Classification of MIMO Equalizers
Abstract
In this theoretical work, the DSP-perceived channel in optical coherent communications is first simplified, based on which we categorize linear MIMO equalizers into four classes according to their reference locations. The entire channel inverse can be represented by a complex conjugate-dependent system, coinciding with the widely linear equalization theory. Suboptimally removing FO dynamics, relatively static channel inverses parameterized with common device and channel parameters are presented for monitoring or calibration purposes.
Keywords
Cite
@article{arxiv.2106.00795,
title = {Classification of MIMO Equalizers},
author = {Wing Chau Ng and Chuandong Li},
journal= {arXiv preprint arXiv:2106.00795},
year = {2021}
}
Comments
This work was submitted to ECOC 2021. This theoretical paper also explains the principle of the experimental demonstration in Joint Transmitter and Receiver IQ Differential Phase Calibration using a single 4x8 MIMO Equalizer, Proc. Advanced Photonics Congress 2021 (SPPCom), SpTh1D.4