Da Silveira
Celso Da Silveira, Herndon, VA US
Patent application number | Description | Published |
---|---|---|
20140236884 | ANALYSIS OF DATASETS WITHOUT PREDEFINED DIMENSIONS - Embodiments of systems, methods, and computer-readable mediums for analysis of datasets without predefined dimensions are generally described herein. In some embodiments, analysis of datasets without predefined dimensions may include receiving a selection of multiple dimensions of information from a database to be used for data analysis; receiving a selection for a type of report; and dynamically generating a query statement based on the selection of the multiple dimensions. Further embodiments may include the dynamically generated query statement including multiple iterative join clauses as a function of the selected dimensions; executing the query statement against an in-memory database; and displaying columns of information obtained from execution of the query statement. | 08-21-2014 |
Gabriel Antonio Da Silveira, Joinville BR
Patent application number | Description | Published |
---|---|---|
20100038019 | PROCESS FOR OBTAINING PIPES AND JOINTS FROM A POLYMER COMPOSITE - A “PROCESS FOR OBTAINING PIPES AND JOINTS FROM A POLYMER COMPOSITE” comprising an inner pipe ( | 02-18-2010 |
Jorni Santana Da Silveira, Rio De Janeiro BR
Patent application number | Description | Published |
---|---|---|
20130031597 | METHOD AND EQUIPMENT FOR SECURITY ISOLATION OF A CLIENT COMPUTER - A method and equipment to protect the client computer against attacks through a device that carries out the security isolation of the client computer. It includes isolating all kinds of media that allow for writings in the computer. It uses security software, such as Firewall and antivirus programs configured according to the company's needs and also software to access the company's server, such as a browser or its own software. | 01-31-2013 |
Marthinus Da Silveira, Ottawa CA
Patent application number | Description | Published |
---|---|---|
20100272089 | METHOD AND APPARATUS FOR PROCESSING MULTIPLE COMMON FREQUENCY SIGNALS THROUGH A SINGLE CABLE USING CIRCULATORS - A method and apparatus for processing multiple signals at a common frequency combined into a single radio frequency cable and subsequently recovering the signals without significant losses, distortion, or cross-talk. The method and apparatus includes processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g., the number of sectors) amplified by the single power amplifier. This invention enables a single power amplifier to simultaneously provide all the radio frequency signals necessary to feed a general N input phased array antenna system and form multiple antenna beams uniquely for several individual users simultaneously. | 10-28-2010 |
Marthinus W. Da Silveira, Ottawa CA
Patent application number | Description | Published |
---|---|---|
20130207843 | DETERMINATION OF AN IMPAIRMENT COMPENSATION MATRIX FOR AN ANTENNA ARRAY - Determination of an impairment compensation matrix for compensation of impairments in an antenna array is disclosed. A plurality of different combinations of multi-signal transmissions which form at least one null at a respective location of a plurality of locations is determined. Each combination includes a multi-signal transmission that comprises at least two concurrent signal transmissions from at least two antenna subarrays of N antenna subarrays and the respective location. Based on signal characteristics associated with the plurality of different combinations of multi-signal transmissions and an expected signal reception at the plurality of locations, an impairment matrix that identifies an effect of impairments among the N antenna subarrays is determined. The impairment compensation matrix is determined based on the impairment matrix. | 08-15-2013 |
Marthinus Willem Da Silveira US
Patent application number | Description | Published |
---|---|---|
20130266082 | FREQUENCY-DOMAIN PEAK POWER REDUCTION - A system and method are provided for frequency domain peak power reduction on a plurality of orthogonal frequency divisional multiplexing (OFDM) signals in a communications system, wherein frequency domain processing of at least one OFDM signal carrier is iteratively performed to reduce peak power transmissions. OFDM signal carriers can include both in-band sub-carrier signals, and guard-band sub-carrier signals. Each iteration of peak power reduction takes as an input the frequency domain representation of the signal from the previous iteration that has been altered with respect to an error signal also represented in the frequency domain, determines an error signal (in the frequency domain), and subtracts this from the input to produce a further peak power reduced frequency domain signal. If there are no peaks above the configured peak power reduction threshold, then the signal passes through the FPPR iterations with no change. | 10-10-2013 |
Marthinus Willem Da Silveira, Nepean CA
Patent application number | Description | Published |
---|---|---|
20140133470 | ANTENNA ARRAY CALIBRATION USING TRAFFIC SIGNALS - An antenna array of a base station is calibrated using outbound traffic signals. The antenna array includes a number of sub-arrays. A combiner in the antenna array combines the outbound traffic signals in the sub-arrays into a feedback signal. The outbound traffic signals are captured simultaneously for use as reference signals before the outbound traffic signals enter transmit paths in a radio unit of the base station. Each of the reference signals is one of the outbound traffic signals that is to be transmitted via one of the sub-arrays. An impairment estimator of the base station estimates the impairment for each of the outbound traffic signals based on the feedback signal and the reference signals. An approximate inverse of the impairment estimation is applied to the outbound traffic signals by a number of equalizers before the outbound traffic signals enter the transmit paths. | 05-15-2014 |
