Hierarchical adaptive equalizer and design method thereof
AssigneeChung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.
InventorsChien-Hsing Liao, Wei-Min Chang, Tai-Kuo Woo, Shih-Che Lin, Jyh-Horng Wen
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Abstract
A hierarchical adaptive equalizer and a design method thereof are disclosed. The design method divides N delay elements into a plurality of adaptive algorithms, each of the adaptive algorithms having β delay elements. The design method logically structures a hierarchical tree with the adaptive algorithms. The hierarchical tree comprises α levels. A top first level of the hierarchical tree comprises βα−1 adaptive algorithms. A top second level of the hierarchical tree comprises βα−2 adaptive algorithms. A bottom level of the hierarchical tree comprises an adaptive algorithm.
Claims23
A design method of a hierarchical adaptive equalizer, the design method comprising:
- providing N delay elements;
- dividing the N delay elements into a plurality of adaptive algorithms, each of the adaptive algorithms having β delay elements;
- and
- logically structuring a hierarchical tree with the adaptive algorithms, for increasing convergent rate of the adaptive algorithms and promoting accuracy of an output of the hierarchical adaptive equalizer, the hierarchical tree comprising comprises α levels, a top first level comprising βα−1 adaptive algorithms, a top second level comprising βα−2 adaptive algorithms, a bottom level comprising one adaptive algorithm, wherein each adaptive algorithm in each level of the hierarchical tree has β inputs obtained from division of the N delay elements, N, α and β are integers not less than 1, and N is not less than β.
A hierarchical adaptive equalizer, characterized in comprising a hierarchical tree for increasing convergent rate of adaptive algorithms and promoting accuracy of an output of the hierarchical adaptive equalizer, the hierarchical tree comprising α levels, a top first level of the hierarchical tree comprising βα−1 adaptive algorithms, a top second level comprising βα−2 adaptive algorithms, a bottom level comprising an adaptive algorithm, wherein β represents a number of delay elements as inputs for each of the adaptive algorithms in each level of the hierarchical tree, and α and β are integers not less than 1.
Dependencies are inferred from the claim text.