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Path: Link/Optical
% Compute the receiver noise density.
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Form:
nO = OpticalReceiverNoiseDensity( d )
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Inputs
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d (:) Input data structure
d.type 'Coherent', 'Direct'
All
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d.M Avalanche gain of the detector
d.kEff Ionization coefficient of the photodiode
d.pB Received background power (W)
d.rD Detector responsivity
d.iDU Unmultiplied dc dark noise current
d.iDM Multiplied dc dark noise current
d.T Effective noise temperature of the feedback resistor
d.rF Resistance of the feedback resistor
d.pAvg Average signal power over the bit period
Coherent
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d.pLO Local oscillator power incident upon the photodetector
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Outputs
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nO (:) Noise density
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References: Lambert, S. G. and W. L. Casey (1995.) Laser Communications
in Space. Artech, Boston. pp. 145-168.
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