Low bandwidth cooperative sequential spectrum sensing for cognitive radio systems
Many cognitive radio (CR) systems rely upon spectrum sensing techniques to determine whether an allocated spectrum is in use by licensed users. The technology is a method for cooperatively deciding whether a signal of interest is present using information from multiple sensor nodes (such as secondary users of a CR system). Each node employs a class of nonuniform samplers called event-triggered samplers that only need to asynchronously transmit a few bits to the unit that decides whether a signal of interest is present in order to enable it to make a final sensing decision. The low bandwidth requirements and rapid decision computation time of this method may improve resource utilization and power efficiency of CR systems and sensor networks.
Increases sensor network bandwidth efficiency.Reduces sensor network power requirements.Enables distributed detection decisions to be made almost as fast as with centralized (non-cooperative) detection schemes.Patent Information:Patent Pending (US 20150103958)Tech Ventures Reference: IR CU12251
Target detection for security or military purposes.Cooperative spectrum sensing in cognitive radio applications.Autonomous/off-grid sensor networks.
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