Mark James Dapper

US Patent:

6366585, Apr 2, 2002

Filed:

Sep 15, 1999

Appl. No.:

09/396306

Inventors:

Mark J. Dapper - Cincinnati OH
Michael J. Geile - Batavia OH
Terrance Hill - West Chester OH

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H04L 1256

US Classification:

370409, 370453, 370474, 455562

Abstract:

A communication system is described. The communication system includes a distribution network and a head end terminal adapted to transmit downstream control data and downstream telephony information in a first frequency bandwidth over the distribution network and adapted to receive upstream telephony information and upstream control data in a second frequency bandwidth over the distribution network. In addition the communication system includes a plurality of service units, each service unit operatively connected to the distribution network for upstream transmission of upstream telephony information and upstream control data in the second frequency bandwidth and for receipt of downstream control data and downstream telephony information in the first frequency bandwidth. The head end terminal includes a detector that detects at least one local transmission characteristic of a service unit and generates an adjustment command as a function of the detected at least one local transmission characteristic for transmittal. Each service unit adjusts the at least one local transmission characteristic when an adjustment command is received from the head end terminal in the downstream control data to the service unit.

US Patent:

6434583, Aug 13, 2002

Filed:

Sep 15, 1999

Appl. No.:

09/396650

Inventors:

Mark J. Dapper - Cincinnati OH
Michael J. Geile - Loveland OH
Terrance J. Hill - Fairfield OH
Harold A. Roberts - Eden Prairie MN
Brian D. Anderson - Plymouth MN
Jeffrey Brede - Eden Prairie MN
Mark S. Wadman - Eden Prairie MN
Robert J. Kirscht - Savage MN
James J. Herrmann - Eagan MN
Michael J. Fort - Eagan MN
Steven P. Buska - Minnetonka MN
Jeff Solum - Bloomington MN
Debra Lea Enfield - Chaska MN
Darrell Berg - Bloomington MN
Thomas Smigelski - Lake Zurich IL
Thomas C. Tucker - Chapel Hill NC
Joe Hall - Bloomington MN
John M. Logajan - Arden Hills MN
Somvay Boualouang - Bloomington MN
Heng Lou - Bloomington MN
Mark D. Elpers - Elk River MN
Matt Downs - Bloomington MN
Tammy Ferris - Bloomington MN
Adam Opoczynski - Plano TX
David S. Russell - Minneapolis MN
Calvin G. Nelson - Shorewood MN
Niranjan R. Samant - Middletown CT
Joseph F. Chiappetta - Trumbull CT
Scott Sarnikowski - San Jose CA

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

G06F 1714

US Classification:

708409, 708622

Abstract:

A apparatus for providing a Fast Fourier Transform (FFT) and an inverse FFT is provided. The apparatus comprises a radix-N core. The radix-N core includes at least N multipliers. The radix-N core also includes a twiddle-factor lookup table that stores complex twiddle-factors. The twiddle-factor lookup table is coupled to one input of each of the multipliers. The radix-N core also includes a conversion random access memory (RAM) that stores transform points. The conversion RAM is coupled to another input of each of the multipliers. The radix-N core also includes an array of at least N-times-N adder-subtracter-accumulators.

US Patent:

6487405, Nov 26, 2002

Filed:

Sep 15, 1999

Appl. No.:

09/396309

Inventors:

Mark J. Dapper - Cincinnati OH

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H04Q 720

US Classification:

455424, 370342, 3703951, 370401, 341100, 235380, 379 562, 725105

Abstract:

A method for controlling a plurality of service units in a telecommunications system with a multi-carrier transmission scheme is provided. Specifically, in one embodiment, the method includes broadcasting control signals for the service units over a plurality of control channels distributed in a number of subbands of a frequency bandwidth. The method further includes identifying the service unit to use the control signal with an identifier.

US Patent:

6535715, Mar 18, 2003

Filed:

Sep 15, 1999

Appl. No.:

09/396308

Inventors:

Mark J. Dapper - Cincinnati OH
Michael J. Geile - Batavia OH

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H04J 1100

US Classification:

455 31, 370210, 370484

Abstract:

A communication system is described. The communication system includes a distribution network between a head end terminal and at least one remote unit. The head end terminal receives upstream telephony and control data modulated on a plurality of orthogonal carriers in a frequency bandwidth over the distribution network. The head end terminal includes a polyphase filter that filters at least the upstream telephony data to provide ingress protection for the modulated orthogonal carriers. The communication further includes a service unit multicarrier modem associated with the at least one remote unit and operatively connected to the distribution network for modulating at least upstream telephony information on at least one carrier orthogonal at the head end terminal to at least one other carrier in the frequency bandwidth.

