A New Approach to the Link Budget Concept for an OAM Communication Link

Cagliero, Andrea; Vita, Assunta De; Gaffoglio, Rossella; Sacco, B.

doi:10.1109/lawp.2015.2458352

Cited by 33 publications

(20 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…affecting the system capacity. The limit of the OAM RF link budget estimate reported in [253], was discussed by Cagliero et al; they provided a new approach to estimate the link budget [338]. The authors took into account the spatial structure of the beam which yielded a correct description of the OAM communication link considering uniform circular antenna arrays.…”

Section: Referencementioning

confidence: 99%

Communicating Using Spatial Mode Multiplexing: Potentials, Challenges, and Perspectives

Trichili

Park

Zghal

et al. 2019

IEEE Commun. Surv. Tutorials

191

View full text Add to dashboard Cite

Time, polarization, and wavelength multiplexing schemes have been used to satisfy the growing need of transmission capacity. Using space as a new dimension for communication systems has been recently suggested as a versatile technique to address future bandwidth issues. We review the potentials of harnessing the space as an additional degree of freedom for communication applications including free space optics, optical fiber installation, underwater wireless optical links, on-chip interconnects, data center indoor connections, radio frequency and acoustic communications. We focus on the orbital angular momentum (OAM) modes and equally identify the challenges related to each of the applications of spatial modes and the particular OAM modes in communication. We further discuss the perspectives of this emerging technology. Finally, we provide the open research directions and we discuss the practical deployment of OAM communication links for different applications. ). 4 in the future. We also summarize the open problems and the future research directions. A discussion of the practicability and cost of multi-OAM communication is also included. II. OAM POTENTIALS A. Free Space Optical CommunicationFSO is a license free wireless communication configuration that has recently received much interest for a variety of applications. FSO is an attractive solution for last mile connectivity problems, particularly for communication networks, when the installation of fiber optics is costly or not possible [66]. FSO can be also used to establish inter-building secure communication, and can be deployed as a backup to optical fibers. Wireless optical communication can guarantee a line-of-sight (LoS) high bit rate wireless transmission over long distances, up to several kilometers. Furthermore, FSO communication is considered as a promising technique to scale down bandwidth challenges in future 5G networks [67].Multiple wavelength FSO provides better transmission, as demonstrated in [68], [69]. Data can be mapped on advanced modulation formats to achieve high bit rates and high spectral efficiency levels [70]- [72]. Another option is multiple-input and multiple-output (MIMO) FSO communication in which multiple lasers are positioned to transmit Gaussian beams to multiple receiving apertures [73]. Over the last few years, it has been proven that it is possible to transmit information over spatially structured light beams [21], [74], [75] including OAM beams and plane waves. Our focus is on the OAM modes of light.The first PoC communication experiment incorporating OAMs in free space was carried out in 2004 by Gibson and co-workers [21]. Over a 15-meter long link, 8 -spaced values were chosen along the Gaussian beam as an alphabet for the communication. OAM beams were generated and detected using two light modulators. Since then, much progress has been made and free space transmission capacity of over 1 Tbit/s is, today, possible [76]- [78]. By performing three dimensional multiplexing, Huang and co-workers were able to attain a 100 Tbi...

show abstract

Section: Referencementioning

confidence: 99%

Communicating Using Spatial Mode Multiplexing: Potentials, Challenges, and Perspectives

Trichili

Park

Zghal

et al. 2019

IEEE Commun. Surv. Tutorials

191

View full text Add to dashboard Cite

show abstract

“…However, OAM multiplexing is attractive as a way to provide higher-rate transmission in an LOS channel environment without the need for complex signal processing such as channel diagonalization. Studies regarding OAM multiplexing in the wireless communication field are categorized into antenna design and beam generation [34]- [38], proof of concept experiments [15], [16], [35], signal processing method [39]- [41], and system study such as capacity analysis and link budget [42]- [44].…”

