Mitigation of transmitted energy on subcarriers using destructive interference
AssigneeT-Mobile Innovations LLC
InventorsSharath SOMASHEKAR, Deveshkumar Narendrapratap Rai
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Abstract
Embodiments of the present disclosure are directed to systems and methods for mitigating energy transmitted on subcarriers in a communications network. For example, a signal intended for transmission may be allocated with blanked Physical Resource Blocks (PRBs) and non-blanked PRBs. In order to reduce residual energy transmission within the blanked PRBs, selective filtering may be applied to a post-amplified waveform to mitigate unwanted energy introduced or exacerbated by power amplifiers in the communications network.
Claims20
A system for mitigating energy transmitted on subcarriers in a communications network, the system comprising:
- a transceiver module;
- a network device comprising one or more processors;
- and
- a non-transitory computer-readable media comprising executable instructions that, when executed, causes the network device to perform operations in the communications network, the executable instructions comprising the steps of:
- receiving scheduling data associated with a first waveform;
- determining, based on the scheduling data, that a first band of the first waveform comprises blanked Physical Resource Blocks (PRBs);
- generating a second waveform that, when summed with the first waveform, destructively interferes with the first band;
- and
- summing the first waveform with the second waveform to form a summed waveform.
A non-transitory computer-readable media comprising executable instructions that, when executed, causes a network device comprising one or more processors to perform operations for mitigating energy transmitted on subcarriers in a communications network, the executable instructions comprising the steps of:
- monitoring an output of a Digital to Analog Converter (DAC), the output comprising a plurality of blanked Physical Resource Blocks (PRBs) and a plurality of non-blanked PRBs;
- generating a waveform that, when summed with the output of the DAC, forms a summed waveform that only has energy on the plurality of non-blanked PRBs;
- and
- summing the output of the DAC with the generated waveform to form the summed waveform.
A method for mitigating energy transmitted on subcarriers in a communications network, the method comprising:
- generating a first waveform, the first waveform comprising a first plurality of Physical Resource Blocks (PRBs) and a second plurality of PRBs;
- generating a second waveform that, when summed with the first waveform, forms a summed waveform that only transmits energy on the second plurality of PRBs;
- summing the first waveform with the second waveform to form the summed waveform;
- and
- transmitting the summed waveform to an amplifier.
Dependencies are inferred from the claim text.