Classification of MIMO Equalizers
Wing Chau Ng, Chuandong Li
TL;DR
This paper classifies linear MIMO equalizers in optical coherent communications based on a simplified DSP channel model, introducing a new categorization and static inverse parameters for calibration.
Contribution
It provides a novel classification scheme for MIMO equalizers and introduces static inverse parameters for monitoring and calibration.
Findings
Categorized MIMO equalizers into four classes based on reference locations.
Represented the entire channel inverse using a complex conjugate-dependent system.
Proposed static channel inverse parameters for device and channel calibration.
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.
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Taxonomy
TopicsOptical Network Technologies · Advanced Photonic Communication Systems · Photonic and Optical Devices