US 12,476,680 B2
High spatial resolution MIMO precoding for uplink communication
Tzu-Han Chou, San Jose, CA (US); and Jiann-Ching Guey, Hsinchu (TW)
Assigned to MEDIATEK SINGAPORE PTE. LTD., Singapore (SG)
Appl. No. 18/556,707
Filed by MediaTek Singapore Pte. Ltd., Singapore (SG)
PCT Filed Jun. 16, 2022, PCT No. PCT/CN2022/099140
§ 371(c)(1), (2) Date Oct. 23, 2023,
PCT Pub. No. WO2022/267972, PCT Pub. Date Dec. 29, 2022.
Claims priority of provisional application 63/212,744, filed on Jun. 21, 2021.
Prior Publication US 2024/0223247 A1, Jul. 4, 2024
Int. Cl. H04B 7/0456 (2017.01); H04B 7/0404 (2017.01)
CPC H04B 7/0486 (2013.01) [H04B 7/0404 (2013.01); H04B 7/0456 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) with N transmit (Tx) antenna elements in a wireless network, wherein N is an integer value, the method comprising:
receiving precoding information from a base station;
constructing a full-rank complex Hadamard matrix (CHM) of order N using the precoding information;
precoding an uplink signal using a precoding matrix composed of one or more columns of the full-rank CHM; and
transmitting the precoded uplink signal to the base station.