Magnus H Berggren

US Patent:

6795512, Sep 21, 2004

Filed:

Nov 17, 2000

Appl. No.:

09/715877

Inventors:

Donald Brian Eidson - San Diego CA
Ramaswamy Murali - San Diego CA
Abraham Krieger - San Diego CA
Magnus H. Berggren - San Diego CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H04L 2706

US Classification:

375341, 375262

Abstract:

A system for carrier phase tracking of symbols. In an embodiment employing a feedback structure, a symbol derotator pre-rotates a symbol by a derotation phase. A symbol and reliability estimation engine provides, responsive to the pre-rotated symbol, an estimate of the symbol and a reliability metric for the estimate. A tracking loop module determines a residual between the pre-rotated symbol and the symbol estimate, weights the residual by the reliability metric for the estimate, and determines a phase offset estimate responsive to the weighted residual. An accumulator then determines a next derotation phase responsive to the phase offset estimate. In an embodiment employing a feedforward structure, a symbol and reliability estimation engine provides an estimate of a symbol and a reliability metric for the estimate. A tracking loop module determines a residual between the symbol and the symbol estimate, weights the residual by the reliability metric for the estimate, and determines a derotation phase responsive to the weighted residual.

US Patent:

6882690, Apr 19, 2005

Filed:

Sep 22, 2000

Appl. No.:

09/668231

Inventors:

Magnus H. Berggren - San Diego CA, US
Pranesh Sinha - San Diego CA, US
Itzhak Florentin - M.P. Misgav, IL

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H04L005/12

US Classification:

375265

Abstract:

A soft trellis slicer is provided in a high definition television (HDTV) receiver. The soft trellis slicer calculates a decision value and a confidence value corresponding to a phase angle error of a signal processed by the receiver. The receiver includes an equalizer, a phase tracking loop and a trellis decoder. The equalizer provides an equalized signal to the phase tracking loop; and the phase tracking loop calculates a phase angle error for the equalized signal. The trellis decoder calculates a decision value and a confidence value. The trellis decoder provides the decision value and the confidence value to the phase tracking loop, which calculates the reliability of the phase angle error based upon the phase angle error and the decision value and the confidence value provided by the trellis decoder. The trellis decoder calculates the decision value based upon a best path metric and calculates the confidence value based upon the best path metric and a second best path metric.

US Patent:

7231005, Jun 12, 2007

Filed:

Feb 14, 2003

Appl. No.:

10/368017

Inventors:

Donald Brian Eidson - San Diego CA, US
Ramaswamy Murali - San Diego CA, US
Abraham Krieger - San Diego CA, US
Magnus H. Berggren - San Diego CA, US

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H03D 1/00
H04L 27/06

US Classification:

375341, 375262, 375265, 714792, 714794, 714795

Abstract:

A method and apparatus for processing demodulated data comprising received symbol data is disclosed. A decoder is used to compute estimated symbols and corresponding reliability metrics. The reliability metrics are transformed into reliability weights. Optionally, residuals relating to the difference between the received symbol data and the estimated symbols are computed. Output data are generated comprising any combination of the following: estimated symbols, reliability weights, residuals, and received symbol data. The residuals may be weighted by the reliability metrics and used by demodulation or error compensation loops to instantaneously reduce or increase the bandwidth of these loops.

US Patent:

7594249, Sep 22, 2009

Filed:

Jul 21, 2001

Appl. No.:

09/910412

Inventors:

Itzhak Gurantz - San Diego CA, US
Ladd ElWardani - La Jolla CA, US
Anton Monk - San Diego CA, US
Brett Bernath - San Diego CA, US
Magnus Berggren - San Diego CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

H04N 7/18

US Classification:

725 78, 725 51, 725 54, 725 74, 725 80, 725 85, 725125, 725119, 725127

Abstract:

A local area network uses coaxial cable wiring for interconnection of terminal devices. A frequency selective network interface device is placed at the building point of entry or another point in the wiring to reflect network signals transmitted by terminal devices back into the building distribution to be received by other terminal devices. By reflecting network upstream signals back into the building as downstream signals, the network interface provides a path for terminal devices to transmit to and receive from other terminal devices.

US Patent:

8085802, Dec 27, 2011

Filed:

Dec 2, 2005

Appl. No.:

11/292939

Inventors:

Anton Monk - San Diego CA, US
Brett Bernath - San Diego CA, US
Itzhak Gurantz - San Diego CA, US
Ron Porat - San Diego CA, US
Yusuf Ozturk - San Diego CA, US
Ron Lee - San Diego CA, US
Magnus Berggren - San Diego CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

H04L 12/28

US Classification:

370419, 709203

Abstract:

A BCN network with BCN modems that communicate using predefined messages to establish, optimize and facilitate data communication.

US Patent:

8498294, Jul 30, 2013

Filed:

Dec 2, 2005

Appl. No.:

11/292947

Inventors:

Anton Monk - San Diego CA, US
Brett Bernath - San Diego CA, US
Itzhak Gurantz - San Diego CA, US
Ladd El Wardani - La Jolla CA, US
Ron Porat - San Diego CA, US
Yusuf Ozturk - San Diego CA, US
Ron Lee - San Diego CA, US
Magnus Berggren - San Diego CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

H04L 12/28

US Classification:

370392, 370445, 370465

Abstract:

A BCN network with BCN modems that communicate using predefined messages to establish, optimize and facilitate data communication.

US Patent:

8621539, Dec 31, 2013

Filed:

Sep 29, 2005

Appl. No.:

11/241748

Inventors:

Anton Monk - Del Mar CA, US
Ron Porat - La Jolla CA, US
Wee Peng Goh - Temecula CA, US
Magnus Berggren - San Diego CA, US
Ron Lee - San Diego CA, US
Edward Warner - San Diego CA, US
Brett Bernath - San Diego CA, US
Yusuf Ozturk - San Diego CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

H04N 7/173

US Classification:

725111, 725123, 725126, 725127

Abstract:

A physical layer transmitter that communicates between nodes in a broadband cable network by transmitting and receiving packets containing data and control information. Packets are constructed by the physical layer transmitter and transmitted to one or more receiving nodes that are capable of processing the packets. Packets are directed to specific nodes utilizing link layer control data. The packets may also contain control information that may include formatting, encoding and modulation parameters that are capable of being processed by the appropriate receiving nodes. The physical layer transmitter allows node-to-node communication within a broadband cable network and each node in the network is capable of communicating with every other node in the network.

US Patent:

8631450, Jan 14, 2014

Filed:

Sep 19, 2005

Appl. No.:

11/231349

Inventors:

Brett Bernath - San Diego CA, US
Anton Monk - San Diego CA, US
Itzhak Gurantz - San Diego CA, US
Ladd El Wardani - La Jolla CA, US
Ron Porat - San Diego CA, US
Yusuf Ozturk - San Diego CA, US
Ron Lee - San Diego CA, US
Magnus Berggren - San Diego CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

H04N 7/18
H04N 7/173

US Classification:

725 78, 725119, 725129, 725147

Abstract:

A BCN network with BCN modems that enable network wired devices to communicate over a typical home coaxial network that may include passive splitters and different types of coaxial cable.