Fernandez-Corbaton
Ivan Fernandez-Corbaton, San Diego, CA US
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20090305726 | Position Determination System That Uses A Cellular Communication System - A position determination system and apparatus for utilizing a network of cellular base stations to determine position of a mobile station includes taking a plurality of statistically independent data measurements of the pilot signals from the base stations. Each of the data measurements includes an earliest time of arrival, providing multiple independent measurements for each of the pilot signals. For each cellular base station, a representative measurement is calculated responsive to the independent measurements, which is used to determine position of the mobile station using an AFLT algorithm and/or in conjunction with a GPS algorithm. In some embodiments, the data measurements for each pilot signal further include an RMSE estimate and time of measurement for each time of arrival, and an energy measurement for all resolvable paths. If the mobile station comprises a cell phone, a cell search list and a GPS search list may be provided by a cell base station. | 12-10-2009 |
Ivan Jesus Fernandez-Corbaton, San Diego, CA US
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20100008453 | ANTENNA ARRAY PATTERN DISTORTION MITIGATION - At least one feature provides a way to perform point-to-multipoint transmissions using adaptive or directional antennas while reducing antenna pattern distortion. Generally, rather than transmitting the same waveform to two or more receivers, an information-bearing signal is transformed into different decorrelated waveforms and each decorrelated waveform is transmitted to a different receiver. In one implementation, an information-bearing signal is transformed into two decorrelated signals such that their crosscorrelation, or autocorrelation of the information-bearing signal, is zero or very small. Such decorrelation may be achieved by sending a first signal to a first receiver while sending a second signal, having a radio frequency spectrum that is the spectrally inverted version of the first signal, to a second receiver. In another implementation, a first signal is transmitted to a first receiver and is also transmitted to a second receiver with a time delay. | 01-14-2010 |
Ivan Jesus Fernandez-Corbaton, Nuernberg DE
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20080219374 | MIMO DETECTION WITH ON-TIME SYMBOL LEVEL INTERFERENCE CANCELLATION - Techniques for receiving a MIMO transmission are described. A receiver processes received data for the MIMO transmission based on a front-end filter to obtain filtered data. The receiver further processes the filtered data based on at least one first combiner matrix to obtain detected data for a first frame. The receiver demodulates and decodes this detected data to obtain decoded data for the first frame. The receiver then processes the filtered data based on at least one second combiner matrix and the decoded data for the first frame to cancel interference due to the first frame and obtain detected data for a second frame. The receiver processes this detected data to obtain decoded data for the second frame. The front-end filter processes non on-time signal components in the received data. Each combiner matrix combines on-time signal components in the filtered data to obtain detected data for a channelization code. | 09-11-2008 |
20090103497 | TRANSMISSION STRUCTURE SUPPORTING MULTI-USER SCHEDULING AND MIMO TRANSMISSION - Techniques for transmitting data in a manner to support multi-user scheduling, multiple-input multiple-output (MIMO) transmission, and interference cancellation are described. A base station assigns multiple time segments of a transmission time interval (TTI) to at least one terminal, maps data for each terminal to at least one time segment assigned to the terminal, and spreads the data in each time segment with at least one channelization code used in the TTI. A terminal receives an assignment of at least one time segment from among multiple time segments of the TTI, obtains input samples for the at least one time segment, and despreads the input samples with the at least one channelization code used in the TTI. | 04-23-2009 |
20110286353 | CQI REPORTING FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - Techniques for determining and reporting channel quality indicator (CQI) information are described. A user equipment (UE) may determine a transmit power per channelization code, P | 11-24-2011 |
20120087271 | SIGNALING OF POWER INFORMATION FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - Techniques for signaling power information to facilitate channel quality indicator (CQI) reporting are described. A Node B may send power information that may be used by a UE to determine a power per channelization code, P | 04-12-2012 |
Ivan Jesus Fernandez-Corbaton, Karlsruhe DE
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20140334433 | CQI REPORTING FOR MIMO TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - Techniques for determining and reporting channel quality indicator (CQI) information are described. A user equipment (UE) may determine precoding information and channel quality information to be reported to a base station. The UE may jointly encode the precoding information and the channel quality information to obtain coded data. The UE may send the coded data to the base station. | 11-13-2014 |