Joint detection of primary systems using uwb impulse radios

Erkucuk S, Lampe L, Schober R (2011)

Publication Type: Journal article

Publication year: 2011

Journal

IEEE Transactions on Wireless Communications Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 10

Pages Range: 419-424

Article Number: 5675651

Journal Issue: 2

DOI: 10.1109/TWC.2011.122010.100990

Abstract

Regulation in Europe and Japan requires the implementation of detect-and-avoid (DAA) techniques in some bands for the coexistence of licensed primary systems and secondary ultra wideband (UWB) systems. In a typical coexistence scenario, a primary system may have potentially interdependent uplink-downlink communication channels (e.g., simultaneous uplink-downlink communications in a frequency division duplex system) overlapping with the frequency band of a UWB system. If such interdependencies of primary systems' activities are known, the UWB system's ability to detect primary systems can be improved. In this study, we are interested in determining the possible gains in the detection performance when taking interdependencies into account for practically implementable detection methods. Contrary to selecting the detection thresholds individually for each band as in a conventional detection approach, the bands are jointly processed. To this end, maximum a posteriori (MAP) decision variables are generated at the receiver, and bias terms are introduced to achieve a desired trade-off between the probabilities of detection and false alarm. In addition to finding the optimal detection results based on the Neyman-Pearson (NP) test, a suboptimal but practically implementable approach is also considered, and the gain compared to conventional independent detection is quantified for various practical scenarios. The results obtained from this study can be used for improving the primary system detection performance of UWB systems, as well as for cognitive radios that perform spectrum sensing in multiple bands. © 2011 IEEE.

Authors with CRIS profile

Robert Schober

Involved external institutions

Kadir Has University / Kadir Has Üniversitesi TR Turkey (TR) University of British Columbia CA Canada (CA)

How to cite

APA:

Erkucuk, S., Lampe, L., & Schober, R. (2011). Joint detection of primary systems using uwb impulse radios. IEEE Transactions on Wireless Communications, 10(2), 419-424. https://dx.doi.org/10.1109/TWC.2011.122010.100990

MLA:

Erkucuk, Serhat, Lutz Lampe, and Robert Schober. "Joint detection of primary systems using uwb impulse radios." IEEE Transactions on Wireless Communications 10.2 (2011): 419-424.

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