US 12,068,814 B2
Techniques for estimating misalignment between antenna arrays
Seyong Park, San Diego, CA (US); Pinar Sen, San Diego, CA (US); Renqiu Wang, San Diego, CA (US); Peter Gaal, San Diego, CA (US); Naga Bhushan, San Diego, CA (US); Krishna Kiran Mukkavilli, San Diego, CA (US); Muhammad Sayed Khairy Abdelghaffar, San Jose, CA (US); Hwan Joon Kwon, San Diego, CA (US); and Tingfang Ji, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jan. 19, 2023, as Appl. No. 18/156,690.
Prior Publication US 2024/0250724 A1, Jul. 25, 2024
Int. Cl. H04B 7/0456 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/0456 (2013.01) [H04B 7/063 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a first wireless device, comprising:
a processor;
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
transmit one or more reference signals to a second wireless device using a first antenna array at the first wireless device and in accordance with a first precoder matrix;
receive, from the second wireless device based at least in part on the one or more reference signals, a feedback message indicating an estimated rotational misalignment, an estimated spatial misalignment, or both, between the first antenna array at the first wireless device and a second antenna array at the second wireless device; and
transmit a message to the second wireless device in accordance with a second precoder matrix that is modified relative to the first precoder matrix based at least in part on the estimated rotational misalignment, the estimated spatial misalignment, or both.