Gollakota
Manorama Gollakota, Rancho Palos Verdes, CA US
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20090016414 | Ultratight coupling prefilter detection block - An observation lock detector block receives I&Q correlations and generates error measurement vectors, each including phase, frequency, code, pseudorange, and covariance residual estimates, and generates validity indicator and confidence indicator vectors, one of which error measurement vectors is an output as a selected error measurement vector with a respective validity indicator and confidence indicator vector, both of which selected vectors are communicated to a navigation solution processor in a ultratightly coupled navigation system for providing improved estimations of a navigation solution, the indicators indicating the usefulness of measurement errors, the prefilter detector block comprising discriminators, sequential filters, observation lock detectors and a measurement selector for selecting measurement vector based on phase, frequency, and code discriminations, the measurement errors being residual estimates that are indicated as valid or invalid for dynamic propagation of the residuals in a navigation receiver for improved performance, especially in low signal-to-noise environments, such as, for use in an ultratight GPS navigation system. | 01-15-2009 |
Shyamnath Gollakota, Cambridge, MA US
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20130028305 | CROSS TECHNOLOGY INTERFERENCE CANCELLATION - In one aspect, a method for mitigating an effect of an interfering radio signal at a multiple antenna receiver includes forming an estimate of a relationship of the interfering signal among signals received from the multiple antennas. In general, the interfering signal does not share the same communication technology as a desired signal. The signals received from the multiple antennas filtered and combined according to the estimate of the relationship of the interfering channels to reduce an effect of the interfering signal. Desired data present in the desired signal represented in the filtered and combined signals is decoded and the estimate of the relationship of the interfering signals is updated according to the decoding of the desired signal. | 01-31-2013 |
Shyamnath Gollakota, Seattle, WA US
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20130064114 | RANDOM ACCESS HETEROGENEOUS MIMO NETWORK - A number of techniques, which may be used together, provide distributed coordination of multiple stations so that concurrent transmissions and increased throughput are achieved on a shared radio medium. Each of the techniques provides a separate innovation that can be used alone or in combination with one or more of the other techniques. | 03-14-2013 |
20140204776 | Dynamic Adaption of Transmission Rate for Multiuser MIMO Networks - Dynamic adaption of transmission rate for multiuser MIMO networks is disclosed. The invention controls a first communication device to transmit data at rates optimal determined under the condition that the channel is occupied by the first communication device, a second communication device to transmit data at rates optimal determined under the condition that the channel is shared by the first and second communication devices and a third communication to transmit data at rates optimal determined under the condition that the channel is shared by the first, second and third communication device. | 07-24-2014 |
Subha U. Gollakota, Cupertino, CA US
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20130203442 | Location-Based Methods, Systems, and Program Products For Performing An Action At A User Device. - Methods, program products, and systems for location-based reminders are disclosed. A first user device can receive an input specifying that a reminder be presented at a given location. The first user device can provide a reminder request, including type and content of the reminder and the location, to a server computer for pushing to one or more user devices. A second user device, upon receiving the reminder request, can determine a device location of the second user device. If the given location matches the device location, the second user device can present the reminder in a user interface. | 08-08-2013 |