US 12,088,355 B2
Reduction of emulated channel count for phased-array systems through angle-of-arrival processing
Jeremy Mielens, Corpus Christi, TX (US); John Ammerman, Spokane, WA (US); Aljosa Vrancic, Lexington, MA (US); and Andrew Lynch, Austin, TX (US)
Assigned to National Instruments Corporation, Austin, TX (US)
Filed by NATIONAL INSTRUMENTS CORPORATION, Austin, TX (US)
Filed on Oct. 10, 2022, as Appl. No. 18/045,354.
Claims priority of provisional application 63/257,265, filed on Oct. 19, 2021.
Prior Publication US 2023/0123930 A1, Apr. 20, 2023
Int. Cl. H04B 17/16 (2015.01); H04B 17/00 (2015.01); H04B 17/391 (2015.01)
CPC H04B 17/0087 (2013.01) [H04B 17/0085 (2013.01); H04B 17/16 (2015.01); H04B 17/3912 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A method for emulating a channel for wireless communications between a first system-under-test (SUT) and a second SUT, wherein the first SUT includes a first antenna array comprising a plurality of first SUT antenna elements, and wherein the second SUT includes a second antenna array comprising a plurality of second SUT antenna elements, the method comprising:
from the plurality of first SUT antenna elements, receiving a plurality of respective wireless signals;
for each of a plurality of respective paths of the emulated channel:
for each of the plurality of first SUT antenna elements:
applying a respective first phase shift and a respective first gain modification to the respective wireless signal received from the respective first SUT antenna element;
performing a summation of the first phase shifted and first gain modified wireless signals to produce an aggregate transmitted wireless signal;
applying a path-specific signal modification to the aggregate transmitted wireless signal, wherein the path-specific signal modification emulates channel effects of the respective path to produce a respective path-specific aggregate wireless signal;
for each of the plurality of second SUT antenna elements:
applying a respective second phase shift and a respective second gain modification to the respective path-specific aggregate wireless signal; and
for each of the plurality of second SUT antenna elements:
performing a summation of the second phase shifted and second gain modified path-specific aggregate wireless signals for each of the plurality of paths to produce a respective emulated wireless signal; and
outputting the emulated wireless signals to respective ones of the plurality of second SUT antenna elements.