公开(公告)号：US20230223973A1

公开(公告)日：2023-07-13

申请号：US18188047

申请日：2023-03-22

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Carl HARDIN ,  Yehezkel HADID ,  Robert ZOKAIM

IPC: H04B7/06 ,  H04B1/04

CPC classification number: H04B7/0639 ,  H04B1/0475 ,  H04B2001/0425

Abstract: Methods, systems, and devices for wireless communications are described. For example, a transmitting wireless device, such as a user equipment or a base station, may apply a first set of digital pre-distortion (DPD) coefficients to a plurality of antenna elements to form a first transmit beam. The wireless device may determine to switch from using the first transmit beam to using a second transmit beam that is different from the first transmit beam and may apply a second set of DPD coefficients to the plurality of antenna elements to form the second transmit beam, where the second set of DPD coefficients is different from the first set of DPD coefficients. The wireless device may transmit signaling using the second transmit beam based at least in part on applying the second set of DPD coefficients.

公开(公告)号：US20210328609A1

公开(公告)日：2021-10-21

申请号：US17230111

申请日：2021-04-14

Applicant: QUALCOMM Incorporated

Inventor： Igor GUTMAN ,  Yehezkel HADID ,  Carl HARDIN ,  Sang-June PARK ,  Mendel Menachem AIZNER ,  Gideon Shlomo KUTZ

IPC: H04B1/04 ,  H04B1/62

Abstract: Certain aspects of the present disclosure provide techniques for training a digital pre-distorter (DPD) using real-time over-the-air transmissions and receptions by a user equipment (UE). A method for training the DPD generally includes transmitting a signal, generated by a transmitter front end, via a first port; sampling the signal, received over the air, at a second port; performing signal processing cleaning (e.g., synchronization, linear over-the-air channel estimation and equalization); calculating coefficients for a DPD; and configuring the DPD with the coefficients, for use in digitally pre-distorting sub sequent transmissions.