University of Kansas

Hughes Network Systems, LLC

Crititech, Inc.

Hughes Electronics Corporation

Archer Daniels Midland Company

Center for Research, Inc.

Bala Subramaniam

Daryle Hadley Busch

Yanlai Liu

Roger A Rajewski

Raghunath V Chaudhari

Sri Bhat

Andrew M Danby

Said Saim

Greg Johnson

Fenghui Niu

Stanley Edward Kay

Thomas P Binder

Anand Ramanathan

Jahna Espinosa

Liming Qin

Jacob M Sittenauer

Brandon Lasher

Debdut S Roy

Valentino J Stella

Bassel F Beidas

Yezdi F Antia

Joseph S Farthing

Santharam Gurumani

Olga Ritterbush

Tie-Pan Shi

Ming Wei

Mustafa Eroz

David Richard Corbin

Hong Jin

Padmesh Venkitasubramanian

Liping Chen

Chad Johnson

John E Corrigan, Iii

Charles J Decedue

Kumud Patel

Anindya Ghosh

Bhuma Rajagopalan

Donald Stuart Arnstein

Mark Brandon Shiflett

Richard Clewer

Harry M Johnson

Gary E Clapp

Richard S Givens

James Lykins

J Mark Steber

Prachi Raikar

Daryle H Busch

Hyun-Jin Lee

Ghezai T Musie

Michael D Lundin

Michael C Clark

Jon Tunge

Madhav Ghanta

Daryle Busch

Paul E LaCasse

Andrew S Borovik

Alexei Duhovich

David J Bochniak

Jon D Snyder

Srilekha Bhat

Steffan Green

Suchita Sahu

Hongda Zhu

Julian R Silverman

Ranjan Jana

Christopher James Lyon

Gregory F Johnson

William K Snavely

Xin Jin

Kakasaheb Y Nandiwale

Matt Butehorn

Xiaobin Zuo

Fenghul Niu

Fenhui Niu

Wenjuan Yan

Jing Fang

Bibhas Sarkar

Jeffrey M Jonas

Katherine F Terranova

Chi Cheng Ma

Said Said

Katherine Fern Terranova

Jon A Tunge

Jahna C Espinosa

Greg S Johnson

Padmesh Venkitasubramaniam

Digital pre-distorter (DPD) coefficients can be used to compensate for non-linearity of a power amplifier (PA). A system can receive a defined waveform from transmit hardware. The system can transmit an output waveform with a defined modulation from the PA. The system can capture samples of the output waveform. The system can submit the samples to a processing system temporarily connected to a transmitter system. The system can compute a PA model using the defined waveform and the samples. The system can determine a plurality of Digital Pre-Distorter (DPD) coefficients for a plurality of power levels, frequencies, and temperatures based on the PA model. The system can store the plurality of DPD coefficients to a memory of the transmitter system. Additionally, the system can add predistortions using the plurality of DPD coefficients to a plurality of input waveforms to correct for impairments introduced by the PA.

External digital pre-distorter coefficient computation for power amplifier nonlinearity compensation

Methods of forming lignin prepolymers are provided. In an embodiment, such a method comprises adding an acid to an ozonized reaction mixture, the ozonized reaction mixture comprising ozonized lignin having a backbone, and aromatic monomers cleaved from a lignin, under conditions to react the cleaved aromatic monomers with the backbone of the ozonized lignin to form a lignin prepolymer. The methods may further comprise using the lignin prepolymer to form a lignin resin.

Methods for forming lignin prepolymers and lignin resins

Bimetal-incorporated mesoporous silicate catalysts are provided. In embodiments, such a catalyst comprises a silicate lattice, a first transition metal M, and a second transition metal M', wherein M and M′ are selected from Zr, Nb, and W and are directly incorporated into the silicate lattice such that M and M′ replace Si atoms. Methods of using the catalysts are also provided, including in methods for dehydrating alcohols. Methods of making the catalysts are also provided.

Bimetal-incorporated mesoporous silicates for alcohol dehydration and related methods

The disclosure relates to bit-interleaved coded modulation with iterative decoding. In some implementations, a receiver comprises: a first memory including multiple first sub-memories; a decoder configured to perform first operations comprising: calculating, first extrinsic information of multiple code bits associated with multiple received symbols; and a demapper configured to perform second operations comprising: calculating soft decision information of the code bits; calculating, based on the soft decision information and the first extrinsic information, second extrinsic information of the code bits; and writing the second extrinsic information of the code bits into the first memory such that, for each received symbol, each sub-memory of the first sub-memories respectively stores the second extrinsic information associated with a respective one of the code bits corresponding to the received symbol.

Bit interleaved coded modulation-iterative decoder for high-speed receiver

A Finite Impulse Response (FIR) filter that reduces the complexity of the hardware required for a filter with a high decimation factor while achieving similar performance of prior art poly-phase filters of greater complexity. The FIR filter includes a small number of multiply-and-accumulate (MAC) units connected in parallel to each other between an input stream and an output stream. The MAC units are provided with coefficients from a memory. In an example implementation, the memory is addressed by a counter and the output of the memory selected by a multiplexer for suppling the coefficients.