20140133543 | Method and Apparatus For Antenna Array Calibration Using Traffic Signals - An antenna array of a base station is calibrated using outbound traffic signals. The outbound traffic signals are captured for use as reference signals before the outbound traffic signals enter transmit paths in a radio unit of the base station. The outbound traffic signals are captured for use as a feedback after the outbound traffic signals exit the transmit paths. Each of the reference signals is one of the outbound traffic signals to be transmitted. An impairment estimator estimates the impairment for each of the outbound traffic signals based on the feedback signal and the reference signals. For each transmit path, a set of weights of an all-pass filter is determined, where the all-pass filter has a frequency response that approximates the impairment estimation in an occupied frequency region where reference signal power is above a threshold. The set of weights is inversed to obtain equalizer taps for each of the transmit paths. | 05-15-2014 |
Marthinus Willem Da Silveira, Ottawa CA
Patent application number | Description | Published |
---|---|---|
20120064848 | Low Sample Rate Peak Power Reduction - Peak power reduction in transmit chains of radiocommunication devices is performed using a low sample rate. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path. | 03-15-2012 |
20120320948 | MULTI-CARRIER PEAK POWER REDUCTION IN FREQUENCY HOPPING SYSTEMS - Peak power reduction in transmit chains of frequency hopping, multi-band radiocommunication devices is performed. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path. Alternatively, a sufficiently high sample rate can be used in support of error signal generation. | 12-20-2012 |
20130315320 | Multi-Carrier/Technology Peak Power Reduction - Disclosed is a system and method for peak power reduction on a plurality of frequency domain orthogonal frequency divisional multiplexing (OFDM) signal carriers and a plurality of time domain signal carriers in a communications system. The system includes a plurality of frequency domain carrier processing blocks configured to iteratively perform frequency domain processing of at least one frequency domain OFDM signal carrier to reduce peak power transmission and a plurality of time domain carrier processing blocks configured to iteratively perform time domain processing of at least one time domain signal carrier to reduce peak power transmission, wherein the system is further configured to perform the frequency domain processing and time domain processing substantially simultaneously, thereby spreading excess peak power to one or more of the plurality of frequency domain OFDM signal carriers and to one or more of the plurality of time domain signal carriers. | 11-28-2013 |
20140153666 | DISTRIBUTED DIGITALLY CONVERTIBLE RADIO (DDCR) - Embodiments of a hybrid unit that supports a configurable number of radio units for a base station in a cellular communications network and embodiments of Distributed Digitally Convertible Radio Units (DDCRUs) for use with the hybrid unit are disclosed. In one embodiment, a hybrid unit for a base station in a cellular communications network is provided. The hybrid unit includes an analog hybrid matrix. The analog hybrid matrix includes a number of feeder ports operative to connect to at least one radio unit and up to a number of radio units that are external to and separate from the hybrid unit. In one preferred embodiment, the radio unit(s) is(are) DDCRU(s). The analog hybrid matrix also includes a number of antenna ports operative to connect to at least one and up to a corresponding number of antennas of the base station. | 06-05-2014 |
20140177563 | Symbol FFT RACH Processing Methods and Devices - Methods and devices for extracting a RACH preamble using as input a number of Fast Fourier Transformed symbols, in order to extract a random access channel (RACH) preamble from a signal received in a base station from a user device, in a radio communication system, are provided. An initial cyclic prefix (symbol CP) is removed prior to performing FFT on symbols. After (1) selecting from the FFT of a symbol frequencies corresponding to the RACH band all other non-RACH frequency bins having been set to zero, (2) shifting the signal to baseband and (3) performing a FFT on the baseband signal, a phase adjustment is performed to compensate for group delays due to symbol CP gaps occurring when generating the baseband signal, the phase adjustment being determined individually for each symbol. | 06-26-2014 |
Nilton Da Silveira, Porto Alegre - Rs BR
Patent application number | Description | Published |
---|---|---|
20130000171 | PISTOL WITH FIRING MECHANISM THAT CAN EASILY BE ADAPTED TO VARIOUS MODES OF OPERATION - A basic device for a pistol, intended to work in the DAO mode of operation and easily adaptable to other operation modes, is disclosed. The pistol has a rod, including in an edge opposed to a trigger, a stick and a crosswise arm. The crosswise arm is projected from the lengthwise body of the rod, toward the central portion of the pistol, and includes a front surface, able to mechanically interfere with a tongue, and a wing, frontal to the crosswise arm and projecting downwards, in which middle region an oblong opening is included; a guiding pin for the rod. The guiding pin of the rod crosses the oblong opening of the wing of the crosswise arm, so to limit the movement of the crosswise arm upwards and downwards; and a rod ramp. A pistol for actuation in SA mode is also disclosed. | 01-03-2013 |