Enhanced calibration for multiple signal processing paths in a frequency division duplex system
First Claim
1. A method, comprising:
- obtaining calibration data for a plurality of signal processing paths each associated with a transmission device from a plurality of transmission devices;
determining a plurality of calibration weights from the calibration data;
calculating a calibration variance between the plurality of calibration weights and determining if the calibration variance is below a calibration variance threshold;
calculating a phase variation and a magnitude variation from the calibration data for each signal processing path from the plurality of signal processing paths;
determining if the phase variation is below a phase variation threshold and if the magnitude variation is below a magnitude variation threshold for each signal processing path from of the plurality of signal processing paths; and
applying a calibration weight from the plurality of calibration weights to a signal processing path from the plurality of signal processing paths when the calibration variance is below the calibration variance threshold, the phase variation associated with that signal processing path is below the phase variation threshold and the magnitude variation associated with that signal processing path is below the magnitude variation threshold.
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Accused Products
Abstract
Calibrating signal processing paths for a plurality of transmission devices by obtaining calibration data for at least one of the signal processing paths for each of the transmission devices and determining a plurality of calibration weights from the calibration data for each of the transmission devices. A calibration variance is calculated between the plurality of calibration weights and it is determined if the calibration variance is below a calibration variance threshold. Additionally, a phase variation and a magnitude variation are calculated from the calibration data for each of the transmission devices and it is determined for each of the transmission devices if the phase variation is below a phase variation threshold and if the magnitude variation is below a magnitude variation threshold. Further, if the calibration variance is below the calibration variance threshold, and the phase variation is below the phase variation threshold and the magnitude variation is below the magnitude variation threshold for each of the transmission devices, then the plurality of calibration weights are applied to the at least one of the signal processing paths of each of the transmission devices.
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Citations
20 Claims
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1. A method, comprising:
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obtaining calibration data for a plurality of signal processing paths each associated with a transmission device from a plurality of transmission devices; determining a plurality of calibration weights from the calibration data; calculating a calibration variance between the plurality of calibration weights and determining if the calibration variance is below a calibration variance threshold; calculating a phase variation and a magnitude variation from the calibration data for each signal processing path from the plurality of signal processing paths; determining if the phase variation is below a phase variation threshold and if the magnitude variation is below a magnitude variation threshold for each signal processing path from of the plurality of signal processing paths; and applying a calibration weight from the plurality of calibration weights to a signal processing path from the plurality of signal processing paths when the calibration variance is below the calibration variance threshold, the phase variation associated with that signal processing path is below the phase variation threshold and the magnitude variation associated with that signal processing path is below the magnitude variation threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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a calibration unit configured to obtain calibration data for a plurality of signal processing paths each associated with a transmission device from a plurality of transmission devices; a calibration weight determination unit configured to determine a plurality of calibration weights from the calibration data; a variance calculation unit configured to calculate a calibration variance between the plurality of calibration weights, and configured to calculate a phase variation and a magnitude variation from the calibration data for each signal processing path from the plurality of signal processing paths; and a threshold determination unit configured to determine if the calibration variance is below a calibration variance threshold, and configured to determine if the phase variation for a signal processing path from the plurality of signal processing paths is below a phase variation threshold and if the magnitude variation for the signal processing path is below a magnitude variation threshold, a calibration weight from the plurality of calibration weights being applied to the signal processing path from the plurality of signal processing paths if the calibration variance is below the calibration variance threshold, and the phase variation for the signal processing path is below the phase variation threshold, and the magnitude variation for the signal processing path is below the magnitude variation threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer readable storage medium having a program stored thereon that when executed causes a computer to perform a method, comprising:
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obtaining calibration data for a plurality of signal processing paths each associated with a transmission device from a plurality of transmission devices; determining a plurality of calibration weights from the calibration data; calculating a calibration variance between the plurality of calibration weights and determining if the calibration variance is below a calibration variance threshold; calculating a phase variation and a magnitude variation from the calibration data for each signal processing path from the plurality of signal processing paths; determining if the phase variation is below a phase variation threshold and if the magnitude variation is below a magnitude variation threshold for each signal processing path from of the plurality of signal processing paths; and applying a calibration weight from the plurality of calibration weights to a signal processing path from the plurality of signal processing paths when the calibration variance is below the calibration variance threshold, the phase variation associated with that signal processing path is below the phase variation threshold and the magnitude variation associated with the at least one signal processing path is below the magnitude variation threshold. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification