Wideband Sequential Spectrum Sensing with Varying Thresholds
Paper in proceedings, 2010

In this contribution, time varying threshold sequential detectors are employed for energy detection-based spectrum sensing in low-SNR regimes. Sequential detection is proven to be faster (on average) than any other multi-sample detector for a set of given probabilities of detection and false-alarm. In this report, exact performance of a sequential detector for spectrum sensing is analyzed using the direct method. The theoretical results presented herein are verified with Monte-Carlo simulations. It is shown that for a SNR of −10 dB, among tests with Wald and triangular thresholds with similar probabilities of mis-detection and false-alarm, triangular performs 54% faster in terms of maximum detection time (90 percentile).

Sequential Analysis

Cognitive Radio

Spectrum Sensing

Sequential Probability Ratio Test

UWB and DAA

Author

Kasra Haghighi

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Erik Agrell

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Arne Svensson

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Proceedings IEEE Global Communications Conference, Wireless Communications Symposium, Miami, Florida, USA

5683988

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

DOI

10.1109/GLOCOM.2010.5683988

ISBN

9781424456383

More information

Latest update

3/29/2018