| 摘要 |
A cognitive wireless convergence center device includes a channel estimating unit, a sensing result receiving unit, and a final sensing determining unit. The channel estimating unit estimates upward link channel properties of each secondary user device by using upward link sounding signal received from multiple secondary user devices. The sensing result receiving unit simultaneously receives signal containing a spectrum sensing result of multiple secondary user devices. The final sensing determining unit determines an activity of a priority user device by referring to an upward link channel property estimated result and the spectrum sensing result received simultaneously. |
