Low-Complexity Equalization of MIMO-OSDM
Abstract
Orthogonal signal-division multiplexing (OSDM) is an attractive alternative to conventional orthogonal frequency-division multiplexing (OFDM) due to its enhanced ability in peak-to-average power ratio (PAPR) reduction. Combining OSDM with multiple-input multiple-output (MIMO) signaling has the potential to achieve high spectral and power efficiency. However, a direct channel equalization in this case incurs a cubic complexity, which may be expensive for practical use. To solve the problem, low-complexity per-vector and block equalization algorithms of MIMO-OSDM are proposed in this paper for time-invariant and time-varying channels, respectively. By exploiting the channel matrix structures, these algorithms have only a linear complexity in the transformed domain. Simulation results demonstrate their validity and the related performance comparisons.
Keywords
Cite
@article{arxiv.1906.10848,
title = {Low-Complexity Equalization of MIMO-OSDM},
author = {Jing Han and Shengqian Ma and Yujie Wang and Geert Leus},
journal= {arXiv preprint arXiv:1906.10848},
year = {2019}
}
Comments
Submitted to IEEE Transactions on Vehicular Technology