Signal processing method and communication apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorXinzheng Wang
Life of this patent
Estimating the term…
Abstract
Embodiments of this application disclose a signal processing method and a communication apparatus, to obtain an estimated value of a receive end-direct current (Rx DC) component based on a sampling point of a signal. In this application, for a specified data frame including one or more direct current (DC) subcarriers or a field in the data frame, the signal is sampled in a first time period to obtain at least one first sampling point, the signal is sampled in a second time period after the first time period to obtain at least one second sampling point corresponding to the at least one first sampling point, and then the estimated value of the Rx DC component is obtained based on the at least one first sampling point, the at least one second sampling point, and a normalized frequency offset.
Claims20
A signal processing method, comprising:
- sampling a signal in a first time period, to obtain at least one first sampling point;
- sampling the signal in a second time period, to obtain at least one second sampling point, wherein the at least one second sampling point corresponds to the at least one first sampling point, and the second time period is after the first time period;
- obtaining an estimated value of a receive end-direct current (Rx DC) component based on the at least one first sampling point, the at least one second sampling point, and a normalized frequency offset, wherein the estimated value of the Rx DC component represents an amplitude and a phase of the Rx DC component, and the normalized frequency offset represents a frequency offset of the Rx DC component relative to a direct current (DC) subcarrier;
- and
- compensating the Rx DC component based on the estimated value of the Rx DC component.
An apparatus, comprising:
- one or more processors to execute instructions causing
- a memory having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to:
- sample a signal in a first time period, to obtain at least one first sampling point;
- sample the signal in a second time period, to obtain at least one second sampling point, wherein the at least one second sampling point corresponds to the at least one first sampling point, and the second time period is after the first time period;
- obtain an estimated value of a receive end-direct current (Rx DC) component based on the at least one first sampling point, the at least one second sampling point, and a normalized frequency offset, wherein the estimated value of the Rx DC component represents an amplitude and a phase of the Rx DC component, and the normalized frequency offset represents a frequency offset of the Rx DC component relative to a direct current (DC) subcarrier;
- and
- compensate the Rx DC component based on the estimated value of the Rx DC component.
A non-transitory computer readable medium storing instructions that are executable by a computer, the non-transitory computer readable medium is applied to a first communication apparatus, and the instructions comprise instructions for:
- sampling a signal in a first time period, to obtain at least one first sampling point;
- sampling the signal in a second time period, to obtain at least one second sampling point, wherein the at least one second sampling point corresponds to the at least one first sampling point, and the second time period is after the first time period;
- obtaining an estimated value of a receive end-direct current (Rx DC) component based on the at least one first sampling point, the at least one second sampling point, and a normalized frequency offset, wherein the estimated value of the Rx DC component represents an amplitude and a phase of the Rx DC component, and the normalized frequency offset represents a frequency offset of the Rx DC component relative to a direct current (DC) subcarrier;
- and
- compensating the Rx DC component based on the estimated value of the Rx DC component.
Dependencies are inferred from the claim text.