公开(公告)号：US20240113919A1

公开(公告)日：2024-04-04

申请号：US18472083

申请日：2023-09-21

Applicant: QUALCOMM Incorporated

Inventor： Kumar PRATIK ,  Arash BEHBOODI ,  Pouriya SADEGHI ,  Tharun Adithya SRIKRISHNAN ,  Alexandre PIERROT ,  Joseph Binamira SORIAGA ,  Gautham HARIHARAN ,  Supratik BHATTACHARJEE

IPC: H04L25/02 ,  H04L5/00

CPC classification number: H04L25/0254 ,  H04L5/0048 ,  H04L25/0256

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may receive an assignment of a set of resources associated with a channel, where the set of resources includes a first subset of resources allocated for data transmission and a second subset of resources allocated for a reference signal. The wireless device may generate, from the reference signal in accordance with a minimum mean square estimation (MMSE) operation, a first set of multiple channel estimations per layer of the channel. The wireless device may generate, in accordance with a nonlinear two-dimensional interpolation of the channel, a second set of multiple channel estimations per layer of the channel and may perform a refinement operation utilizing the estimations to generate a channel estimation associated with multiple layers.

公开(公告)号：US20230417870A1

公开(公告)日：2023-12-28

申请号：US17808745

申请日：2022-06-24

Applicant: QUALCOMM Incorporated

Inventor： Tharun Adithya SRIKRISHNAN ,  Intae KANG ,  Supratik BHATTACHARJEE ,  Christos KOMNINAKIS ,  Michael Lee MCCLOUD ,  Gautham HARIHARAN ,  Minkui LIU ,  Gary John BALLANTYNE

IPC: G01S7/40 ,  G01S13/42

CPC classification number: G01S7/4008 ,  G01S13/42

Abstract: Certain aspects of the present disclosure provide techniques for identifying a minimal, or at least reduced, set of representative calibration paths in radio frequency (RF) circuits and calibrating other calibration paths based on calibration codes used for the representative calibration paths. An example method generally includes receiving a calibration data set including measurements associated with each calibration path of a plurality of calibration paths in an RF circuit. Based on a clustering model and the calibration data set, a plurality of calibration clusters is generated. From each respective calibration cluster of the plurality of calibration clusters, a respective representative calibration path for is selected for the respective calibration cluster. Generally, calibration codes generated for the representative calibration path are applicable to other calibration paths in the calibration cluster. A lookup table is generated associating a respective calibration path with other calibration paths in each respective calibration cluster.