Method and apparatus for peak to average power reduction in wireless communication systems using spectral mask filling
First Claim
1. A user equipment for wireless communication with at least one base station comprising:
- a transceiver configured to communicate with the at least one base station by transmitting radio frequency (RF) signals to the at least one base station and by receiving RF signals from the at least one base station;
processing circuitry configured to;
identify an occupied signal bandwidth of the RF signals;
identify a spectral mask for the occupied signal bandwidth;
identify an unused available spectrum between the occupied signal bandwidth and the spectral mask; and
modulate a spectral mask filling (SMF) signal in the unused available spectrum, the SMF signal configured to reduce a peak-to-average power ratio of the RF signals; and
a plurality of RF chains, each RF chain comprising an RF stream, wherein the processing circuitry is further configured to modulate the SMF signal in the unused available spectrum independently on each of the RF streams with appropriate scaling levels relative to a signal power applied for each of the RF streams.
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Accused Products
Abstract
A user equipment, apparatus, and method are provided for wireless communication with at least one base station. The user equipment includes a transceiver configured to communicate with the at least one base station by transmitting radio frequency signals to the at least one base station and by receiving radio frequency signals from the at least one base station. The user equipment also includes processing circuitry. The processing circuitry is configured to identify an occupied signal bandwidth of the radio frequency signals. The processing circuitry is also configured to identify a spectral mask for the occupied signal bandwidth. The processing circuitry is also configured to identify an unused available spectrum between the occupied signal bandwidth and the spectral mask. The processing circuitry is also configured to modulate a spectral mask filling (SMF) signal in the unused available spectrum, the SMF signal configured to reduce the peak-to-average power ratio of the radio frequency signals.
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Citations
18 Claims
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1. A user equipment for wireless communication with at least one base station comprising:
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a transceiver configured to communicate with the at least one base station by transmitting radio frequency (RF) signals to the at least one base station and by receiving RF signals from the at least one base station; processing circuitry configured to; identify an occupied signal bandwidth of the RF signals; identify a spectral mask for the occupied signal bandwidth; identify an unused available spectrum between the occupied signal bandwidth and the spectral mask; and modulate a spectral mask filling (SMF) signal in the unused available spectrum, the SMF signal configured to reduce a peak-to-average power ratio of the RF signals; and a plurality of RF chains, each RF chain comprising an RF stream, wherein the processing circuitry is further configured to modulate the SMF signal in the unused available spectrum independently on each of the RF streams with appropriate scaling levels relative to a signal power applied for each of the RF streams. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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a memory element configured to store radio frequency (RF) signals; a controller coupled to the memory element, the controller configured to; identify an occupied signal bandwidth of the RF signals; identify a spectral mask for the occupied signal bandwidth identify an unused available spectrum between the occupied signal bandwidth and the spectral mask; and modulate a spectral mask filling (SMF) signal in the unused available spectrum, the SMF signal configured to reduce a peak-to-average power ratio of the RF signals; and a plurality of RF chains, each RF chain comprising an RF stream, wherein the controller is further configured to modulate the SMF signal in the unused available spectrum independently on each of the RF streams with appropriate scaling levels relative to a signal power applied for each of the RF streams. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for peak to average peak ratio reduction, the method comprising:
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identifying an occupied signal bandwidth of radio frequency (RF) signals; identifying a spectral mask for the occupied signal bandwidth; identifying an unused available spectrum between the occupied signal bandwidth and the spectral mask; modulating a spectral mask filling (SMF) signal in the unused available spectrum, the SMF signal configured to reduce a peak-to-average power ratio of the RF signals; and modulating the SMF signal in the unused available spectrum independently on each of a plurality of RF streams with appropriate scaling levels relative to a signal power applied for each of the RF streams, where each of a plurality of RF chains comprises a respective on of the plurality of RF streams. - View Dependent Claims (18)
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Specification