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Improved SNR estimation algorithm in OFDM system
Author(s): 
Pages: 19-22
Year: Issue:  7
Journal: Video Engineering

Keyword:  wireless communicationSNR estimationnoise estimationLMMSE channel estimation;
Abstract: In OFDM systems,The SNR serves as a standard measure of signal quality.In this paper,we researched the SNR estimation based LMMSE channel estimation.In order to deal with the shortcomings of high complexity and biased SNR for traditional method,we present a new modified SNR estimation which is unbiased,and iteration throw last OFDM and this OFDM symbols can get good performance.The simulation shows estimation accuracy of the proposed method is improved about 2dB in high SNR,and also can promote the BER 0.3dB.
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