کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6960385 1451970 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biorthogonal exponentially modulated filter bank
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Biorthogonal exponentially modulated filter bank
چکیده انگلیسی
This paper explores modulated filter banks (MFBs) utilizing polyphase domain analysis. The MFB theory offers a variety of configuration alternatives and to narrow down the diversity our emphasis is on critically sampled perfect reconstruction systems in odd-stacked configuration. Into this MFB subclass, we introduce biorthogonal exponentially modulated filter bank (EMFB). The biorthogonal EMFB is suitable for subband processing of complex-valued signals and the analysis-synthesis reconstruction delay is an adjustable parameter. The EMFB is represented with its polyphase components and we develop a unified framework for analyzing different classes of complex-valued filter banks, covering perfect reconstruction conditions and metrics for residual distortion effects. In addition, it is shown how the EMFB can be converted into even-stacked configuration through frequency shifting. This provides a link with the modified discrete Fourier transform filter bank, but even-stacked EMFB solves the subsignal handling in a simplified manner.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 97, April 2014, Pages 195-206
نویسندگان
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