Error-correction coded orbital-angular-momentum modulation for FSO channels affected by turbulence

Ivan B. Djordjevic; Jaime A. Anguita; Bane Vasic

doi:10.1109/JLT.2012.2206560

Error-correction coded orbital-angular-momentum modulation for FSO channels affected by turbulence

Ivan B. Djordjevic, Jaime A. Anguita, Bane Vasic

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

The performance of LDPC-precoded, orbital-angular-momentum (OAM) modulation is studied over a 1-km free-space laser communication link subject to OAM modal crosstalk induced by atmospheric turbulence. The multidimensional signal constellation is designed as the Cartesian product of a one-dimensional non-negative pulse-amplitude modulation and a set of orthogonal OAM modes. We evaluate the performance of this modulation scheme by first determining conditional probability density functions (PDFs) of the modal crosstalk for each symbol, resulting from the propagation in weak turbulence using a numerical propagation model. It is observed that OAM modulation is more sensitive to atmospheric turbulence as the number of dimensions increases. However, this can be efficiently mitigated by an error-correction code. The coded OAM modulation scheme provides an energy-efficient alternative to single-mode transmission, since a larger rate can be obtained per given bandwidth.

Original language	English (US)
Article number	6227318
Pages (from-to)	2846-2852
Number of pages	7
Journal	Journal of Lightwave Technology
Volume	30
Issue number	17
DOIs	https://doi.org/10.1109/JLT.2012.2206560
State	Published - 2012

Keywords

Atmospheric turbulence
coded modulation
free-space optical communication
low-density parity-check (LDPC) codes
modulation
orbital angular momentum (OAM)

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/JLT.2012.2206560

Cite this

@article{244ce5c787154aacb05656f57dfb52c0,

title = "Error-correction coded orbital-angular-momentum modulation for FSO channels affected by turbulence",

abstract = "The performance of LDPC-precoded, orbital-angular-momentum (OAM) modulation is studied over a 1-km free-space laser communication link subject to OAM modal crosstalk induced by atmospheric turbulence. The multidimensional signal constellation is designed as the Cartesian product of a one-dimensional non-negative pulse-amplitude modulation and a set of orthogonal OAM modes. We evaluate the performance of this modulation scheme by first determining conditional probability density functions (PDFs) of the modal crosstalk for each symbol, resulting from the propagation in weak turbulence using a numerical propagation model. It is observed that OAM modulation is more sensitive to atmospheric turbulence as the number of dimensions increases. However, this can be efficiently mitigated by an error-correction code. The coded OAM modulation scheme provides an energy-efficient alternative to single-mode transmission, since a larger rate can be obtained per given bandwidth.",

keywords = "Atmospheric turbulence, coded modulation, free-space optical communication, low-density parity-check (LDPC) codes, modulation, orbital angular momentum (OAM)",

author = "Djordjevic, {Ivan B.} and Anguita, {Jaime A.} and Bane Vasic",

note = "Funding Information: Manuscript received February 09, 2012; revised May 25, 2012; accepted June 25, 2012. Date of publication June 28, 2012; date of current version August 17, 2012. This work was supported in part by the National Science Foundation under Grant CCF-0952711, Grant ECCS-0725405, and Grant CCF-0963726, the Chilean Science and Technology Commission through Grant Fondecyt-1090709, an FAI grant from Universidad de los Andes. This work was presented in part at IEEE Globecom, Houston, TX, 2011.",

year = "2012",

doi = "10.1109/JLT.2012.2206560",

language = "English (US)",

volume = "30",

pages = "2846--2852",

journal = "Journal of Lightwave Technology",

issn = "0733-8724",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "17",

}

TY - JOUR

T1 - Error-correction coded orbital-angular-momentum modulation for FSO channels affected by turbulence

AU - Djordjevic, Ivan B.

AU - Anguita, Jaime A.

AU - Vasic, Bane

N1 - Funding Information: Manuscript received February 09, 2012; revised May 25, 2012; accepted June 25, 2012. Date of publication June 28, 2012; date of current version August 17, 2012. This work was supported in part by the National Science Foundation under Grant CCF-0952711, Grant ECCS-0725405, and Grant CCF-0963726, the Chilean Science and Technology Commission through Grant Fondecyt-1090709, an FAI grant from Universidad de los Andes. This work was presented in part at IEEE Globecom, Houston, TX, 2011.

PY - 2012

Y1 - 2012

N2 - The performance of LDPC-precoded, orbital-angular-momentum (OAM) modulation is studied over a 1-km free-space laser communication link subject to OAM modal crosstalk induced by atmospheric turbulence. The multidimensional signal constellation is designed as the Cartesian product of a one-dimensional non-negative pulse-amplitude modulation and a set of orthogonal OAM modes. We evaluate the performance of this modulation scheme by first determining conditional probability density functions (PDFs) of the modal crosstalk for each symbol, resulting from the propagation in weak turbulence using a numerical propagation model. It is observed that OAM modulation is more sensitive to atmospheric turbulence as the number of dimensions increases. However, this can be efficiently mitigated by an error-correction code. The coded OAM modulation scheme provides an energy-efficient alternative to single-mode transmission, since a larger rate can be obtained per given bandwidth.

AB - The performance of LDPC-precoded, orbital-angular-momentum (OAM) modulation is studied over a 1-km free-space laser communication link subject to OAM modal crosstalk induced by atmospheric turbulence. The multidimensional signal constellation is designed as the Cartesian product of a one-dimensional non-negative pulse-amplitude modulation and a set of orthogonal OAM modes. We evaluate the performance of this modulation scheme by first determining conditional probability density functions (PDFs) of the modal crosstalk for each symbol, resulting from the propagation in weak turbulence using a numerical propagation model. It is observed that OAM modulation is more sensitive to atmospheric turbulence as the number of dimensions increases. However, this can be efficiently mitigated by an error-correction code. The coded OAM modulation scheme provides an energy-efficient alternative to single-mode transmission, since a larger rate can be obtained per given bandwidth.

KW - Atmospheric turbulence

KW - coded modulation

KW - free-space optical communication

KW - low-density parity-check (LDPC) codes

KW - modulation

KW - orbital angular momentum (OAM)

UR - http://www.scopus.com/inward/record.url?scp=84865426494&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865426494&partnerID=8YFLogxK

U2 - 10.1109/JLT.2012.2206560

DO - 10.1109/JLT.2012.2206560

M3 - Article

AN - SCOPUS:84865426494

SN - 0733-8724

VL - 30

SP - 2846

EP - 2852

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

IS - 17

M1 - 6227318

ER -

Error-correction coded orbital-angular-momentum modulation for FSO channels affected by turbulence

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this