Hoang Van Nguyen

US Patent:

7443909, Oct 28, 2008

Filed:

Dec 21, 2004

Appl. No.:

11/020055

Inventors:

Hoang Nguyen - Davis CA, US
Jianzhong Zhang - Irving TX, US
Yuanbin Guo - Richardson TX, US
Dennis McCain - Lewisville TX, US
Joe Dowling - Aughnacliffe, IE

Assignee:

Nokia Corporation - Espoo

International Classification:

H04B 1/707

US Classification:

375150, 375316, 375147, 375229, 375232, 375233, 375234, 375235, 375236, 375343

Abstract:

Receiving downlink CDMA signals in a fast-fading environment is facilitated at higher receiver velocities by updating the block-adaptive linear minimum mean square error (LMMSE) downlink CDMA equalizer. The autocorrelation matrix of the observed data is updated by passing block-wise autocorrelation slides through a filter. Each autocorrelation slide is an autocorrelation matrix estimated from a short block of observed data over which the channel can be considered constant. This method achieves a reliable estimate for the autocorrelation matrix when the block size must be small to ensure that the block-wise stationarity assumption holds in cases of fast fading channels. In addition, small block sizes make it possible to satisfy the equalizer delay constraint imposed by hardware and certain voice transmission standards such as CDMA2000 1X where demodulated data must be delivered within only several symbol periods of the signal arrival time.

US Patent:

7586982, Sep 8, 2009

Filed:

May 6, 2003

Appl. No.:

10/431179

Inventors:

Hoang Nguyen - Davis CA, US
Jianzhong Zhang - Irving TX, US
Balaji Raghothaman - Allen TX, US

Assignee:

Nokia Corporation - Espoo

International Classification:

H03H 7/30

US Classification:

375233, 375316, 708323, 370342

Abstract:

Disclosed is a minimum mean square error (MMSE) equalizer and method for single-user detection of a signal received from a downlink code-division multiple access CDMA channel. The equalizer includes a Kalman filter having an input coupled to the received signal for generating a best linear unbiased estimate of a transmitted chip sequence for a single user. A reduced computational complexity Kalman filter embodiment is also disclosed that only periodically updates a Kalman filter prediction error covariance matrix P(k|k−1), a Kalman filter filtering error covariance matrix P(k|k) and the Kalman gain K(k).

US Patent:

20130023919, Jan 24, 2013

Filed:

Sep 24, 2012

Appl. No.:

13/625615

Inventors:

Ryan Olivera - Granite Bay CA, US
Hoang Nguyen - San Jose CA, US

Assignee:

Pulmonx, Inc. - Redwood City CA

International Classification:

A61M 29/00
B65B 1/04

US Classification:

606191, 53235

Abstract:

Devices, methods, and systems are provided for loading an implantable device into a container. One aspect of the loading system contains a loader element with a loading tunnel that is configured to gradually contract an implantable device into a compressed state of reduced size relative to an expanded state as the implantable device travels through the loading tunnel.

US Patent:

20150342610, Dec 3, 2015

Filed:

May 28, 2015

Appl. No.:

14/724400

Inventors:

- Redwood City CA, US
Ryan Olivera - Granite Bay CA, US
Hoang Nguyen - San Jose CA, US

International Classification:

A61B 17/12
A61B 17/128
A61B 17/122

Abstract:

An implantable device for reducing the volume of a lung compartment is disclosed. Aspects of the device includes a first contact element configured to contact with an inner wall of a first airway; a second contact element configured to contact with an inner wall of a second airway; and a compression element configured to apply a compressive force between the first and the second contact elements and to move the first contact element and the second contact element towards each other such that a space between the first airway and the second airway is compressed.