Apparatus and method for estimating channel based on weather data
First Claim
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1. A method of estimating a channel, the method comprising:
- receiving, by a central station, a message comprising channel measurement information from a terminal;
extracting, by the central station, channel measurement information from the received message and acquiring sample data by processing the channel measurement information;
acquiring, by the central station, weather data corresponding to a region at which the terminal is located, wherein the acquiring of sample data comprises;
providing a first weight value to previously calculated sample data and applying a different weight value from the first weight value to present channel measurement information that is extracted from the received message; and
calculating sample data of the received message based on the previous sample data to which the first weight value is applied and present channel measurement information to which a different weight value from the first weight value is applied;
calculating, by the central station, a channel estimating value based on the sample data and the weather data; and
determining, by the central station, encoding and modulation methods for processing data based on the channel estimating value.
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Abstract
In a satellite communication system, a central station receives a message including channel measurement information that is provided from a terminal and calculates a channel estimating value based on the received channel measurement information and weather data of a region corresponding to a location of the terminal. The central station determines encoding and modulation methods of data to transmit based on the calculated channel estimating value.
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Citations
14 Claims
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1. A method of estimating a channel, the method comprising:
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receiving, by a central station, a message comprising channel measurement information from a terminal; extracting, by the central station, channel measurement information from the received message and acquiring sample data by processing the channel measurement information; acquiring, by the central station, weather data corresponding to a region at which the terminal is located, wherein the acquiring of sample data comprises; providing a first weight value to previously calculated sample data and applying a different weight value from the first weight value to present channel measurement information that is extracted from the received message; and calculating sample data of the received message based on the previous sample data to which the first weight value is applied and present channel measurement information to which a different weight value from the first weight value is applied; calculating, by the central station, a channel estimating value based on the sample data and the weather data; and determining, by the central station, encoding and modulation methods for processing data based on the channel estimating value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of estimating a channel, the method comprising:
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receiving, by a central station, a message comprising channel measurement information from a terminal; extracting, by the central station, channel measurement information from the received message and acquiring sample data by processing the channel measurement information; acquiring, by the central station, weather data corresponding to a region at which the terminal is located; calculating, by the central station, a channel estimating value based on the sample data and the weather data, wherein the calculating of a channel estimating value comprises; providing a weight value to the acquired sample data and applying a different weight value from the weight value to the weather data; and calculating the channel estimating value based on sample data to which the weight value is applied and the weather data to which a different weight value from the weight value is applied; and determining, by the central station, encoding and modulation methods for processing data based on the channel estimating value. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification