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    The Worst-Case DFT Filter Bank Design with Sub-channel Variations

    Access Status
    Fulltext not available
    Authors
    Jiang, L.
    Wu, Changzhi
    Wang, Xiangyu
    Teo, Kok Lay
    Date
    2015
    Type
    Book Chapter
    
    Metadata
    Show full item record
    Citation
    Jiang, L. and Wu, C. and Wang, X. and Teo, K. 2015. The Worst-Case DFT Filter Bank Design with Sub-channel Variations, in Xu, H. and Wang, S. and Wu, S. (ed), Optimization Methods, Theory and Applications, pp. 183-205. London, Springer.
    Source Title
    Optimization Methods, Theory and Applications
    Source Conference
    The 9th International Conference on Optimization: Techniques and Applications (ICOTA9)
    Additional URLs
    http://link.springer.com/chapter/10.1007/978-3-662-47044-2_10#page-1
    ISBN
    9783662470435
    School
    Department of Construction Management
    URI
    http://hdl.handle.net/20.500.11937/36573
    Collection
    • Curtin Research Publications
    Abstract

    In this paper, we consider an optimal design of a DFT filter bank subject to subchannel variation constraints. The design problem is formulated as a minimax optimization problem. By exploiting the properties of this minimax optimization problem, we show that it is equivalent to a semi-infinite optimization problem in which the continuous inequality constraints are only with respect to frequency. Then, a computational scheme is developed to solve such a semi-infinite optimization problem. Simulation results show that, for a fixed distortion level, the aliasing level between different subbands is significantly reduced, in some cases up to 28 dB, when compared with that obtained by the bi-iterative optimization method without consideration of the subchannel variations.

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