Patent application number | Description | Published |
20100081387 | SIGNAL DETECTION IN COGNITIVE RADIO SYSTEMS - A cognitive radio wireless device ( | 04-01-2010 |
20100197332 | TARGETED GROUP SCALING FOR ENHANCED DISTRIBUTED SPECTRUM SENSING - A method, wireless device, and information processing system dynamically update spectrum sensing groups in a wireless communication system. A set of wireless devices ( | 08-05-2010 |
20130083786 | METHOD AND APPARATUS FOR SYNCHRONIZATION IN A DYNAMIC SPECTRUM ACCESS (DSA) COGNITIVE RADIO SYSTEM - A method and apparatus for synchronization in a dynamic spectrum access system is provided herein. During operation a transmitter will vary a known sequence to generate a preamble for each radio frame. The variation of the known sequence is based on what particular subcarriers are currently being used by the transmitter. In one embodiment, the preamble is coupled to the filterbank multicarrier synthesis to generate an over-the-air preamble for use in synchronizing a receiver. | 04-04-2013 |
20130337761 | METHOD AND APPARATUS FOR IN-CHANNEL INTERFERENCE CANCELLATION - A communication device includes a receiver that is capable of canceling in-channel interference. The receiver includes an antenna for receiving a wireless signal comprising in-channel components and an out-of-channel component, wherein the in-channel components comprise a desired component and an in-channel interference component. A first filter of the receiver filters the wireless signal by blocking at least a portion of the out-of-channel component to produce a first signal comprising the in-channel components, and at least a second filter of the receiver filters the wireless signal by blocking at least a portion of the in-channel components to produce a second signal comprising the out-of-channel component. An in-channel interference estimator of the receiver generates an in-channel interference estimation signal based on the second signal. And a combiner of the filter combines the first signal and the second signal to at least partially cancel the in-channel interference component of the first signal. | 12-19-2013 |
20140064405 | METHOD AND APPARATUS FOR OUT-OF-CHANNEL EMISSION SUPPRESSION - A wireless communication device is provided that is capable of suppressing out-of-channel emissions. The wireless communication device includes an upsampled broadband multicarrier signal generator and multiple upsampled sidelobe signal generators. The upsampled broadband multicarrier signal generator receives a symbol stream and, based on the symbol stream, generates a broadband multicarrier signal comprising an in-channel signal and a first multiple out-of-channel sidelobes. Each upsampled sidelobe signal generator of the multiple upsampled sidelobe signal generators receives at least a portion of the symbol stream and, based on at least a portion of the symbol stream, generates an out-of-channel sidelobes to produce a second multiple out-of-channel sidelobes. The wireless communication device further includes a combiner that combines the broadband multicarrier signal and the second multiple out-of-channel sidelobes to at least partially suppress first multiple out-of-channel sidelobes of the broadband multicarrier signal. | 03-06-2014 |
20150310730 | METHODS AND SYSTEMS FOR PRESENTING PRIORITIZED INCIDENT CONTENT - Disclosed herein are methods and systems for presenting prioritized incident content. One embodiment takes the form of a method that includes receiving one or more status alerts from one or more public-safety devices associated with one or more public-safety responders. The method also includes correlating one or more of the received status alerts with one or more media sessions involving one or more of the public-safety responders. The method also includes prioritizing one or more of the media sessions based on prioritization criteria that includes the one or more status alerts correlated with those media sessions. The method also includes presenting one or more of the prioritized media sessions in a chronological view on respective user interfaces of one or more public-safety communication devices. | 10-29-2015 |