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IEICE TRANSACTIONS on Communications

Detection Algorithms for FBMC/OQAM Spatial Multiplexing Systems

Kuei-Chiang LAI, Chi-Jen CHEN

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Summary :

In this paper, we address the problem of detector design in severely frequency-selective channels for spatial multiplexing systems that adopt filter bank multicarrier based on offset quadrature amplitude modulation (FBMC/OQAM) as the communication waveforms. We consider decision feedback equalizers (DFEs) that use multiple feedback filters to jointly cancel the post-cursor components of inter-symbol interference, inter-antenna interference, and, in some configuration, inter-subchannel interference. By exploiting the special structures of the correlation matrix and the staggered property of the FBMC/OQAM signals, we obtain an efficient method of computing the DFE coefficients that requires a smaller number of multiplications than the linear equalizer (LE) and conventional DFE do. The simulation results show that the proposed detectors considerably outperform the LE and conventional DFE at moderate-to-high signal-to-noise ratios.

Publication
IEICE TRANSACTIONS on Communications Vol.E104-B No.9 pp.1172-1187
Publication Date
2021/09/01
Publicized
2021/03/22
Online ISSN
1745-1345
DOI
10.1587/transcom.2020EBP3165
Type of Manuscript
PAPER
Category
Wireless Communication Technologies

Authors

Kuei-Chiang LAI
  National Cheng Kung University
Chi-Jen CHEN
  the Realtek Semiconductor Corp.

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