A Novel Approach to Improve the Frequency Resolution Based on Sparse Representation

摘要：

　　How to improve the frequency resolution,especially in the low frequency bands,is n important problem for many applications.A novel approach based on sparse representation was proposed for this problem.in this work,we first diseussed the design of the over-completed dictionary with the high frequency resolution,and then Matching Pursuit was advised to perform sparse decomposition using Matching Pursuit Tool Kit.Next,the frequency information was extracted from the code book of the results of Matching Pursuit.Finally,the experiments demonstrated the improvement of the frequency resolution for the proposed approach.

关键词： Fast Fourier Transform Matching Pursuit sparse represantion frequency resolution MPTK

作者: Wenming Gui Ruifan Liu Guangyi Bai Xi Shao Wenming Gui Guangyi Bai

作者单位: School of Computer Science and Technology Nanjing University of Science and Technology Nanjing 21009 School of communication Nanjing University of Posts and Telecommunications Nanjing 210003, China Nanjing University of Finance and Economics Nanjing 210046,China Noah Solution(Suzhou)Co.Ltd.Suzhou 215021, China

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Computer and Information Applications(ICCIA2012)(2012第二届计算机和信息应用国际会议)

会议地点: 太原

会议语种:英文

页码: 566-569

在线出版日期: 2012-12-08（万方平台首次上网日期，不代表论文的发表时间）