Introducing a Mixed-Mode Matrix for Investigation of Wireless Communication Related to Orbital Angular Momentum

Park, Woocheon; Wang, Lei; Brüns, Heinz-Dietrich; Kam, Dong Gun; Schuster, Christian

doi:10.1109/tap.2018.2889033

Cited by 28 publications

(8 citation statements)

References 24 publications

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“…This study presents a systematic parameter study on OAM‐based communications using the mixed‐mode matrix. Comprehensive parametric studies have been validated constructively in terms of the specific array configuration with reference to [22]. This study provides a practical sense of OAM‐based communication at a frequency bandwidth of 2.4 GHz.…”

Section: Resultsmentioning

confidence: 99%

“…Then, similarity transformation can be performed with the S‐parameter as follows:

M = A \cdot S \cdot false({bold-italicA}^{normal*} {false)}^{normalT}

The 12‐port S‐parameters at 2.4 GHz were first obtained using the full‐wave simulator based on MoM [23], with the phase of each port being set equal. The mixed‐mode matrix was then calculated following the steps described in [22]:

(][, \begin{matrix} 1em4pt \\ {bold-italicM}_{TT} & {bold-italicM}_{TR} \\ {bold-italicM}_{RT} & {bold-italicM}_{RR} \end{matrix}) = (][, \begin{matrix} 1em4pt \\ {bold-italicA}_{Tx} {bold-italicS}_{TT} {()(, {bold-italicA}_{Tx}^{normal*})}^{normalT} & {bold-italicA}_{Tx} {bold-italicS}_{TR} {()(, {bold-italicA}_{Rx}^{*})}^{normalT} \\ {bold-italicA}_{Rx} {bold-italicS}_{RT} {()(, {bold-italicA}_{Tx}^{normal*})}^{normalT} & {bold-italicA}_{Rx} {bold-italicS}_{RR} {()(, {bold-italicA}_{Rx}^{normal*})}^{normalT} \end{matrix})

where

{bold-italicM}_{TT}

represents the reflection coefficients between different OAM modes at the Tx array, wherea...…”

Section: Investigation Methodsmentioning

confidence: 99%

“…OAM communication as a function of link budget and crosstalk was studied [19] in the case of the same number of array elements for both the Tx and Rx. It is obvious that the mixed‐mode matrix can obtain even asymmetric configurations between the Tx and Rx array elements [22]. Table 1 shows the computed mixed‐mode parameters for each corresponding mode, which demonstrates the possibility of array communication even when composed of asymmetric or few‐element arrays.…”

Section: Systematic Parameter Studiesmentioning

confidence: 99%

“…However, a comprehensive parametric study has not been conducted so far because: (i) OAM field behaviours are very complex [20, 21]; (ii) there are too many design parameters in OAM array configuration; (iii) there has not been a concise mathematical representation that allows better physical insight into OAM‐based communication. The authors have recently introduced a mixed‐mode matrix representation of scattering parameters suitable for investigating OAM‐based communication [22]. The proposed mixed‐mode representation allows the transmission, reflection, and crosstalk of every OAM mode to be shown in a single matrix.…”

Section: Introductionmentioning

confidence: 99%

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Systematic parameter study of orbital angular momentum based radio communication using mixed‐mode matrix

Park

Kam

2020

IET Microwaves, Antennas & Propagation

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This study presents a systematic parameter study on orbital angular momentum (OAM)‐based communication between antenna arrays. The recently proposed mixed‐mode matrix representation is applied for investigating the dependencies of OAM‐based communication on array configuration parameters. It is demonstrated that the performance of multi‐phased systems including the OAM‐based array is optimised in terms of the numerical perspective using a mixed‐mode matrix.

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Section: Resultsmentioning

confidence: 99%

“…Then, similarity transformation can be performed with the S‐parameter as follows:

M = A \cdot S \cdot false({bold-italicA}^{normal*} {false)}^{normalT}

(][, \begin{matrix} 1em4pt \\ {bold-italicM}_{TT} & {bold-italicM}_{TR} \\ {bold-italicM}_{RT} & {bold-italicM}_{RR} \end{matrix}) = (][, \begin{matrix} 1em4pt \\ {bold-italicA}_{Tx} {bold-italicS}_{TT} {()(, {bold-italicA}_{Tx}^{normal*})}^{normalT} & {bold-italicA}_{Tx} {bold-italicS}_{TR} {()(, {bold-italicA}_{Rx}^{*})}^{normalT} \\ {bold-italicA}_{Rx} {bold-italicS}_{RT} {()(, {bold-italicA}_{Tx}^{normal*})}^{normalT} & {bold-italicA}_{Rx} {bold-italicS}_{RR} {()(, {bold-italicA}_{Rx}^{normal*})}^{normalT} \end{matrix})

where

{bold-italicM}_{TT}

represents the reflection coefficients between different OAM modes at the Tx array, wherea...…”

Section: Investigation Methodsmentioning

confidence: 99%

Section: Systematic Parameter Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Systematic parameter study of orbital angular momentum based radio communication using mixed‐mode matrix

Park

Kam

2020

IET Microwaves, Antennas & Propagation

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“…At the receiver end, sometimes hardware analogues to the transmitter radio is used to successfully decode the transmitted signal, for example in circular array-based OAM reception in [14]- [17] and in the planar array system [18]. Receive-side methods for OAM signal recovery are problematical.…”

Section: Introductionmentioning

confidence: 99%

Physical Layer Secure Communication Using Orbital Angular Momentum Transmitter and a Single-Antenna Receiver

Abbasi

Fusco

Naeem

et al. 2020

IEEE Trans. Antennas Propagat.

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Orbital Angular Momentum (OAM) for radio communications has the potential of simultaneously transmitting multiple signals at the same frequency and time resources. This multiplies the achievable channel capacity at a given bandwidth by increasing the available number of simultaneous data streams. One downside of OAM radio communication is the requirement of multi-mode radio frequency (RF) hardware at both ends of a link i.e. transmitter as well as the receiver. This is not always practically viable, especially as we move towards low profile receivers in future communication devices. In this work, we present a novel method of OAM-based radio communication with enhanced physical layer security that requires only a single antenna receiver. We first present the system architecture, then we design and realize a Rotman lens-based circular antenna array transmitter operating at 5.8 GHz. We then experimentally verify the capability of the hardware to create multiple modes. As a proof-of-concept, we propose a communication system that simultaneously uses mode 0 and +1 of the OAM beamformer and in doing so show how a single receive antenna can be used for data recovery. We first identify a general analogue modulation expression and use the proposed system to transmit digitally modulated data stream to a single antenna equipped receiver. A pre-communication training sequence is required to realize the proposed approach. Experimental results verify the simulated predictions.

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RCS reduction metasurface based on orbital angular momentum

Liu,

Chen,

Yan

et al. 2023

Results in Physics

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Introducing a Mixed-Mode Matrix for Investigation of Wireless Communication Related to Orbital Angular Momentum

Cited by 28 publications

References 24 publications

Systematic parameter study of orbital angular momentum based radio communication using mixed‐mode matrix

Systematic parameter study of orbital angular momentum based radio communication using mixed‐mode matrix

Physical Layer Secure Communication Using Orbital Angular Momentum Transmitter and a Single-Antenna Receiver

RCS reduction metasurface based on orbital angular momentum

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