Invention Grant
- Patent Title: Linear filter separation for digital pre-distortion (DPD) in wireless communication apparatus
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Application No.: US16376239Application Date: 2019-04-05
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Publication No.: US10447244B1Publication Date: 2019-10-15
- Inventor: Hao Zhou , Kapil Rai
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Qualcomm Inc (DL)
- Main IPC: H03H17/02
- IPC: H03H17/02 ; H04B1/62 ; H04B1/04 ; H03F3/24

Abstract:
This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for configuring components of transmission circuitry. In one aspect, a first set of linear kernels and a first set of nonlinear kernels associated with a composite digital pre-distortion (DPD) kernel design is determined based on a first iteration of a DPD kernel analysis process. The first set of linear kernels is separated from the first set of nonlinear kernels according to a first iteration of a linear filter separation process. A final set of linear kernels and a final set of nonlinear kernels are determined based on one or more additional iterations of the DPD kernel analysis process and the linear filter separation process. A pre-DPD filter for the transmission circuitry is configured using a final set of filter coefficients derived based on the final set of linear kernels.
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