Pui Wing Wu

US Patent:

6798735, Sep 28, 2004

Filed:

Oct 20, 1999

Appl. No.:

09/421835

Inventors:

Marcos Tzannes - Lexington MA
George Kechriotis - Arlington MA
Pui Wu - Malden MA

Assignee:

Aware, Inc. - Bedford MA

International Classification:

H04J 1100

US Classification:

370207, 370252, 370468

Abstract:

Data is distributed among the channels of an asymmetric data subscriber loop (ADSL) communications system in accordance with an adaptive algorithm which from time to time measures the signal to noise ratio of the various channels and finds a margin for each channel dependent on achievement (where possible) of a given bit error rate and a desired data transmission rate. The margin distribution is achieved by augmenting the constellation signal to noise ratio to enhance computational efficiency and allow redetermination of bit allocation tables during transmission as necessary. Pairs of bit allocation tables are maintained at the transmitter and receiver and one table of each pair at the transmitter and receiver is updated while the other pair is in use for controlling communication.

US Patent:

7817532, Oct 19, 2010

Filed:

Jun 7, 2006

Appl. No.:

11/422810

Inventors:

Marcos Tzannes - Orinda CA, US
George Kechriotis - Arlington MA, US
Pui Wu - Chelmsford MA, US

International Classification:

H04J 11/00

US Classification:

370207

Abstract:

Data is distributed among the channels of an asynchronous data subscriber loop (ADSL) communications system in accordance with an adaptive algorithm which from time to time measures the signal to noise ratio of the various channels and finds a margin for each channel dependent on achievement (where possible) of a given bit error rate and a desired data transmission rate. The margin distribution is achieved by augmenting the constellation signal to noise ratio to enhance computational efficiency and allow redetermination of bit allocation tables during transmission as necessary. Pairs of bit allocation tables are maintained at the transmitter and receiver and one table of each pair at the transmitter and receiver is updated while the other pair is in use for controlling communication.

US Patent:

20050083972, Apr 21, 2005

Filed:

Feb 2, 2004

Appl. No.:

10/768138

Inventors:

Marcos Tzannes - Orinda CA, US
George Kechriotis - Arlington MA, US
Pui Wu - Malden MA, US

Assignee:

Aware, Inc. - Bedford MA

International Classification:

H04J003/16

US Classification:

370468000

Abstract:

Data is distributed among the channels of an asynchronous data subscriber loop (ADSL) communications system in accordance with an adaptive algorithm which from time to time measures the signal to noise ratio of the various channels and finds a margin for each channel dependent on achievement (where possible) of a given bit error rate and a desired data transmission rate. The margin distribution is achieved by augmenting the constellation signal to noise ratio to enhance computational efficiency and allow redetermination of bit allocation tables during transmission as necessary. Pairs of bit allocation tables are maintained at the transmitter and receiver and one table of each pair at the transmitter and receiver is updated while the other pair is in use for controlling communication.

US Patent:

60727799, Jun 6, 2000

Filed:

Jun 12, 1997

Appl. No.:

8/873421

Inventors:

Marcos Tzannes - Lexington MA
George Kechriotis - Arlington MA
Pui Wu - Malden MA

Assignee:

Aware, Inc. - Bedford MA

International Classification:

H04B 346
H04J 314
H04J 316

US Classification:

370252

Abstract:

Data is distributed among the channels of an asymmetric data subscriber loop (ADSL) communications system in accordance with an adaptive algorithm which from time to time measures the signal to noise ratio of the various channels and finds a margin for each channel dependent on achievement (where possible) of a given bit error rate and a desired data transmission rate. The margin distribution is achieved by augmenting the constellation signal to noise ratio to enhance computational efficiency and allow redetermination of bit allocation tables during transmission as necessary. Pairs of bit allocation tables are maintained at the transmitter and receiver and one table of each pair at the transmitter and receiver is updated while the other pair is in use for controlling communication.