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arXiv · 1803.06448

Frequency-Domain Decoupling for MIMO-GFDM Spatial Multiplexing

Ching-Lun Tai·Borching Su·Cai Jia
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Abstract

Generalized frequency division multiplexing (GFDM) is considered a non-orthogonal waveform and known to encounter difficulties when using in the spatial multiplexing mode of multiple-input-multiple-output (MIMO) scenario. In this paper, a class of GFDM prototype filters, under which the GFDM system is free from inter-subcarrier interference, is investigated, enabling frequency-domain decoupling in the processing at the GFDM receiver. An efficient MIMO-GFDM detection method based on depth-first sphere decoding is then proposed with such class of filters. Numerical results confirm a significant reduction in complexity, especially when the number of subcarriers is large, compared with existing methods presented in recent years.

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Ching-Lun Tai, Borching Su, Cai Jia. 2018-03-17. Frequency-Domain Decoupling for MIMO-GFDM Spatial Multiplexing. https://arxiv.org/abs/1803.06448

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