Shannon capacities and error-correction codes for optical atmospheric turbulent channels

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

doi:10.1364/JON.4.000586

Shannon capacities and error-correction codes for optical atmospheric turbulent channels

Jaime A. Anguita, Ivan B. Djordjevic, Mark A. Neifeld, Bane V. Vasic

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

136 Scopus citations

Abstract

The propagation of an ON-OFF keying modulated optical signal through an optical atmospheric turbulent channel is considered. The intensity fluctuations of the signal observed at the receiver are modeled using a gamma-gamma distribution. The capacity of this channel is determined for a wide range of turbulence conditions. For a zero inner scale, the capacity decreases monotonically as the turbulence strengthens. For non-zero inner scale, the capacity is not monotonic with turbulence strength. Two error-correction schemes, based on low-density parity-check (LDPC) codes, are investigated as a means to improve the bit-error rate (BER) performance of the system. Very large coding gains - ranging from 5.5 to 14 dB, depending on the turbulence conditions - are obtained by these LDPC codes compared with Reed-Solomon error-correction codes of similar rates and lengths.

Original language	English (US)
Journal	Journal of Optical Networking
Volume	4
Issue number	9
DOIs	https://doi.org/10.1364/JON.4.000586
State	Published - Sep 2005

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Computer Science Applications
Computer Networks and Communications
Electrical and Electronic Engineering

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10.1364/JON.4.000586

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title = "Shannon capacities and error-correction codes for optical atmospheric turbulent channels",

abstract = "The propagation of an ON-OFF keying modulated optical signal through an optical atmospheric turbulent channel is considered. The intensity fluctuations of the signal observed at the receiver are modeled using a gamma-gamma distribution. The capacity of this channel is determined for a wide range of turbulence conditions. For a zero inner scale, the capacity decreases monotonically as the turbulence strengthens. For non-zero inner scale, the capacity is not monotonic with turbulence strength. Two error-correction schemes, based on low-density parity-check (LDPC) codes, are investigated as a means to improve the bit-error rate (BER) performance of the system. Very large coding gains - ranging from 5.5 to 14 dB, depending on the turbulence conditions - are obtained by these LDPC codes compared with Reed-Solomon error-correction codes of similar rates and lengths.",

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T1 - Shannon capacities and error-correction codes for optical atmospheric turbulent channels

AU - Anguita, Jaime A.

AU - Djordjevic, Ivan B.

AU - Neifeld, Mark A.

AU - Vasic, Bane V.

PY - 2005/9

Y1 - 2005/9

N2 - The propagation of an ON-OFF keying modulated optical signal through an optical atmospheric turbulent channel is considered. The intensity fluctuations of the signal observed at the receiver are modeled using a gamma-gamma distribution. The capacity of this channel is determined for a wide range of turbulence conditions. For a zero inner scale, the capacity decreases monotonically as the turbulence strengthens. For non-zero inner scale, the capacity is not monotonic with turbulence strength. Two error-correction schemes, based on low-density parity-check (LDPC) codes, are investigated as a means to improve the bit-error rate (BER) performance of the system. Very large coding gains - ranging from 5.5 to 14 dB, depending on the turbulence conditions - are obtained by these LDPC codes compared with Reed-Solomon error-correction codes of similar rates and lengths.

AB - The propagation of an ON-OFF keying modulated optical signal through an optical atmospheric turbulent channel is considered. The intensity fluctuations of the signal observed at the receiver are modeled using a gamma-gamma distribution. The capacity of this channel is determined for a wide range of turbulence conditions. For a zero inner scale, the capacity decreases monotonically as the turbulence strengthens. For non-zero inner scale, the capacity is not monotonic with turbulence strength. Two error-correction schemes, based on low-density parity-check (LDPC) codes, are investigated as a means to improve the bit-error rate (BER) performance of the system. Very large coding gains - ranging from 5.5 to 14 dB, depending on the turbulence conditions - are obtained by these LDPC codes compared with Reed-Solomon error-correction codes of similar rates and lengths.

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Shannon capacities and error-correction codes for optical atmospheric turbulent channels

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