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      • Department of Electrical and Electronics Engineering
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      Sub-band equalization of modulated wideband converter for improved dynamic range performance

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      Author(s)
      Korucu, A. B.
      Alp, Y. K.
      Gök, Gökhan
      Arıkan, Orhan
      Date
      2017
      Source Title
      Proceedings of the IEEE 25th Signal Processing and Communications Applications Conference, SIU 2017
      Publisher
      IEEE
      Language
      Turkish
      Type
      Conference Paper
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      Abstract
      In this work, we propose a new method to improve the dynamic range performance of the Modulated Wideband Converter (MWC), which is multi-channel sampling system for digitizing wideband sparse signals below the Nyquist limit without loss of information by using compressive sensing techniques. MWC achieves high dynamic range assuming that subband frequency responses of the system are identical. However, in hardware implementations of MWC, the resulting sub-band frequency responses are not identical and dynamic range performance of the system drops significantly which makes it unusable in practical applications. Proposed method iteratively designs FIR filters for equalizing frequency responses of the all sub-bands. Obtained results from the extensive computer simulations of the MWC system show that proposed method improves the dynamic range performance of the MWC system significantly.
      Keywords
      Band equalization FIR filter
      Compressive sensing
      MWC
      Sparse
      Sub-Nyquist sampling
      Frequency response
      Iterative methods
      Signal reconstruction
      Hardware implementations
      Modulated wideband converters
      Permalink
      http://hdl.handle.net/11693/37589
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/SIU.2017.7960538
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      • Department of Electrical and Electronics Engineering 3702
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