LDPC-coded MIMO optical communication over the atmospheric turbulence channel

Ivan B. Djordjevic; Stojan Denic; Jaime Anguita; Bane Vasic; Mark A. Neifeld

doi:10.1109/JLT.2007.916514

LDPC-coded MIMO optical communication over the atmospheric turbulence channel

Ivan B. Djordjevic^*, Stojan Denic, Jaime Anguita, Bane Vasic, Mark A. Neifeld

^*Corresponding author for this work

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

67 Scopus citations

Abstract

In this paper, coded multiple-input-multiple-output (MIMO) communication schemes for data transmission over the optical atmospheric turbulence channels are studied. Two strategies are proposed and compared. The first is based on repetition coding, and the second on space-time (ST) coding. Both approaches employ low-density parity-check (LDPC) codes. The LDPC codes are designed using the concept of pairwise balanced design (PBD), balanced incomplete block design (BIBBD), and block-circulant (array) codes. To improve the spectral efficiency, we employ a bit-interleaved (BI) LDPC-coded modulation based on the pulse amplitude modulation (PAM). A better bit error rate (BER) performance is achieved by the iteration of extrinsic information between a demapper and LDPC decoder. The simulations show that the LDPC-coded MIMO schemes can operate under a strong atmospheric turbulence and at the same time provide excellent coding gains compared with the transmission of uncoded data. To verify the efficiency of the proposed coding schemes, achievable information rates are computed when the turbulence is modeled by a gamma-gamma distribution.

Original language	English
Pages (from-to)	478-487
Number of pages	10
Journal	Journal of Lightwave Technology
Volume	26
Issue number	5
DOIs	https://doi.org/10.1109/JLT.2007.916514
State	Published - 1 Mar 2008
Externally published	Yes

Bibliographical note

Funding Information:
Manuscript received June 2, 2007; revised December 3, 2007. This work was supported in part by the National Science Foundation (NSF) under Grant IHCS 0725405. Part of this paper was presented at the IEEE Global Communications Conference (Globecom), Washington, DC, November 26–30, 2007. The authors are with the Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JLT.2007.916514

Keywords

Atmospheric turbulence
Direct detection
Free-space optical (FSO) communications
Low-density parity-check (LDPC) codes
Space-time (ST) coding

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10.1109/JLT.2007.916514

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title = "LDPC-coded MIMO optical communication over the atmospheric turbulence channel",

abstract = "In this paper, coded multiple-input-multiple-output (MIMO) communication schemes for data transmission over the optical atmospheric turbulence channels are studied. Two strategies are proposed and compared. The first is based on repetition coding, and the second on space-time (ST) coding. Both approaches employ low-density parity-check (LDPC) codes. The LDPC codes are designed using the concept of pairwise balanced design (PBD), balanced incomplete block design (BIBBD), and block-circulant (array) codes. To improve the spectral efficiency, we employ a bit-interleaved (BI) LDPC-coded modulation based on the pulse amplitude modulation (PAM). A better bit error rate (BER) performance is achieved by the iteration of extrinsic information between a demapper and LDPC decoder. The simulations show that the LDPC-coded MIMO schemes can operate under a strong atmospheric turbulence and at the same time provide excellent coding gains compared with the transmission of uncoded data. To verify the efficiency of the proposed coding schemes, achievable information rates are computed when the turbulence is modeled by a gamma-gamma distribution.",

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note = "Funding Information: Manuscript received June 2, 2007; revised December 3, 2007. This work was supported in part by the National Science Foundation (NSF) under Grant IHCS 0725405. Part of this paper was presented at the IEEE Global Communications Conference (Globecom), Washington, DC, November 26–30, 2007. The authors are with the Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JLT.2007.916514",

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AU - Vasic, Bane

AU - Neifeld, Mark A.

N1 - Funding Information: Manuscript received June 2, 2007; revised December 3, 2007. This work was supported in part by the National Science Foundation (NSF) under Grant IHCS 0725405. Part of this paper was presented at the IEEE Global Communications Conference (Globecom), Washington, DC, November 26–30, 2007. The authors are with the Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JLT.2007.916514

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N2 - In this paper, coded multiple-input-multiple-output (MIMO) communication schemes for data transmission over the optical atmospheric turbulence channels are studied. Two strategies are proposed and compared. The first is based on repetition coding, and the second on space-time (ST) coding. Both approaches employ low-density parity-check (LDPC) codes. The LDPC codes are designed using the concept of pairwise balanced design (PBD), balanced incomplete block design (BIBBD), and block-circulant (array) codes. To improve the spectral efficiency, we employ a bit-interleaved (BI) LDPC-coded modulation based on the pulse amplitude modulation (PAM). A better bit error rate (BER) performance is achieved by the iteration of extrinsic information between a demapper and LDPC decoder. The simulations show that the LDPC-coded MIMO schemes can operate under a strong atmospheric turbulence and at the same time provide excellent coding gains compared with the transmission of uncoded data. To verify the efficiency of the proposed coding schemes, achievable information rates are computed when the turbulence is modeled by a gamma-gamma distribution.

AB - In this paper, coded multiple-input-multiple-output (MIMO) communication schemes for data transmission over the optical atmospheric turbulence channels are studied. Two strategies are proposed and compared. The first is based on repetition coding, and the second on space-time (ST) coding. Both approaches employ low-density parity-check (LDPC) codes. The LDPC codes are designed using the concept of pairwise balanced design (PBD), balanced incomplete block design (BIBBD), and block-circulant (array) codes. To improve the spectral efficiency, we employ a bit-interleaved (BI) LDPC-coded modulation based on the pulse amplitude modulation (PAM). A better bit error rate (BER) performance is achieved by the iteration of extrinsic information between a demapper and LDPC decoder. The simulations show that the LDPC-coded MIMO schemes can operate under a strong atmospheric turbulence and at the same time provide excellent coding gains compared with the transmission of uncoded data. To verify the efficiency of the proposed coding schemes, achievable information rates are computed when the turbulence is modeled by a gamma-gamma distribution.

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LDPC-coded MIMO optical communication over the atmospheric turbulence channel

Abstract

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Keywords

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