High-rate decimation filter with low hardware complexity

Provided are processes for producing metal oxides, including pigmentary TiO. In embodiments, a process for producing a metal oxide comprises combining a metal halide and an oxidant in a liquid phase medium under conditions to oxidize the metal halide in the liquid phase medium to produce a metal oxide therefrom.

Processes for the production of metal oxides

Techniques are described for pre-equalization at the demodulator of a satellite receiver terminal to compensate for forward link distortions. Some satellite channel filters can manifest distortions, such as asymmetric group delay response. Such distortions can conventionally force restriction of symbol rate only to the portion of the channel bandwidth having a symmetric filter response. Embodiments include a pre-equalizer in the demodulation path that filters received downlink communications based on a set of pre-equalizer filter coefficients computed to at least partially compensate for the channel filter distortions. Some embodiments support updating the filter coefficients based on channel reassignments, and/or dynamically updating the filter coefficients based on detecting and exploiting pre-equalization frames. The pre-equalized sample stream can facilitate reliable decoding by the demodulator with an appreciably increased symbol rate and correspondingly increased forward link capacity.

Pre-equalizer at the terminal to compensate for forward link distortions

A receiver and method for compensating for linear impairments at a receiver including receiving an Rx signal including an asymmetric response of a satellite filter; pre-equalizing the Rx signal with a coefficient; and demodulating, after the pre-equalizing, the Rx signal.

Satellite receiver including pre-equalizer to compensate for linear impairments

A system comprises a computer having a processor and a memory, the memory storing instructions executable by the processor to identify data to be communicated to a satellite gateway via a satellite, the data including first data and second data, determine to communicate the data to the satellite gateway in a time-division multiplexing (TDM) and time-division multiple access (TDMA) (TDM/TDMA) concurrent transmission mode, and responsive to the determination to communicate the data to the satellite gateway in the TDM/TDMA concurrent transmission mode, transmit the first data to the satellite according to a TDM channel access scheme and transmit the second data to the satellite according to a TDMA channel access scheme that differs from the TDM channel access scheme.

TDM and TDMA concurrent mode transmission

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for channel bonding in an adaptive coding and modulation mode. In some implementations, a system receives packets of a data stream for transmission in a satellite communications system. The system determines a modulation and coding arrangement for the received packets. The system generates code blocks that include data from the packets of the data stream. The system assigns the generated code blocks for transmission on different carriers. One or more of the different carriers is operated in an adaptive coding and modulation mode to support multiple modulation and coding arrangements within a single carrier. The system transmits the code blocks on the different carriers using the determined one or more modulation and coding arrangements.

Channel bonding in an adaptive coding and modulation mode

The present disclosure provides an apparatus and methods of use for isolating particles. An example apparatus includes (a) a vessel defining a pressurizable chamber, wherein the vessel includes a distal end and a proximal end, (b) an inlet of the pressurizable chamber at the proximal end of the vessel, (c) a nozzle positioned within the pressurizable chamber, wherein the nozzle includes an inlet tube in fluid communication with the inlet of the pressurizable chamber, wherein the nozzle includes an outlet aperture, wherein the nozzle is adjustable to alter a distance between the proximal end of the vessel and the outlet aperture of the nozzle, and wherein the nozzle is adjustable to alter an angle between a longitudinal axis of the vessel and a longitudinal axis of the nozzle, and (d) an outlet of the pressurizable chamber at the distal end of the vessel.

Nozzle assembly and methods for use

Systems and methods for ACM trajectory include receiving data at a communications receiver; decoding the received data based on a selected MODCOD; monitoring a number of iterations used to decode the data using the selected MODCOD; comparing the number of iterations used to decode the data using the first selected MODCOD to a reference number of iterations; and adjusting a SNR threshold value for the selected MODCOD where the number of iterations used to decode the data using the first selected MODCOD is greater than the reference number of iterations.

Optimized ACM trajectory systems and methods

In a first aspect, the present invention is directed to a process for forming a metal alloy catalyst. Another aspect of the present invention is directed to a process for oxidizing a substrate that includes contacting a substrate with an oxidant in the presence of a metal alloy catalyst to form one or more carboxylic acids. Suitable substrates include sugars, polyols, furfural alcohols, and polyhydroxycarboxylic acids. The oxidation process may use the alloy catalyst formed from the process of the first aspect of the invention.

Methods of forming and using metal alloy oxidative catalysts

A deinterleaver device, a method for deinterleaving, an interleaver device, and a method for interleaving are disclosed. The method for deinterleaving includes: providing a memory and a stream count for a frame; virtually dividing the memory into equal sections, wherein a section count equals the stream count; calculating a write address for a sample of the samples based on a location of the sample in the frame and a correspondence of the location to one of the sections; receiving the sample; and writing the received sample to the write address, wherein the calculating and the write address corresponds to a correct deinterleaving location in one of the sections for the sample.

High speed interleaver/deinterleaver device supporting line rate, and method thereof

Growing community of inventors

Lawrence, KS, United States of America

Bala Subramaniam