Per carrier scaling of a cancellation pulse of a multi-carrier signal
AssigneeMeta Platforms, Inc.
InventorsMohammad Janani, Djordje Tujkovic
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Abstract
Apparatuses, methods, and systems for per carrier scaling of a cancellation pulse of a multi-carrier signal are disclosed. One method includes identifying a target PAPR (peak to average power ratio) for the multi-carrier signal, identifying a target EVM (error vector magnitude) for each of cj carriers of the multi-carrier signal, setting a scaling factor for each of the cj carrier to an initial value, or each carrier cj adjusting the scaling factor for the carrier cj until a measured EVM of the carrier cj satisfies the target EVM for the subcarrier cj while maintaining the PAPR target for the multi-carrier signal, and the cancellation pulse of the multi-carrier signal with the adjusted scaling factor for each of the cj carriers.
Claims20
A method of a cancellation pulse of a multi-carrier signal, comprising:
- identifying a target peak-to-average-power ratio (PAPR) for the multi-carrier signal;
- identifying a target error vector magnitude (EVM) for cj carriers of the multi-carrier signal;
- setting a scaling factor for each of the cj carriers to an initial value;
- for the cj carriers:
- adjusting the scaling factor for the carrier cj until a measured EVM of the carrier cj satisfies the target EVM for a subcarrier cj, while maintaining the PAPR target for the multi-carrier signal;
- and
- scaling the cancellation pulse of the multi-carrier signal with the adjusting of the scaling factor for the cj carriers, resulting in a scaled cancellation pulse.
A multi-carrier signal transmitter comprising:
- a multi-carrier signal generator configured to generate a multi-carrier signal for transmission;
- and
- a controller configured to;
- identify a target peak-to-average-power ratio (PAPR) for the multi-carrier signal;
- identify a target error vector magnitude (EVM) for cj carriers of the multi-carrier signal;
- set a scaling factor for the cj carriers to an initial value;
- for the cj carriers:
- adjust the scaling factor for the cj carriers until a measured EVM of the cj carriers satisfies the target EVM for a subcarrier cj while maintaining the PAPR target for the multi-carrier signal;
- and
- scale a cancellation pulse of the multi-carrier signal with the adjusted scaling factor for the cj carriers, resulting in a scaled cancellation pulse.
Dependencies are inferred from the claim text.