Feng Chen

US Patent:

6650624, Nov 18, 2003

Filed:

May 19, 2000

Appl. No.:

09/574558

Inventors:

Thomas J. Quigley - Lawrenceville GA
Jonathan S. Min - Buena Park CA
Lisa V. Denney - Suwanee GA
Henry Samueli - Corona Del Mar CA
Sean F. Nazareth - Anaheim Hills CA
Feng Chen - Irvine CA
Fang Lu - Irvine CA
Christopher R. Jones - Newport Beach CA

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04L 1228

US Classification:

370252, 375222

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

6763032, Jul 13, 2004

Filed:

Feb 10, 2000

Appl. No.:

09/501892

Inventors:

Theodore F. Rabenko - Duluth GA
James C. H. Thi - Irvine CA
Thomas J. Quigley - Lawrenceville GA
Lisa V. Denney - Suwanee GA
Jonathan S. Min - Buena Park CA
Christopher R. Jones - Newport Beach CA
Henry Samueli - San Juan Capistrano CA
Fang Lu - Irvine CA
Feng Chen - Irvine CA
Sean F. Nazareth - Anaheim Hills CA

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 7212

US Classification:

370442, 370488

Abstract:

A method for communicating information is disclosed wherein a time slot is allocated in a time division multiple access system for a transmission from a subscriber to a headend. Synchronization of a clock of the subscriber with respect to a clock of the headend is enhanced using a message transmitted from the headend to the subscriber which is indicative of an error in a subscriber transmission time with respect to the time slot. A feedback loop process is used to determine at least one of fractional symbol timing correction and carrier phase correction of a transmission from the subscriber to the headend. Filter coefficients are generated at the headend from a ranging signal transmitted from the subscriber to the headend and transmitting the filter coefficients from the headend to the subscriber, the filter coefficients being used by the subscriber to compensate for noise in a transmission from the subscriber to the headend.

US Patent:

6961314, Nov 1, 2005

Filed:

Aug 25, 2000

Appl. No.:

09/648895

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04L012/28

US Classification:

370252, 370352, 375222

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

6965616, Nov 15, 2005

Filed:

Oct 6, 2000

Appl. No.:

09/684712

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J001/00

US Classification:

370480, 370497, 375222

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

7103065, Sep 5, 2006

Filed:

Nov 16, 2000

Appl. No.:

09/714713

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J 3/16
H04J 3/24

US Classification:

370465, 370474

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

7120123, Oct 10, 2006

Filed:

Nov 9, 2000

Appl. No.:

09/710238

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J 1/16

US Classification:

370252, 375222

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

7139283, Nov 21, 2006

Filed:

Feb 9, 2001

Appl. No.:

09/780179

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J 3/26

US Classification:

370432, 370468, 725146

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

7190704, Mar 13, 2007

Filed:

Feb 17, 2004

Appl. No.:

10/780362

Inventors:

Theodore F. Rabenko - Duluth GA, US
James C. H. Thi - Irvine CA, US
Thomas J. Quigley - Lawrenceville GA, US
Lisa V. Denney - Suwanee GA, US
Jonathan S. Min - Buena Park CA, US
Christopher R. Jones - Newport Beach CA, US
Henry Samueli - San Juan Capistrane CA, US
Fang Lu - Irvine CA, US
Feng Chen - Irvine CA, US
Sean F. Nazareth - Anaheim Hills CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J 3/06

US Classification:

370508, 370350, 375229

Abstract:

A method for communicating information is disclosed wherein a time slot is allocated in a time division multiple access system for a transmission from a subscriber to a headend. Synchronization of a clock of the subscriber with respect to a clock of the headend is enhanced using a message transmitted from the headend to the subscriber which is indicative of an error in a subscriber transmission time with respect to the time slot. A feedback loop process is used to determine at least one of fractional symbol timing correction and carrier phase correction of a transmission from the subscriber to the headend. Filter coefficients are generated at the headend from a ranging signal transmitted from the subscriber to the headend and transmitting the filter coefficients from the headend to the subscriber, the filter coefficients being used by the subscriber to compensate for noise in a transmission from the subscriber to the headend.