Apparatus and method for communication
AssigneeAnite Finland Oy
InventorSteven Thompson
Life of this patent
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Abstract
Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining as an input a sampled signal; determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds; determining whether the input signal is a GSM-type signal on the basis of the comparisons.
Claims10
An apparatus comprising at least one processor configured to cause the apparatus:
- obtain as an input a sampled signal;
- determine the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a Global System for Mobile communication (GSM) signal;
- determine peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal;
- compare the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds;
- determine whether the input signal is a GSM-type signal on the basis of the comparisons.
An apparatus, comprising:
- means for obtaining as an input a sampled signal;
- means for determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a Global System for Mobile communication (GSM) signal;
- means for determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal;
- means for comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds;
- means for determining whether the input signal is a GSM-type signal on the basis of the comparisons.
A method for recognizing Global System for Mobile communication (GSM) signals, the method comprising:
- obtaining as an input a sampled signal;
- determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a GSM signal;
- determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal;
- comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds;
- determining whether the input signal is a GSM-type signal on the basis of the comparisons.
A computer program product embodied on a distribution medium readable by a computer and comprising program instructions which, when loaded into an apparatus, execute a computer process comprising:
- obtaining as an input a sampled signal;
- determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a GSM signal;
- determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal;
- comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds;
- determining whether the input signal is a GSM-type signal on the basis of the comparisons.
Dependencies are inferred from the claim text.