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On the Optimization of Oversampled DFT Filter Banks

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1 Author(s)
Mohamed F. Mansour ; Texas Instrum. Inc., Dallas, TX

We use the general formula of the synthesis window of the oversampled discrete Fourier transform filter bank in terms of the minimum-norm solution and the null space of the perfect reconstruction condition matrix to optimize the window design. We give closed-form solutions to different optimization criteria, e.g., minimum out-of-band power, minimum quantization-error, and minimum window order

Published in:

IEEE Signal Processing Letters  (Volume:14 ,  Issue: 6 )