Qing E Li

US Patent:

7558591, Jul 7, 2009

Filed:

Oct 12, 2004

Appl. No.:

10/963046

Inventors:

Qing Li - Bridgewater NJ, US
William Reinisch - New York NY, US
Yingxue Li - Bethlehem PA, US
Haim Harel - New York NY, US

Assignee:

Magnolia Broadband Inc. - Bedminster NJ

International Classification:

H04B 7/00
H04Q 7/20

US Classification:

455522, 455 69, 455 6711, 4551151

Abstract:

Determining a power control group boundary includes receiving a plurality of samples having power control groups, where each power control group corresponds to a time period. The following are repeated for a predetermined number of iterations: a window is set at a point of a sample; a number of power control bits within the window at the point is determined; and the window is moved to a point of a next sample. A point at which the window has the largest number of power control bits is identified. A power control group boundary is determined in accordance with the window at the identified point.

US Patent:

7869543, Jan 11, 2011

Filed:

Mar 13, 2008

Appl. No.:

12/048013

Inventors:

Ajit Kumar Reddy - Matawan NJ, US
Qing Li - Princeton Junction NJ, US
Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04K 1/02
H04B 1/04
H04L 25/49

US Classification:

375296, 375297, 4551143, 455126

Abstract:

A system is provided for processing a communication signal including a baseband amplitude component and a baseband phase component. The system includes an amplitude predictor configured for closed-loop pre-distortion of a baseband amplitude component, an amplitude lookup table configured for open-loop pre-distortion of the baseband amplitude component, and an amplitude interpolator configured to build up the amplitude lookup table during a closed-loop calibration period. The system also includes a phase predictor configured for closed-loop pre-distortion of a baseband phase component, a phase lookup table configured for open-loop pre-distortion of the baseband phase component, and a phase interpolator configured to build up the phase lookup table during a closed-loop calibration period.

US Patent:

7889810, Feb 15, 2011

Filed:

Dec 15, 2006

Appl. No.:

11/639999

Inventors:

Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US
Qing Li - Bridgewater NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04K 1/02
H04L 25/03
H04L 25/49
H04L 27/00

US Classification:

375296, 375295

Abstract:

A method and apparatus for a nonlinear feedback control system is disclosed, such as for electrical and electronic systems, for pre-distorting a nonlinear device. A nonlinear feedback control system includes a nonlinear device having a first input and a first output. A detection stage is in communication with the first output of the nonlinear device. A derivation stage is in communication with the detection stage, and the derivation stage is in communication with the first input of the nonlinear device.

US Patent:

8009765, Aug 30, 2011

Filed:

Mar 13, 2008

Appl. No.:

12/048022

Inventors:

Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US
Qing Li - Princeton Junction NJ, US
Ajit Kumar Reddy - Matawan NJ, US
Eoin Carey - Cork, IE

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04K 1/02

US Classification:

375297

Abstract:

A digital polar transmitter includes a baseband processor configured to receive an input signal and to convert the input signal into a baseband amplitude component and a baseband phase component. The transmitter also includes a phase modulator in communication with the baseband processor. The phase modulator is configured to modulate an RF carrier signal based on the phase component and to generate a phase-modulated RF carrier signal. A power amplifier is provided in communication with the baseband processor and the phase modulator. The power amplifier is configured to amplify the phase-modulated RF carrier signal based on the baseband amplitude component and to generate an amplified RF signal. The transmitter also includes a digital feedback loop in communication with the power amplifier and the baseband processor. The digital feedback loop is configured to detect the amplified RF signal and to provide a digital amplitude feedback signal and a detected phase feedback signal to the baseband processor.

US Patent:

8233852, Jul 31, 2012

Filed:

Apr 4, 2008

Appl. No.:

12/098290

Inventors:

Walid K. M. Ahmed - Tinton Falls NJ, US
Eoin Carey - Cork, IR
Qing Li - Princeton Junction NJ, US
Ajit K. Reddy - Matawan NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H03C 1/62

US Classification:

4551151, 455 631, 455 6713, 455 6714, 455 6716, 4551143, 4551271, 4551272, 455126, 375296, 375297

Abstract:

An apparatus may include a non-linear module, a control module, and a calibration module. The non-linear module produces an output signal from an input signal. The control module selects, upon an occurrence of a calibration condition, a calibration operation from two or more calibration operations. Each of the two or more calibration operations may generate one or more correction values for the non-linear module. Further, each of the calibration operations produces the input signal from a pre-input signal. This selected calibration operation is performed by the calibration module. The two or more calibration operations include a first calibration operation and a second calibration operation. The first calibration operation produces the input signal from the pre-input signal according to a predictive technique. The second calibration operation produces the input signal from the pre-input signal according to a non-predictive technique.

US Patent:

8208583, Jun 26, 2012

Filed:

Dec 16, 2010

Appl. No.:

12/969843

Inventors:

Ajit Kumar Reddy - Matawan NJ, US
Qing Li - Princeton Junction NJ, US
Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04L 25/03

US Classification:

375297

Abstract:

A system is provided for processing a communication signal including a baseband amplitude component and a baseband phase component. The system includes an amplitude predictor configured for closed-loop pre-distortion of a baseband amplitude component, an amplitude lookup table configured for open-loop pre-distortion of the baseband amplitude component, and an amplitude interpolator configured to build up the amplitude lookup table during a closed-loop calibration period. The system also includes a phase predictor configured for closed-loop pre-distortion of a baseband phase component, a phase lookup table configured for open-loop pre-distortion of the baseband phase component, and a phase interpolator configured to build up the phase lookup table during a closed-loop calibration period.

US Patent:

20220394657, Dec 8, 2022

Filed:

Jun 3, 2021

Appl. No.:

17/338491

Inventors:

- San Diego CA, US
Kapil GULATI - Belle Mead NJ, US
Gabi SARKIS - San Diego CA, US
Qing LI - Princeton Junction NJ, US

International Classification:

H04W 64/00
H04W 8/24
H04L 5/00

Abstract:

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives, from a network entity, a configuration message including at least one information element indicating whether the UE is permitted to initiate sidelink-based positioning sessions, and transmits a positioning reference signal (PRS) request to at least one UE based on the at least one information element indicating that the UE is permitted to initiate sidelink-based positioning sessions.

US Patent:

20220386271, Dec 1, 2022

Filed:

May 28, 2021

Appl. No.:

17/334252

Inventors:

- San Diego CA, US
Qing LI - Princeton Junction NJ, US
Hong CHENG - Basking Ridge NJ, US

International Classification:

H04W 64/00
H04W 24/10
H04L 5/00

Abstract:

Certain aspects of the present disclosure provide techniques for sensing window configuration for sidelink based ranging and positioning. For example, during sidelink-based ranging or sensing, a user equipment (UE) may determine the relative distance or position with other UEs. This may be realized by a UE broadcasting a wideband position reference signal (PRS) on an unlicensed band and measuring the round-trip time associated with a peer UE's PRS. The measurement accounts for a PRS transmission time transmitted by each UE. The UE may apply a sensing window to determine whether a neighboring UE has reserved PRS transmission times. The present disclosure provides methods and techniques for a network entity to configure a sensing window in a UE so that the UE may determine, during the sensing window, whether neighboring UEs have reserved a PRS transmission time.