FBMC-OQAM in Doubly-Selective Channels: A New Perspective on MMSE Equalization

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Authors Ronald Nissel, Markus Rupp, and Roman Marsalek
Journal/Conference Name 2017 IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Paper Category
Paper Abstract In many practical cases, one-tap equalizers achieve a close to optimum performance in filter bank multi-carrier modulation systems. However, if the channel is highly doubly-selective, that is, time-selective and frequency-selective, enhanced equalization methods might be necessary. In this paper, we generalize the n-tap Minimum Mean Squared Error (MMSE) equalization, proposed in literature, by also including neighboring subcarriers into the equalization process. As a reference, we also derive a full block MMSE equalizer and compare to a low-complexity interference cancellation scheme. Our investigation starts with a single-antenna system and is later extended to multiple antennas.
Date of publication 2017
Code Programming Language MATLAB
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