System and method of implementing variable loop gain in an optical wireless link based on distance
First Claim
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1. A method of varying loop gain in an optical wireless link, the method comprising the steps of:
- calibrating the optical wireless link to generate a default loop gain, KnomDist, for a first operating distance between a transmitting station and a receiving station;
determining a real operating distance between the transmitting station and the receiving station; and
calibrating the optical wireless link to generate an optimized loop gain, Kdist, as a function of the default loop gain, the first operating distance, and the real operating distance.
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Abstract
A system and method of varying the control loop gain of an optical wireless communication link between a transmitting station and a receiving station as an inverse function of distance between the transmitting station and the receiving station to allow the optical wireless communication link to be used reliably over a wide range of distances.
15 Citations
19 Claims
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1. A method of varying loop gain in an optical wireless link, the method comprising the steps of:
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calibrating the optical wireless link to generate a default loop gain, KnomDist, for a first operating distance between a transmitting station and a receiving station;
determining a real operating distance between the transmitting station and the receiving station; and
calibrating the optical wireless link to generate an optimized loop gain, Kdist, as a function of the default loop gain, the first operating distance, and the real operating distance. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling loop gain in an optical wireless link formed between a transmitting station and a receiving station, the method comprising the steps of:
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calibrating the optical wireless link to generate a nominal loop gain associated with a nominal operating distance between the transmitting station and the receiving station;
determining a real operating distance between the transmitting station and the receiving station;
calibrating the optical wireless link to generate an optimized loop gain as a function of the nominal loop gain, the nominal operating distance, and the real operating distance; and
causing rotation associated with a mirror rotation motor to vary in response to changes in the optimized loop gain caused by changes in the real operating distance between the transmitting station and the receiving station. - View Dependent Claims (7, 8, 9)
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10. A system for controlling loop gain in an optical wireless link formed between an optical transmitting station and an optical receiving station comprising:
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a mirror rotation motor;
at least one position sensor operational to sense rotation caused by the mirror rotation motor and generate position data thereof;
a data processing device in communication with the mirror rotation motor and the at least one position sensor; and
an algorithmic software directing the data processing device, wherein the position data is supplied to the data processing device such that the data processing device, directed by the algorithmic software, is operational to generate optimized loop gain data as in inverse function of distance between the transmitting station and the receiving station, and further wherein the mirror rotation motor is operational to rotate a mirror in response to the optimized loop gain data. - View Dependent Claims (11, 12)
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13. A system for controlling loop gain in an optical wireless link formed between an optical transmitting station and an optical receiving station comprising:
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rotating means for rotating a mirror;
sensing means for sensing rotation caused by the rotating means to generate position data thereof;
data processing means in communication with the rotating means and the sensing means for processing the position data; and
an algorithmic software directing the data processing means, wherein the position data is supplied to the data processing means such that the data processing means, directed by the algorithmic software, is operational to generate optimized loop gain data as in inverse function of distance between the transmitting station and the receiving station, and further wherein the rotating means is operational to rotate a mirror in response to the optimized loop gain data. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification