US 12,119,903 B2
Reciprocal geometric precoding
Ronny Hadani, San Jose, CA (US); and Shachar Kons, San Jose, CA (US)
Assigned to Cohere Technologies, Inc., San Jose, CA (US)
Filed by Cohere Technologies, Inc., San Jose, CA (US)
Filed on Aug. 28, 2023, as Appl. No. 18/456,730.
Application 18/456,730 is a continuation of application No. 17/596,233, granted, now 11,742,909, previously published as PCT/US2020/036349, filed on Jun. 5, 2020.
Claims priority of provisional application 62/857,757, filed on Jun. 5, 2019.
Prior Publication US 2023/0412219 A1, Dec. 21, 2023
Int. Cl. H04B 7/0456 (2017.01); H04B 7/024 (2017.01); H04B 7/0452 (2017.01); H04W 52/14 (2009.01)
CPC H04B 7/0456 (2013.01) [H04B 7/024 (2013.01); H04B 7/0452 (2013.01); H04W 52/143 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wireless communication method, comprising:
determining, by a network device, uplink power allocations assigned to each user device of multiple user devices;
estimating, by the network device, a channel response for each user device of multiple user devices based on a corresponding uplink reference signal transmission received from the each user device,
computing, for the each user device, a covariance matrix based on a corresponding channel response,
determining a maximum eigenvector of an uplink signal to interference and noise ratio (SINR) matrix for the each user device;
computing, from the uplink SINR matrix, a downlink cross-interference matrix for the each user device;
selecting, from the downlink cross-interference matrix for the each user device, a selected vector that maximizes a selected criterion for the each user device,
determining, from the selected vectors of the multiple user devices, a downlink power allocation for the each user device of multiple user devices.