Patent application number | Description | Published |
20090052572 | Method and System for Transmitting Signals with Reduced Spurious Emissions - An RF power amplifier architecture minimizes spurious emissions by breaking the transmitted signal into narrow spectrum sub-bands, amplifying each separately, and then combining the signals for transmission purposes. | 02-26-2009 |
20100008313 | Method and System for Determining Spectrum Availability Within a Network - A method and transceiver for determining spectrum availability within a give area is disclosed. The given area includes cells in a grid. A belief evaluator receives a measurement from a signal and assigns an instantaneous belief indicator, an instantaneous disbelief indicator and an instantaneous ignorance indicator based on a detection threshold and the power level of the measurement. The indicators quantify the probability of a presence of a transmitter within the grid cell. A belief accumulator uses the instantaneous indicators along with accumulated belief, disbelief and ignorance indicators from previous measurements to determine cumulative belief, disbelief and ignorance indicators. The accumulated belief, disbelief and ignorance indicators are the results of previous measurements and belief/disbelief/ignorance determinations for the grid cell. An allocator indicates the status of the grid cell and whether a spectrum is available. If a spectrum is available, then the grid cell is added to other available cells within the area to generate the spectrum hole. | 01-14-2010 |
20100075704 | Method and System for Dynamic Spectrum Access Using Specialty Detectors and Improved Networking - Methods and systems for dynamic spectrum access (DSA) in a wireless network are provided. A DSA-enabled device may sense spectrum use in a region and, based on the detected spectrum use, select one or more communication channels for use. The devices also may detect one or more other DSA-enabled devices with which they can form DSA networks. A DSA network may monitor spectrum use by cooperative and non-cooperative devices, to dynamically select one or more channels to use for communication while avoiding or reducing interference with other devices. | 03-25-2010 |
20100097952 | Method and System for Classifying Communication Signals in a Dynamic Spectrum Access System - Methods and systems for dynamic spectrum access (DSA) in a wireless network are provided. A DSA-enabled device may sense spectrum use in a region and, based on the detected spectrum use, select one or more communication channels for use. The devices also may detect one or more other DSA-enabled devices with which they can form DSA networks. A DSA network may monitor spectrum use by cooperative and non-cooperative devices, to dynamically select one or more channels to use for communication while avoiding or reducing interference with other devices. | 04-22-2010 |
20100105332 | Method and System for Dynamic Spectrum Access Using Detection Periods - Methods and systems for dynamic spectrum access (DSA) in a wireless network are provided. A DSA-enabled device may sense spectrum use in a region and, based on the detected spectrum use, select one or more communication channels for use. The devices also may detect one or more other DSA-enabled devices with which they can form DSA networks. A DSA network may monitor spectrum use by cooperative and non-cooperative devices, to dynamically select one or more channels to use for communication while avoiding or reducing interference with other devices. | 04-29-2010 |
20100173586 | Method and System for Dynamic Spectrum Access - Methods and systems for dynamic spectrum access (DSA) in a wireless network are provided. A DSA-enabled device may sense spectrum use in a region and, based on the detected spectrum use, select one or more communication channels for use. The devices also may detect one or more other DSA-enabled devices with which they can form DSA networks. A DSA network may monitor spectrum use by cooperative and non-cooperative devices, to dynamically select one or more channels to use for communication while avoiding or reducing interference with other devices. | 07-08-2010 |
20120201330 | METHOD AND SYSTEM FOR TRANSMITTING SIGNALS WITH REDUCED SPURIOUS EMISSIONS - An RF power amplifier architecture minimizes spurious emissions by breaking the transmitted signal into narrow spectrum sub-bands, amplifying each separately, and then combining the signals for transmission purposes. | 08-09-2012 |
20120302190 | METHOD AND SYSTEM FOR MAN-MADE NOISE REJECTION DETECTOR - Methods and systems for dynamic spectrum access (DSA) in a wireless network are provided. A DSA-enabled device may sense spectrum use in a region and, based on the detected spectrum use, select one or more communication channels for use. The devices also may detect one or more other DSA-enabled devices with which they can form DSA networks. A DSA network may monitor spectrum use by cooperative and non-cooperative devices, to dynamically select one or more channels to use for communication while avoiding or reducing interference with other devices. A man-made noise rejection sub-system is used to permit signal detection while maintaining a low false alarm rate. | 11-29-2012 |
20130273957 | METHODS FOR USING A DETECTOR TO MONITOR AND DETECT CHANNEL OCCUPANCY - Methods for using a detector to monitor and detect channel occupancy are disclosed. The detector resides on a station within a network using a framed format having a periodic time structure. When non-cooperative transmissions are detected by the network, the detector assesses the availability of a backup channel enabling migration of the network. The backup channel serves to allow the network to migrate transparently when the current channel becomes unavailable. The backup channel, however, could be occupied by another network that results in the migrating network interfering with the network already using the backup channel. Thus, the detector detects active transmission sources on the backup channel to determine whether the backup channel is occupied. Methods for using the detector include scheduling detection intervals asynchronously. The asynchronous detection uses offsets from a reference point within a frame. | 10-17-2013 |
20140286360 | METHOD AND SYSTEM FOR TRANSMITTING SIGNALS WITH REDUCED SPURIOUS EMISSIONS - An RF power amplifier architecture minimizes spurious emissions by breaking the transmitted signal into narrow spectrum sub-bands, amplifying each separately, and then combining the signals for transmission purposes. | 09-25-2014 |
20150080044 | DISTRIBUTED SPECTRUM MONITOR - Systems and methods are provided for distributed monitoring of radio frequency electromagnetic spectrum using dedicated and/or opportunistic sensors and varying sensor tasking assignments to collect, and optionally process collected data, that is used in conjunction with previously stored data and/or a plurality of models such as propagation models, terrain models, etc. Spectrum usage is sensed at multiple locations to obtain spectrum data, and integrated the spectrum data to form an information product that can be provided to a requestor, such as a secondary user of a region of spectrum. | 03-19-2015 |