Section: Related Work In Oam Multiplexingmentioning

confidence: 99%

“…Mohammadi et al investigated a system level performance [43]. The link budget was analyzed in [44] while clarifying the mode dependency of the propagation loss. In addition to the above cited work, many other important studies have been done and are still ongoing, such as studies on calibration methods [45], analysis of the effects of multipaths [46] and so on [47], [48].…”

Section: Related Work In Oam Multiplexingmentioning

confidence: 99%

Orbital Angular Momentum (OAM) Multiplexing: An Enabler of a New Era of Wireless Communications

Lee

Sasaki

Fukumoto

et al. 2017

IEICE Trans. Commun.

View full text Add to dashboard Cite

SUMMARY This paper explores the potential of orbital angular momentum (OAM) multiplexing as a means to enable high-speed wireless transmission. OAM is a physical property of electro-magnetic waves that are characterized by a helical phase front in the propagation direction. Since the characteristic can be used to create multiple orthogonal channels, wireless transmission using OAM can enhance the wireless transmission rate. Comparisons with other wireless transmission technologies clarify that OAM multiplexing is particularly promising for point-to-point wireless transmission. We also clarify three major issues in OAM multiplexing: beam divergence, mode-dependent performance degradation, and reception (Rx) signal-to-noise-ratio (SNR) reduction. To mitigate mode-dependent performance degradation we first present a simple but practical Rx antenna design method. Exploiting the fact that there are specific location sets with phase differences of 90 or 180 degrees, the method allows each OAM mode to be received at its high SNR region. We also introduce two methods to address the Rx SNR reduction issue by exploiting the property of a Gaussian beam generated by multiple uniform circular arrays and by using a dielectric lens antenna. We confirm the feasibility of OAM multiplexing in a proof of concept experiment at 5.2 GHz. The effectiveness of the proposed Rx antenna design method is validated by computer simulations that use experimentally measured values. The two new Rx SNR enhancement methods are validated by computer simulations using wireless transmission at 60 GHz.

show abstract

“…No shortage of literature exists about how to generate and characterize OAM radio and optical waves [6]. Relatively few investigations focus on applications in radio communications, which is our interest in this paper, along the lines of [7,8].…”

Section: Introductionmentioning

confidence: 99%

Reception of OAM Radio Waves Using Pseudo-Doppler Interpolation Techniques: A Frequency-Domain Approach

Klemes

2019

Applied Sciences

View full text Add to dashboard Cite

This paper presents a practical method of receiving waves having orbital angular momentum (OAM) in the far field of an antenna transmitting multiple OAM modes, each carrying a separate data stream at the same radio frequency (RF). The OAM modes are made to overlap by design of the transmitting antenna structure. They are simultaneously received at a known far-field distance using a minimum of two antennas separated by a short distance tangential to the OAM conical beams' maxima and endowed with different pseudo-Doppler frequency shifts by a modulating arrangement that dynamically interpolates their phases between the two receiving antennas. Subsequently down-converted harmonics of the pseudo-Doppler shifted spectra are linearly combined by sets of weighting coefficients which effectively separate each OAM mode in the frequency domain, resulting in a higher signal-to-noise ratios (SNR) than possible using spatial-domain OAM reception techniques. Moreover, no more than two receiving antennas are necessary to separate any number of OAM modes in principle, unlike conventional MIMO (Multi-Input, Multi-Output) which requires at least K antennas to resolve K spatial modes.

show abstract

A New Approach to the Link Budget Concept for an OAM Communication Link

Cited by 33 publications

References 18 publications

Communicating Using Spatial Mode Multiplexing: Potentials, Challenges, and Perspectives

Communicating Using Spatial Mode Multiplexing: Potentials, Challenges, and Perspectives

Orbital Angular Momentum (OAM) Multiplexing: An Enabler of a New Era of Wireless Communications

Reception of OAM Radio Waves Using Pseudo-Doppler Interpolation Techniques: A Frequency-Domain Approach

Contact Info

Product

Resources

About