Yu U Liu

US Patent:

7968701, Jun 28, 2011

Filed:

Aug 18, 2008

Appl. No.:

12/193600

Inventors:

Yu Liu - Brooklyn NY, US
Liang Ding - Ithaca NY, US
Ruojie Sha - Pomona NY, US
Nadrian Seeman - New York NY, US
James Canary - New York NY, US

Assignee:

New York University - New York NY

International Classification:

C07H 21/00

US Classification:

536 253, 536 221, 536 231

Abstract:

The present invention provides a polyribonucleoside ladder copolymer molecule of general formula (I).

US Patent:

20230067500, Mar 2, 2023

Filed:

Aug 30, 2022

Appl. No.:

17/823491

Inventors:

- Suwon-si, KR
Yu Liu - Allen TX, US
Junmo Sung - Allen TX, US
Gang Xu - Allen TX, US
Jianzhong Zhang - Dallas TX, US

International Classification:

H04B 7/06
H04B 7/0417
H04B 17/11

Abstract:

A method includes receiving, by a base station, a sounding reference signal (SRS) symbol from a user equipment (UE). The method also includes estimating, by the base station, an uplink (UL) channel from the UE to a full dimensional multiple-input multiple-output (FD-MIMO) base station base band based on the received SRS symbol. The method also includes receiving, by the base station from the UE, an estimate of a downlink (DL) channel from the FD-MIMO base station base band to the UE. The method also includes performing, by the base station, a joint calibration by applying one or more calibration algorithms using channel state information (CSI) of the UL channel and the DL channel.