Method for Classifying Radio Channels
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Accused Products
Abstract
In a method and device, simple hardware such as a standard User Equipment (UE), a mobile telephone, is used to collect the impulse response of a radio channel. The data generated is used to classify radio channels based on the impulse response estimates by estimating distribution parameters of the impulse response. This makes it possible to distinguish between different types of fading and hence, radio environments by matching the parameters to known radio channel models.
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Citations
32 Claims
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1-16. -16. (canceled)
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17. An apparatus for classifying radio channels in a cellular radio system characterized by:
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a receiver for receiving a signal in the cellular radio system, said signal received through a radio channel; and a computer associated with the receiver and configured to classify the radio channel by matching received signal characteristics determined from a channel impulse response measured for the received signal to a stored set of radio channel models, and thereby determine which radio channel model in the set best corresponds to the received signal characteristics. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method for classifying radio channels in a cellular radio system, the method comprising:
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receiving a signal in the cellular radio system, said signal received through a radio channel; measuring a channel impulse response from the received signal; storing characteristic parameters for a set of radio channel models; matching received signal characteristics determined from the channel impulse response to the set of radio channel models; and determining which radio channel model in the set best corresponds to the received signal characteristics and classifying the radio channel accordingly. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A method of classifying a radio channel comprising:
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receiving a signal from a cellular radio system at a mobile terminal, said signal received through the radio channel; and passing channel estimation data generated by the mobile terminal for the received signal to a computer communicatively coupled to the mobile terminal, and, in the computer; estimating characteristic parameters for the radio channel from the channel estimation data; and classifying the radio channel by comparing the characteristic parameters estimated for the radio channel to characteristic parameters for a stored set of radio channel models.
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Specification