Improved channel estimation based on adaptive SVM for NC-OFDM systems

作     者：贾敏 顾学迈 吴群 JIA Min;GU Xue-mai;WU Qun

作者机构：Communication Research CenterHarbin Institute of Technology School of AstronauticsHarbin Institute of Technology 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2012年第19卷第5期

页      面：67-72页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 081001[工学-通信与信息系统] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Sponsored by the National Natural Science Foundation of China( Grant No. 61201143) the Fundamental Research Funds for the Central Universities( Grant No. HIT. NSRIF. 2010091) the National Science Foundation for Post-doctoral Scientisis of China( Grant No. 2012M510956) the Post-doctoral Funds of Heilongjiang Province( Grant No. LBHZ11128) 

主　　题：CR SVM channel estimation 

摘      要：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.