학술논문

A MIMO Detector With Deep-Neural-Network for Faster-Than-Nyquist Optical Wireless Communications
Document Type
Periodical
Source
IEEE Photonics Journal IEEE Photonics J. Photonics Journal, IEEE. 16(2):1-9 Apr, 2024
Subject
Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
MIMO communication
Symbols
Signal detection
Vectors
Wireless communication
Optical filters
Detectors
Deep neural network
faster-than-nyquist
multiple input multiple output
optical wireless communication
Language
ISSN
1943-0655
1943-0647
Abstract
Conventional multiple input multiple output (MIMO) detection algorithms face challenges related to computational complexity and limited performance when handling high-dimensional inputs and complex channel conditions. In order to enhance signal recovery accuracy in atmospheric turbulence channels for faster-than-Nyquist (FTN) optical wireless communication (OWC) systems, a deep learning (DL) based MIMO detector is proposed. By leveraging a deep neural network (DNN), it becomes possible to learn nonlinear mappings within MIMO systems, resulting in improved detection performance while reducing computational overheads. Simulation results validate that our proposed DNN detector achieves comparable performance to the maximum likelihood (ML) method, while reducing complexity by 40%.