyclic prefix system based on SNR. To obtain the signal eigenvectors for the eigenfiltering, we propose a method of obtaining the autocorrelation matrix by exploiting the circulant property of the received block which results from the cyclic extension of the OFDM symbol. Since the structures of the transmitter and the receiver are not changed, the proposed method is easy to apply to the conventional OFDM system. To verify the proposed method, we evaluate the persistency of excitation (POE) criterion for the input and demonstrate the effectiveness of the proposed method in the simulation results.
Keywords
OFDM; Eigenfilter; Noise Reduction; Cyclic prefix system;
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Times Cited By KSCI : 3  (Citation Analysis)
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