公开(公告)号：US20250070830A1

公开(公告)日：2025-02-27

申请号：US18454058

申请日：2023-08-22

Applicant: QUALCOMM Incorporated

Inventor： Tzu-Hsuan CHOU ,  Jing JIANG ,  Jing SUN ,  Yu ZHANG

IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) transmits a signal in accordance with a shortened time domain precoding filter for multi-antenna precoding. In some examples, a UE may precode the signal in accordance with a subset of time domain precoding taps. The UE may select the subset of time domain precoding taps from a set of time domain precoding taps in accordance with an absolute value of each of the set of time domain precoding taps. The UE may transmit the signal in accordance with the precoding. In other examples, the UE may select a transmit channel shortener to apply to a channel. The UE may select the transmit channel shortener based on a channel energy of a shortened channel that is associated with the transmit channel shortener. The UE may transmit the signal via the shortened channel.