Low Complexity Equalization for Doubly Selective Channels Modeled by a Basis Expansion

@article{Hrycak2010LowCE,
  title={Low Complexity Equalization for Doubly Selective Channels Modeled by a Basis Expansion},
  author={Tomasz Hrycak and Saptarshi Das and Gerald Matz and Hans Georg Feichtinger},
  journal={IEEE Transactions on Signal Processing},
  year={2010},
  volume={58},
  pages={5706-5719}
}
We propose a novel equalization method for doubly selective wireless channels, whose taps are represented by an arbitrary Basis Expansion Model (BEM). We view such a channel in the time domain as a sum of product-convolution operators created from the basis functions and the BEM coefficients. Equivalently, a frequency-domain channel can be represented as a sum of convolution-products. The product-convolution representation provides a low-complexity, memory efficient way to apply the channel… 

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