Institute of Electrical & Electronic Engineers
Spectrum sensing is key to the realization of dynamic spectrum access. To protect primary users' communications from the interference caused by secondary users, spectrum sensing must meet the strict detectability requirements set by regulatory bodies, such as the FCC. Such strict detection requirements, however, can hardly be achieved using PHY-layer sensing techniques alone with one-time sensing by only a single sensor. In this paper, the authors jointly exploit two MAC-layer sensing methods - cooperative sensing and sensing scheduling - in order to improve spectrum sensing performance, while incurring minimum sensing overhead.