谢雪梅
主要研究多速率信号处理及应用。
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- 姓名:谢雪梅
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
- 职称:-
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学科领域:
制糖技术
- 研究兴趣:主要研究多速率信号处理及应用。
谢雪梅,博士,教授,1998-2003年在香港大学获得博士学位,2004年在香港大学做博士后研究。主要研究多速率信号处理及应用,现西安电子科技大学电子工程学院任教,现承担国家自然科学基金和国防预研基金等科研项目,为研究生和本科生开设《多速率信号处理》《数字信号处理II》的双语教学课程,在国际著名刊物发表科研论文20余篇,其中被SCI、EI检索论文20篇。发表有关教与学的教学改革论文一篇。
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谢雪梅
,-0001,():
-1年11月30日
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【期刊论文】A simple design method of linear-phase nonuniform Filter Banks with Integer Decimation Factors
谢雪梅
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-1年11月30日
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谢雪梅
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-1年11月30日
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【期刊论文】A new method for designing linear-phase recombination nonuniform filter-banks
谢雪梅
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-1年11月30日
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【期刊论文】Design of Linear-Phase Recombination Nonuniform Filter Banks
谢雪梅, X. M. Xie, S. C. Chan, Member, IEEE, and T. I. Yuk
IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL.54, NO.7, JULY 2006,-0001,():
-1年11月30日
This correspondence proposes a novel method for designing a class of recombination nonuniform filter banks (RNFBs)with the linearphase (LP)pr operty. In the structure of the proposed nonuniform filter bank (FB), certain channels of an-channel uniform FB are merged by synthesis filters of transmultiplexers (TMUXs), yielding nonuniform subbands. By a detailed analysis of the frequency characteristics of the RNFBs, we derive the existence and matching conditions that are necessary for constructing the proposed RNFBs having good frequency responses. With those conditions being satisfied, the design problem becomes that of a set of LP uniform FBs. By using the Parks–McClellan algorithm, we are able to design the near-perfect-reconstruction LP RNFBs in a very simple and efficient way as demonstrated by two examples.
Recombination nonuniform filter banks (, RNFBs), , linear phase (, LP), , near-perfect reconstruction, transmultiplexer (, TMUX),
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谢雪梅, X. M. Xie, S. C. Chan, and T. I. Yuk
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS-I: REGULAR PAPERS, VOL.52, NO.9, SEPTEMBER 2005,-0001,():
-1年11月30日
This paper studies the design of a class of perfect-reconstruction (PR) nonuniform filter banks (FBs) called recombination nonuniform FBs (RNFBs). They are constructed by merging subbands in a uniform FB with sets of transmultiplexers (TMUXs). It generalizes the RNFBs previously proposed by the authors to allow more general choice of the sampling factors. The spectral inversion and spurious response suppression problems of these new RNFBs using cosine modulation are analyzed, and a simple design method based on a matching condition is proposed. It is also found that the FB and the TMUX in the recombination structure can be designed separately to satisfy the matching condition. In addition, real-time adaptive merging of the channels to provide dynamic nonuniform frequency partitioning is feasible. Another advantage of the RNFBs is that the recombination and processing of the subband signal can be done at the decimated domain of the uniform FB, which greatly reduces its implementation complexity. Design examples show that high quality nonuniform PR FBs with low implementation complexity and variable time-frequency resolution can be obtained by the proposed method.
Cosine modulated filter banks (, CSFBs), , dynamic recombination, FBs, perfect reconstruction, rational sampling factors
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