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US 2003/0198258 A1Published application
Method and system for determining a propagation delay, and an electronic device
AssigneeNokia Corporation
InventorPetri Jarske
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AssigneeNokia Corporation
InventorPetri Jarske
Estimating the term…
The present invention relates to a method for determining the propagation delay of a signal. In the method a burst signal transmitted from one or more access points is received, said signal comprising at least one part containing fixed information. Samples are taken from the received signal to produce a sampled signal (s(n)). The received signal comprises signal components propagated via one or several paths. In the method the sampled signal (s(n)) and the signal corresponding to said fixed information (t(n)) are correlated with each other, wherein the correlation results produced in the correlation are processed by separating at least one signal component from the correlation results. Said signal corresponding to said fixed information (t(n)) is used in the separation. As a result of the processing, values corresponding to the maximum correlation are searched for, wherein a temporally first value is determined from the found values corresponding to the maximum correlation, said first value being used for determining the timing of the signal
A method for determining the propagation delay of a signal, in which method a burst signal transmitted from one or more access points is received, which signal comprises at least one part containing fixed information, and in which method samples are taken from the received signal to produce a sampled signal, and said received signal comprises signal components which have propagated via one or more different paths, wherein in the method the sampled signal and the signal corresponding to said fixed information are correlated with each other, wherein the correlation results produced in the correlation are processed by separating at least one signal component from the correlation results, in which separation the signal corresponding to said fixed information is used, and that values corresponding to the maximum correlation are searched for in the signal produced as a result of the processing, and a temporally first value is determined from the found values corresponding to the maximum values, said first value being used for determining the timing of the signal.
A system comprising one or more access points from which a burst signal is transmitted, which signal comprises at least one part containing fixed information, an electronic device comprising means for receiving the burst signal transmitted by said one or more access points, means for determining a propagation delay of the received signal and means for taking samples from the received signal to produce a sampled signal, said received signal comprising signal components which have propagated via one or more different paths, wherein the system also comprises correlation means for correlating the sampled signal and the signal corresponding to said fixed information with each other, means for processing the correlation results produced in the correlation by separating at least one signal component from the correlation results, in which separation the signal corresponding to said fixed information is arranged to be used, means for searching for values corresponding to the maximum correlation in the signal produced as a result of the processing, and means for determining a temporally first value of the found values and using said first value for determining the timing of the signal.
An electronic device comprising means for receiving a burst signal transmitted by one or more access points, said signal comprising at least one part containing fixed information, means for determining a propagation delay of the received signal and means for taking samples from the received signal to form a sampled signal, said received signal comprising signal components propagated via one or more different paths, wherein the electronic device also comprises correlation means for correlating the sampled signal and the signal corresponding to said fixed information with each other, means for processing the correlation results produced in the correlation by separating at least one signal component from the correlation results, in which separation the signal corresponding to said fixed information is arranged to be used, means for searching for values corresponding to the maximum correlation in the signal produced as a result of the processing, and means for determining a temporally first value from the found values and using the same for determining the timing of the signal.
Dependencies are inferred from the claim text.