US Patent:

6594322, Jul 15, 2003

Filed:

Sep 15, 1999

Appl. No.:

09/396843

Inventors:

Mark J. Dapper - Cincinnati OH
Michael J. Geile - Batavia OH
Terrance Hill - West Chester OH

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H03D 300

US Classification:

375330, 375344

Abstract:

A method of distributed loop control is described. The method includes receiving at a service unit downstream control and telephony information modulated on orthogonal carriers in a first frequency bandwidth over a distribution network. The method further includes transmitting from the service unit upstream telephony information and control data modulated on orthogonal carriers in a second frequency bandwidth over the distribution network. In addition, the method includes adjusting at least one local transmission characteristic when an adjustment command from a head end terminal is received in the downstream control data. The downstream control data is based on prior upstream transmissions from the service unit.

US Patent:

6606351, Aug 12, 2003

Filed:

Sep 15, 1999

Appl. No.:

09/396914

Inventors:

Mark J. Dapper - Cincinnati OH
Michael J. Geile - Batavia OH

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H04L 516

US Classification:

375222

Abstract:

A method for reducing ingress in orthogonal carriers is described. The method includes receiving a plurality of orthogonal carriers in an upstream frequency bandwidth and polyphase filtering the plurality of orthogonal carriers into a first and second plurality of carrier bands.

US Patent:

6662367, Dec 9, 2003

Filed:

Jan 11, 2002

Appl. No.:

10/044745

Inventors:

Mark J. Dapper - Cincinnati OH
Michael J. Geile - Batavia OH

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H04M 7173

US Classification:

725105, 725106, 725114, 725126, 725129, 725131, 455 301, 455 305, 370409, 370478, 370484, 379 562, 375346, 341100

Abstract:

A head end terminal for a communication system using multicarrier modulation is described. The head end terminal includes a multicarrier modem adapted to receive upstream signals and to demodulate the upstream signals modulated on a plurality of orthogonal carriers in a first frequency bandwidth, the multicarrier modem including a polyphase filter adapted to selectively filter the received upstream signal to provide protection against narrowband ingress for the modulated orthogonal carriers and allow for scalable bandwidth usage in the upstream transmission, and a controller operatively connected to the multicarrier modem for controlling receipt of signals.

US Patent:

7881181, Feb 1, 2011

Filed:

Oct 29, 2007

Appl. No.:

11/927428

Inventors:

Mark J. Dapper - Cincinnati OH, US
Michael J. Geile - Loveland OH, US
Terrance J. Hill - Fairfield OH, US
Harold A. Roberts - Eden Prairie MN, US
Brian D. Anderson - Plymouth MN, US
Jeffrey Brede - Eden Prairie MN, US
Mark S. Wadman - Plano TX, US
Robert J. Kirscht - Savage MN, US
James J. Herrmann - Eagan MN, US
Michael J. Fort - Eagan MN, US
Steven P Buska - Minnetonka MN, US
Jeff Solum - Bloomington MN, US
Debra Lea Enfield - Chaska MN, US
Darrell Berg - Bloomington MN, US
Thomas Smigelski - Lake Zurich IL, US
Thomas C Tucker - Chapel Hill NC, US
Joe Hall - Bloomington MN, US
John M. Logajan - Arden Hills MN, US
Somvay Boualouang - Bloomington MN, US
Heng Lou - Bloomington MN, US
Mark Elpers - Elk River MN, US
Matt Downs - Bloomington MN, US
Tammy Ferris - Bloomington MN, US
Adam Opoczynski - Plano TX, US
David S Russell - Minneapolis MN, US
Calvin G Nelson - Shorewood MN, US
Niranjan R Samant - Midletown CT, US
Joseph F Chiappetta - Trumbull CT, US
Scott Sarnikowski - Plymouth MN, US

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H04J 11/00

US Classification:

370206, 370203, 370204

Abstract:

Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a receiver configured to receive a waveform comprising a plurality of spectrally overlapping carrier signals from at least two of a plurality of remotes, the carrier signals are modulated using an inverse Fourier transform; a transmitter; a processor coupled to the transmitter, the processor outputs data for transmission to the transmitter, the processor applies an inverse Fourier transform to the data provided to the transmitter; a controller programmed to instruct the transmitter to transmit timing adjustments to the at least two of the plurality of remotes, the timing adjustments instruct the at least two of the plurality of remotes to adjust transmission timing so that transmitted symbols associated with frames of a predetermined multiframe structure are received in sequence from the at least two of the plurality of remotes based on the structure.