Method for reducing peak-to-average power ratio PAPR, and communication apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsZhengwei Gong, Yaqiu Peng, Yongchao Pan
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Abstract
Embodiments of this application disclose a method for reducing a peak-to-average power ratio PAPR, and a communication apparatus, and are applied to a transmitting system including a power amplifier. In the method, a reserved resource may be determined based on a first unscheduled resource in transmission bandwidth and/or a second unscheduled resource in guard bandwidth, and a fixed reserved resource in a conventional technology does not need to be used. Therefore, flexibility of determining the reserved resource can be improved, and flexibility of reducing a peak-to-average power ratio PAPR in a frequency domain resource reservation TR manner can further be improved.
Claims17
A method for reducing a peak-to-average power ratio (PAPR), wherein the method comprises:
- determining a reserved resource based on an unscheduled resource in a system bandwidth, wherein the system bandwidth comprises transmission bandwidth and guard bandwidth, wherein the unscheduled resource comprises a first unscheduled resource in the transmission bandwidth or a second unscheduled resource in the guard bandwidth, wherein the determining the reserved resource based on the unscheduled resource in the system bandwidth comprises determining the reserved resource based on the unscheduled resource and a first preset resource, wherein the first preset resource is a frequency domain resource whose probability of being scheduled is less than a preset value, wherein the first preset resource comprises a plurality of subcarriers, and wherein a quantity of subcarriers in a spacing between every two adjacent subcarriers in the plurality of subcarriers is not completely equal;
- generating a peak suppressing signal based on the reserved resource;
- and
- adjusting, based on the peak suppressing signal, a peak-to-average power ratio (PAPR) of a to-be-transmitted data signal.
A communication apparatus, comprising:
- at least one processor;
- and
- at least one non-transitory computer readable memory connected to the at least one processor and including computer program code, wherein the at least one non-transitory computer readable memory and the computer program code are configured, with the at least one processor, to cause the communication apparatus to perform at least:
- determining a reserved resource based on an unscheduled resource in system bandwidth, wherein the system bandwidth comprises transmission bandwidth and guard bandwidth, and wherein the unscheduled resource comprises a first unscheduled resource in the transmission bandwidth or a second unscheduled resource in the guard bandwidth, wherein the determining the reserved resource based on the unscheduled resource in the system bandwidth comprises determining the reserved resource based on the unscheduled resource and a first preset resource, wherein the first preset resource is a frequency domain resource whose probability of being scheduled is less than a preset value, wherein the first preset resource comprises a plurality of subcarriers, and wherein a quantity of subcarriers in a spacing between every two adjacent subcarriers in the plurality of subcarriers is not completely equal;
- generating a peak suppressing signal based on the reserved resource;
- and
- adjusting, based on the peak suppressing signal, a peak-to-average power ratio (PAPR) of a to-be-transmitted data signal.
A communication apparatus comprising:
- at least one processor;
- and
- at least one non-transitory computer readable memory connected to the at least one processor and including computer program code, wherein the at least one non-transitory computer readable memory and the computer program code are configured, with the at least one processor, to cause the communication apparatus to perform at least:
- determining a reserved resource based on a resource on a first-type channel in transmission bandwidth, wherein lower-order modulation is used for data or signaling scheduled on the first-type channel, wherein the determining the reserved resource based on the resource on the first-type channel in the transmission bandwidth comprises determining the reserved resource based on the resource on the first-type channel and a second preset resource, wherein the second preset resource comprises a plurality of subcarriers, and wherein a quantity of subcarriers in a spacing between every two adjacent subcarriers in the plurality of subcarriers is not completely equal;
- generating a peak suppressing signal based on the reserved resource;
- and
- adjusting, based on the peak suppressing signal, a peak-to-average power ratio (PAPR) of a to-be-transmitted data signal.
Dependencies are inferred from the claim text.