Outage Capacity for MISO Intensity-Modulated Free-Space Optical Links With Misalignment

Farid, A.A.; Hranilovic, Steve

doi:10.1364/jocn.3.000780

Cited by 37 publications

(46 citation statements)

References 13 publications

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“…Atmospheric turbulence parameters α and β are calculated based on Equations (9) and (10), while the strength of atmospheric turbulence is determined by the refractive index in the following way: C 2 n = 6 × 10 −15 m −2/3 for weak, C 2 n = 2 × 10 −14 m −2/3 for moderate and C 2 n = 5 × 10 −14 m −2/3 for strong atmospheric turbulence-induced scintillation [31]. Wavelength λ = 1550 nm and radius of curvature is F 0 = −10 m are considered [10]. Figure 1 shows the average BER dependence on the average electrical SNR of the FSO system with SIM considering different QAM formats.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…The optical signal is further transmitted via atmospheric turbulence channel. Beside atmospheric turbulence, received optical signal is under the influence of pointing errors [7][8][9][10]. At the reception, after performing direct detection and removing DC bias, optical signal is converted to electrical one by PIN photodetector, given by…”

Section: System and Channel Modelmentioning

confidence: 99%

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Average BER performance of FSO SIM-QAM systems in the presence of atmospheric turbulence and pointing errors

Djordjević

Petkovic

2015

Journal of Modern Optics

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This paper presents the exact average bit error rate (BER) analysis of the free-space optical system employing subcarrier intensity modulation (SIM) with Gray-coded quadrature amplitude modulation (QAM). The intensity fluctuations of the received optical signal are caused by the path loss, atmospheric turbulence and pointing errors. The exact closed-form analytical expressions for the average BER are derived assuming the SIM-QAM with arbitrary constellation size in the presence of the Gamma-Gamma scintillation. The simple approximate average BER expressions are also provided, considering only the dominant term in the finite summations of obtained expressions. Derived expressions are reduced to the special case when optical signal transmission is affected only by the atmospheric turbulence. Numerical results are presented in order to illustrate usefulness of the derived expressions and also to give insights into the effects of different modulation, channel and receiver parameters on the average BER performance. The results show that the misalignment between the transmitter laser and receiver detector has the strong effect on the average BER value, especially in the range of the high values of the average electrical signal-to-noise ratio.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: System and Channel Modelmentioning

confidence: 99%

Average BER performance of FSO SIM-QAM systems in the presence of atmospheric turbulence and pointing errors

Djordjević

Petkovic

2015

Journal of Modern Optics

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“…The impact of correlated sways, presented in the two orthogonal axes of a sole transmitter, on WOC was analysed in [28]. More recently, the superposition of misalignment and turbulence interference (without considering correlation) was investigated in [29]. These works tried to elaborate the analysis in different aspects and would help gain more insights of WOC.…”

Section: Conclusion and Remarksmentioning

confidence: 99%

Performance analysis of a multiple-input-single-output optical satellite communication system with correlated pointing errors

Liu

2012

IET Communications

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In this study, the performance of multiple-input-single-output optical communication schemes is analysed in the context of inter-satellite communication. The analysis covers two types of diversity schemes: selection combining (SC) and equal gain combining. Outage probabilities with correlated errors are derived. The main results are expressed in terms of the first-order Marcum Q-function. It is shown that the merit of combining is obvious when the correlation coefficient is less than 0.5 and equal gain combining (EGC) has an advantage over SC in power utilisation.

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“…Alternatively it is also evaluated numerically via measurements in [16] or computed by simulations as in [17]. The results and claims of [16] are used in [18][19][20] to assume independent channel statistics, whereas [21] refers to them to show the appropriateness of the spatial correlation assumption. In addition, the results of [9] for point apertures are extended to apertures with non-negligible diameters in [22] for receive diversity systems.…”

Section: Introductionmentioning

confidence: 99%

Inter-aperture correlation in MIMO free space optical systems

Ozbilgin

Koca

2015

Optics Communications

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Outage Capacity for MISO Intensity-Modulated Free-Space Optical Links With Misalignment

Cited by 37 publications

References 13 publications

Average BER performance of FSO SIM-QAM systems in the presence of atmospheric turbulence and pointing errors

Average BER performance of FSO SIM-QAM systems in the presence of atmospheric turbulence and pointing errors

Performance analysis of a multiple-input-single-output optical satellite communication system with correlated pointing errors

Inter-aperture correlation in MIMO free space optical systems

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