Improved channel estimation based on adaptive SVM for NC-OFDM systems
JIA Min1,2, GU Xue-mai1, WU Qun2
1.Communication Research Center, Harbin Institute of Technology, Harbin 150001, China;2.School of Astronautics, Harbin Institute of Technology, Harbin 150001, China
Abstract:
Non-contiguous OFDM (NC-OFDM) system is popular as its characteristics of avoiding interference by spectrum sensing. The traditional channel estimation methods can not be applied to the NC-OFDM systems directly as its special scheme. The improved time-domain channel estimation method based on adaptive support vector machine (SVM) and signal to noise ratio (SNR) estimation is proposed for NC-OFDM systems in this paper. It adopts the spectrum sensing based on adaptive SVM at the receiver. The simulation results show that the mean square error (MSE) and bit error rate (BER) performance outperform than the conventional schemes under the same condition.
Key words: CR SVM channel estimation
DOI：10.11916/j.issn.1005-9113.2012.05.011
Clc Number:TN929.5
Fund:
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Improved channel estimation based on adaptive SVM for NC-OFDM systems
本站小编 哈尔滨工业大学/2019-10-23
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