Frequency-Domain Decoupling for MIMO-GFDM Spatial Multiplexing
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.
Cite
@article{arxiv.1803.06448,
title = {Frequency-Domain Decoupling for MIMO-GFDM Spatial Multiplexing},
author = {Ching-Lun Tai and Borching Su and Cai Jia},
journal= {arXiv preprint arXiv:1803.06448},
year = {2024}
}
Comments
4 pages, 4 figures. This work has been submitted to the IEEE for possible publication