Acta Metallurgica Sinica(English letters) ›› 2008, Vol. 15 ›› Issue (3): 1-7.doi:
• Wireless • 下一篇
陈星;别智松;吴伟陵
CHEN Xing, BIE Zhi-song, WU Wei-ling
摘要：
Sensing the spectrum in a reliable and efficient manner is crucial to cognitive radio. To combat the channel fading suffered by the single radio, cooperative spectrum sensing is employed, to associate the detection of multiple radios. In this article, the optimization problem of detection efficiency under the constraint of detection probability is investigated, and an algorithm to evaluate the required radio number and sensing time for maximal detection efficiency is presented. To show the effect of cooperation on the detection efficiency, the proposed algorithm is applied to cooperative sensing using the spectral correlation detector under the Rayleigh flat fading channel.
