Free-space optical communications using orbital-angular-momentum multiplexing combined with MIMO-based spatial multiplexing

Ren, Yongxiong; Wang, Zhe; Xie, Guodong; Li, Long; Cao, Yinwen; Liu, Cong; Liao, Peicheng; Yan, Yan; Ahmed, Nisar; Zhao, Zhe; Willner, A.E.; Ashrafi, Nima; Ashrafi, Solyman; Linquist, Roger D.; Bock, Robert; Tur, Moshe; Molisch, Andreas F.; Willner, Alan E.

doi:10.1364/ol.40.004210

Cited by 75 publications

(40 citation statements)

References 23 publications

(32 reference statements)

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“…Other techniques like the holographic ghost imaging system [401], adaptive optics [402], [403] help in controlling OAM crosstalk and thus are capable of providing high data rates even in adverse atmospheric conditions. In [404], 80 Gbps FSO link is experimentally demonstrated using OAM and MIMO-based spatial multiplexing. For the practical implementation of OAM-based FSO multiplexed system, various design considerations such as beam size, receiver aperture size, mode space of OAM beams for given lateral displacements are analyzed in [405].…”

Section: (29)mentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,267

721

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Abstract-In recent years, free space optical (FSO) communication has gained significant importance owing to its unique features: large bandwidth, license free spectrum, high data rate, easy and quick deployability, less power and low mass requirements. FSO communication uses optical carrier in the near infrared (IR) band to establish either terrestrial links within the Earth's atmosphere or inter-satellite/deep space links or ground-to-satellite/satellite-to-ground links. It also finds its applications in remote sensing, radio astronomy, military, disaster recovery, last mile access, backhaul for wireless cellular networks and many more. However, despite of great potential of FSO communication, its performance is limited by the adverse effects (viz., absorption, scattering and turbulence) of the atmospheric channel. Out of these three effects, the atmospheric turbulence is a major challenge that may lead to serious degradation in the bit error rate (BER) performance of the system and make the communication link infeasible. This paper presents a comprehensive survey on various challenges faced by FSO communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. It also provide details of various performance mitigation techniques in order to have high link availability and reliability. The first part of the paper will focus on various types of impairments that pose a serious challenge to the performance of optical communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. The latter part of the paper will provide the reader with an exhaustive review of various techniques both at physical layer as well as at the other layers (link, network or transport layer) to combat the adverse effects of the atmosphere. It also uniquely presents a recently developed technique using orbital angular momentum for utilizing the high capacity advantage of optical carrier in case of space-based and near-Earth optical communication links. This survey provides the reader with comprehensive details on the use of space-based optical backhaul links in order to provide high capacity and low cost backhaul solutions.

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Section: (29)mentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,267

721

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“…At the receiving end, MIMO signal processing is employed to mitigate inter-channel interference [157]. Such a system architecture incorporating OAM multiplexing and MIMO technology can also be used for free-space optical communication links [158].…”

Section: Radio Oam Communicationsmentioning

confidence: 99%

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications

Chen

Zhou

Moretti

et al. 2020

IEEE Commun. Surv. Tutorials

249

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Orbital angular momentum (OAM) has aroused a widespread interest in many fields, especially in telecommunications due to its potential for unleashing new capacity in the severely congested spectrum of commercial communication systems. Beams carrying OAM have a helical phase front and a field strength with a singularity along the axial center, which can be used for information transmission, imaging and particle manipulation. The number of orthogonal OAM modes in a single beam is theoretically infinite and each mode is an element of a complete orthogonal basis that can be employed for multiplexing different signals, thus greatly improving the spectrum efficiency. In this paper, we comprehensively summarize and compare the methods for generation and detection of optical OAM, radio OAM and acoustic OAM. Then, we represent the applications and technical challenges of OAM in communications, including free-space optical communications, optical fiber communications, radio communications and acoustic communications. To complete our survey, we also discuss the state of art of particle manipulation and target imaging with OAM beams.

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“…It was later shown that multi-antenna techniques can be used to generate OAM through suitably structured antenna arrays [67,76]. However, it is also possible to use several spatially separated apertures, each of which contains multiple OAM beams to distribute the spatial degree of freedom, in an arrangement that could be interpreted as combining MA-SDM with OAM multiplexing [77]. It should be noted that a fixed volume that is available for placing transmitter or receiver apertures provides certain spatial degrees of freedom for both multiplexing techniques [78].…”

Section: (C) Orbital Angular Momentum-based Free-space Optical Links mentioning

confidence: 99%

Recent advances in high-capacity free-space optical and radio-frequency communications using orbital angular momentum multiplexing

Willner

Ren

Xie

et al. 2017

Phil. Trans. R. Soc. A.

Self Cite

161

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Free-space optical communications using orbital-angular-momentum multiplexing combined with MIMO-based spatial multiplexing

Cited by 75 publications

References 23 publications

Optical Communication in Space: Challenges and Mitigation Techniques

Optical Communication in Space: Challenges and Mitigation Techniques

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications

Recent advances in high-capacity free-space optical and radio-frequency communications using orbital angular momentum multiplexing

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