Albert Lamar Garrett

US Patent:

6748200, Jun 8, 2004

Filed:

Apr 4, 2003

Appl. No.:

10/407350

Inventors:

Mark A. Webster - Indian Harbor Beach FL 32937
Alex C. Yeh - West Melbourne FL 32904
Albert L. Garrett - Melbourne FL 32935

International Classification:

H04B 106

US Classification:

4552341, 4552321, 455324, 455296, 4552342, 375345

Abstract:

A system and method for controlling amplification of a signal received by a ZIF radio having a power level within a full power range relative to a minimum noise floor. The ZIF radio includes a ZIF receiver front end, an overload detector, an ADC, a saturation detector, a DC and power estimator, and control logic. The control logic utilized full visibility of the ADC to limit gain of the baseband amplifier to a maximum gain setting sufficient to view the minimum noise floor and to view a received signal having a power level within any of several segments of the power spectrum. The segmentation of the power spectrum is based on an overload condition of the ZIF receiver front end and a saturation condition of the ADC. The control logic further employs limited gain stepping of the baseband amplifier to avoid exceeding a DC budget of the ADC.

US Patent:

6973296, Dec 6, 2005

Filed:

Dec 4, 2001

Appl. No.:

10/011794

Inventors:

Mark A. Webster - Indian Harbour Beach FL, US
Paul J. Chiuchiolo - Melbourne FL, US
Albert L. Garrett - Melbourne FL, US

Assignee:

Intersil Americas Inc. - Irvine CA

International Classification:

H04B001/10

US Classification:

455296, 455130, 455283, 455285

Abstract:

A wireless receiver including a receive chain, a synchronization processor, a memory, a combiner and a soft decision processor. The synchronization processor determines a frequency response of the wireless channel using synchronization data transmitted in the wireless channel. The memory stores a compensation vector indicative of a frequency response of receive chain filtering. The combiner combines the compensation vector with the wireless channel frequency response to provide a compensated frequency response. The soft decision processor uses the compensated frequency response to evaluate data decisions. The compensation vector is based on measurement or estimation of the frequency response of the receive chain. The combiner may be based on multiplication or addition. The wireless receiver may include an FEQ.

US Patent:

7174138, Feb 6, 2007

Filed:

Aug 23, 2004

Appl. No.:

10/922985

Inventors:

Mark A. Webster - Indian Harbour Beach FL, US
Albert L. Garrett - Melbourne FL, US
Steven D. Halford - Palm Bay FL, US

Assignee:

Conexant Systems, Inc. - Red Bank NJ

International Classification:

H03C 7/02
H04B 1/02
H04B 7/02

US Classification:

455101, 4552772, 375347

Abstract:

A power-based hardware antenna diversity method for a wireless transceiver with multiple antennas is disclosed. The method is characterized in the steps of setting the transceiver gain at a maximum level to establish a first story of dynamic power range above a noise floor level, using a high-resolution ADC at a large back-off level relative to the noise floor to detect weak signals within the first story of the dynamic power range, switching antennas and measuring power level for each antenna during signal onset, and selecting an antenna having a largest power level.

US Patent:

7272109, Sep 18, 2007

Filed:

Aug 27, 2004

Appl. No.:

10/927487

Inventors:

Mark A. Webster - Indian Harbour Beach FL, US
Albert L. Garrett - Melbourne FL, US
Steven D. Halford - Palm Bay FL, US
Michael J. Seals - Melbourne FL, US

Assignee:

Conexant Systems, Inc. - Red Bank NJ

International Classification:

H04J 11/00
H04K 1/10
H04L 27/28

US Classification:

370208, 370343, 370295, 370203, 370344, 370480, 375260

Abstract:

A 10 MHz channelized orthogonal frequency division multiplexing (OFDM) transmitter is provided that communicates using a modified OFDM packet structure with a half-rate oscillator having standard accuracy. The transmitter has an inverse fast fourier transform (IFFT) data processor that appends an outer pair of data subcarriers on either end of an OFDM subcarrier profile. An IFFT long sync processor appends an outer pair of binary phase shift key (BPSK) subcarriers on either end of an OFDM long sync subcarrier profile. By copying or appending the information of the data subcarriers closest to zero Hz. to more robust locations, 10 MHz channelized OFDM can be achieved with half-rate clocks and 20 PPM oscillators.

US Patent:

RE43367, May 8, 2012

Filed:

Feb 5, 2009

Appl. No.:

12/322659

Inventors:

Mark A. Webster - Indian Harbour Beach FL, US
Albert L. Garrett - Gadsden AL, US
Steven D. Halford - Palm Bay FL, US

Assignee:

Intellectual Ventures I LLC - Wilmington DE

International Classification:

H03C 7/02
H04B 1/02
H04B 7/02

US Classification:

455101, 4552772, 375347

Abstract:

A power-based hardware antenna diversity method for a wireless transceiver with multiple antennas is disclosed. The method is characterized in the steps of setting the transceiver gain at a maximum level to establish a first story of dynamic power range above a noise floor level, using a high-resolution ADC at a large back-off level relative to the noise floor to detect weak signals within the first story of the dynamic power range, switching antennas and measuring power level for each antenna during signal onset, and selecting an antenna having a largest power level.

US Patent:

8351368, Jan 8, 2013

Filed:

Oct 3, 2008

Appl. No.:

12/245498

Inventors:

Rahul Malik - Bangalore, IN
Vipin Aggarwal - Irvine CA, US
Albert Garrett - Gadsden AL, US
Etan Cohen - San Francisco CA, US
Cimarron Mittelsteadt - Saugus CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

H04B 7/185
H04B 7/204
H04J 1/00

US Classification:

370318, 370319, 370480

Abstract:

A technique for communicating multimedia data between nodes over coaxial cable, wherein the nodes are connected via a coaxial cable network, is disclosed. In an embodiment, the technique involves establishing a primary channel for communicating between first and second nodes of the coaxial cable network, establishing a secondary channel for communicating between the first and second nodes of the coaxial cable network, wherein the primary and secondary channels are in different frequency bands and wherein the primary channel is used for communicating media access control frames, and communicating a time series of data frames between the first and second nodes using both the primary channel and the secondary channel.

US Patent:

8468223, Jun 18, 2013

Filed:

Nov 11, 2009

Appl. No.:

12/616333

Inventors:

Albert L. Garrett - Gadsden AL, US
Jeffrey Scott Ford - Madison AL, US
Jack Thomas Matheney - Madison AL, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 15/177
G06F 15/16

US Classification:

709221, 709236

Abstract:

Embodiments may be disclosed herein that provide systems, devices, and methods of operating a Multimedia over Coax (MoCA) network. One such embodiment is a method comprising: designating a selected MoCA device as a network controller; and logically partitioning, into virtual MoCA networks, a predetermined bandwidth reserved for the MoCA network by sending, from the network controller one or more beacons containing virtual network information.

US Patent:

8547833, Oct 1, 2013

Filed:

May 13, 2011

Appl. No.:

13/107555

Inventors:

Albert L. Garrett - Gadsden AL, US
Jack Thomas Matheney - Madison AL, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 1/00

US Classification:

370229, 370252

Abstract:

A method can include calculating an indication of signal quality for a communications channel based on a message from a node over a communications channel of a network. The calculated indication of signal quality can be adjusted based on a prior indication of signal quality to provide an adjusted indication of signal quality. Bitloading for the communications channel can be determined based on the adjusted indication of signal quality.