US 12,088,370 B2
Parallel shift estimation for LOS MIMO communication
Pinar Sen, San Diego, CA (US); Seyong Park, San Diego, CA (US); Abdelrahman Mohamed Ahmed Mohamed Ibrahim, 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); 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 Sep. 27, 2022, as Appl. No. 17/954,198.
Prior Publication US 2024/0106503 A1, Mar. 28, 2024
Int. Cl. H04B 7/0456 (2017.01); H01Q 3/26 (2006.01); H04B 7/0417 (2017.01)
CPC H04B 7/046 (2013.01) [H01Q 3/267 (2013.01); H04B 7/0421 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method for wireless communication for line-of-sight Multiple-Input-Multiple-Output (LOS MIMO), by a first device, comprising:
transmitting a first pilot signal to a second device;
receiving a second pilot signal from the second device, wherein the second pilot is at least one of a constant phase pilot or a linear phase ramped pilot; and
estimating a misalignment of the first antenna array of the first device with respect to the second antenna array of the second device, the estimating comprising:
estimating a parallel shift of the first antenna array with respect to the second antenna array; and
compensating for the estimated misalignment of the first antenna array;
wherein the first pilot signal is at least one of a constant phase pilot, or a linear phase ramped pilot for estimating a misalignment of a second antenna array of the second device with respect to a first antenna array of the first device.