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Low bandwidth cooperative sequential spectrum sensing for cognitive radio systems

Summary

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.

Technology Benefits

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

Technology Application

Target detection for security or military purposes.Cooperative spectrum sensing in cognitive radio applications.Autonomous/off-grid sensor networks.

Detailed Technology Description

None

*Abstract

None

*Inquiry

Satish RaoColumbia Technology VenturesTel: (212) 854-8444Email: TechTransfer@columbia.edu

*IR

CU12251

*Principal Investigator

*Publications

Y. Yilmaz, G.V. Moustakides, X. Wang. Cooperative Sequential Spectrum Sensing Based on Level-Triggered Sampling. IEEE Trans. on Signal Processing, Vol. 60, No. 9, Sep. 2012, pp. 4509-4524

Country/Region

USA