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Receiver-Centric Spectrum Sensing for Cognitive Radio Systems  

Shin, Oh-Soon (School of Electronic Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.48, no.2, 2011 , pp. 43-48 More about this Journal
Abstract
Cognitive radio is accepted as an effective and promising approach for resolving the spectrum scarcity problem by allowing secondary users to borrow unused spectrum from primary users. A method of identifying busy and empty spectrum at the given time and space, which is called spectrum sensing, constitutes an essential element of the cognitive radio. In this paper, we propose a receiver-centric spectrum sensing scheme which attempts to detect the primary receiver rather than the primary transmitter. It is shown that the proposed receiver-centric sensing approach results in more efficient spectrum utilization than the conventional transmitter-centric sensing.
Keywords
cognitive radio; spectrum sensing; receiver-centric; spectral efficiency;
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