Frequency-domain Decoupling for MIMO-GFDM Spatial Multiplexing

Ching-Lun Tai; Borching Su; Cai Jia

ICASSP 2019accepted0 citations

Frequency-domain Decoupling for MIMO-GFDM Spatial Multiplexing

Abstract

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

BibTeX

@inproceedings{icassp2019_frequencydomaind,
  title = {Frequency-domain Decoupling for MIMO-GFDM Spatial Multiplexing},
  author = {Ching-Lun Tai and Borching Su and Cai Jia},
  booktitle = {ICASSP 2019},
  year = {2019}
}