Networked Optical Massive MIMO Communications

Chen Sun

doi:10.1109/TWC.2020.2994545

Return

Networked Optical Massive MIMO Communications

2020-08-01

PRE

DOI：10.1109/TWC.2020.2994545

Original

Original request for help

Save

Abstract

En 中文

The low cost and versatility of optical devices make it possible to pack a large number of optical transceivers into arrays and exploit massive multiple-input multiple-output (MIMO) transmission in optical wireless communications. Nevertheless, optical massive MIMO presents several distinct challenges such as, the line-of-sight propagation and intensity modulation, incompatible with existing radio frequency massive MIMO techniques. This paper presents a networked optical massive MIMO system that consists of multiple base stations (BSs), each equipped with a transmit lens and an optical transmitter array, cooperatively serving a number of user terminals (UTs), each equipped with a receive lens and a photodetector array. We establish the optical massive MIMO channel model, analyze its asymptotic behavior, and evaluate the potential of networked optical massive MIMO on system throughput improvement. To achieve high throughput, we propose optical beam division multiple access (BDMA) transmission schemes under the total and per transmitter power constraints with the asymptotic optimality. Our results show that the system sum rate increases proportionally to the number of BSs and UTs using the optical BDMA transmission. Further numerical results show that the proposed optical massive MIMO system along with the optical BDMA transmission is able to achieve high throughput with low complexity.

Keywords:

Optical transmitters

Light emitting diodes

Lenses

Optical refraction

MIMO communication

Optical fiber networks

Optical receivers

Networked optical massive MIMO communication

transmit and receive lenses

beam division multiple access (BDMA) transmission

AI Summary

Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.