Dianne E Egnor

6999498, Feb 14, 2006

Aug 7, 2003

10/482598

Diane G. Mills - Wilmington MA, US
Geoff S. Edelson - Andover MA, US
Dianne E. Egnor - Somerville MA, US

BAE Systems Information and Electronic Systems Integration INC. - Nashua NH

H04L 27/30

375133, 375136, 375349, 455303

Techniques for multiple access differential frequency-hopped spread spectrum (MA-DFHSS) aided by multiuser detection (MUD) are disclosed. An initial DFH decoding is performed to provide data estimates for each user represented in a received co-channel signal. Interference cancellation is then performed using MUD, thereby providing an interference-cancelled signal. Data estimates remaining are then re-decoded. Iteration on the interference cancellation and re-decoding can be carried out to satisfy a particular rule of iteration, although iteration is not always necessary. The final decoded signal can then be provided to its destination.

7236546, Jun 26, 2007

Sep 10, 2003

10/659567

Dianne E Egnor - Somerville MA, US
Robert B MacLeod - Nashua NH, US

Bae Systems Information and Electronic Systems Integration Inc. - Nashua NH

H03D 1/00
H04L 27/06

375341, 375262, 375340, 714786, 714794, 714795

A multiple access processing system for a plurality of users employing a multiuser detector processing partial blocks of data within a window. The multiuser detector processes the data for all users within a processing window and is interrupted at successive frame boundaries. Once an entire block is processed by the MUD, the blocks for that user are decoded and the processing continues.

7376171, May 20, 2008

Apr 19, 2004

10/827462

Diane G. Mills - Wilmington MA, US
Geoffrey S. Edelson - Andover MA, US
Dianne E. Egnor - Nashua NH, US

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

H04L 27/30

375133, 375136, 375349, 455303

Techniques for multiple access differential M-ary coding applications that can be optionally aided by multiuser detection (MUD) are disclosed. An initial hopped feature decoding is performed to provide data estimates for each user represented in a received co-channel signal. Interference cancellation can then be performed using MUD, thereby providing an interference-cancelled signal. Data estimates remaining are then re-decoded. Iteration on the interference cancellation and re-decoding can be carried out to satisfy a particular rule of iteration, although iteration is not always necessary. The final decoded signal can then be provided to its destination.

6831574, Dec 14, 2004

Oct 3, 2003

10/678203

Diane G. Mills - Wilmington MA
Robert B. MacLeod - Nashua NH
Thomas P. McElwain - Merrimack NH
Dianne E. Egnor - Nashua NH

BAE Systems Information and Electronic Systems Integration INC - Nashua NH

H03M 700

341 50, 714786, 714752

A Turbo multi-user detector (MUD) processing system in multiple access communications channels that decreases the likelihood of improper decoding of the final values of interest, thereby allowing for a reduction in the number of iterations performed and lowers complexity without negatively impacting performance. The present invention comprises a multi-user detector serially concatenated to two decoder sections in such a manner that data flows iteratively from the MUD and to each detector stage and back to the MUD to correct for errors.