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An optimized transmultiplexer using combinational window functions

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Abstract

This paper proposes an efficient approach for the design of M-channel maximally decimated near-perfect reconstruction (NPR) type transmultiplexer. Cosine modulation is used to design the synthesis and analysis sections of the transmultiplexer. The prototype filter is designed by using high sidelobe falloff rate (SLFOR) combinational window functions. A bisection-type optimization algorithm has been applied to minimize the interference parameters like inter-channel interference (ICI) and inter-symbol interference (ISI). The proposed algorithm has certain advantages than earlier reported work. The algorithm is of generalized nature, independent of the window function used in the design of the prototype filter. Second, it is fast and computationally efficient as only a single parameter is used as a variable which provides almost uniform interference level in all subchannels. Design examples are included for comparison with earlier reported work. Very small values of ICI and ISI have been obtained by using variable and combinational window functions.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Samrat Ashok Technological Institute (Polytechnic), Vidisha, India

    Ram Kumar Soni

  2. Department of Electronics and Instrumentation Engineering, Samrat Ashok Technological Institute, Vidisha, India

    Alok Jain

  3. Department of Electronics and Communication Engineering, Jaypee Institute of Engineering and Technology, Raghogarh, Guna, India

    Rajiv Saxena

Authors
  1. Ram Kumar Soni
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  2. Alok Jain
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  3. Rajiv Saxena
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Correspondence to Ram Kumar Soni.

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Soni, R.K., Jain, A. & Saxena, R. An optimized transmultiplexer using combinational window functions. SIViP 5, 389–397 (2011). https://doi.org/10.1007/s11760-010-0162-z

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  • DOI: https://doi.org/10.1007/s11760-010-0162-z

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