认知无线电关键技术研究

讨论目前认知无线电频谱的两个重要技术—感知和预测。针对感知无线通信环境下,根据一定的学习和决策算法,实时自适应地改变系统工作参数,动态检测和有效利用空闲频谱,仿真表明,理论上允许在时间、频率以及空间上进行多维的频谱复用,可大大降低频谱和带宽限制,以及对无线技术发展的束缚

The Key Technology of Cognitive Radio

The two important techniques in the understanding of the radio spectrum,perception and prediction is discussed.The system operating parameters are changed in real time adaptively according to certain learning and decision-making algorithms for the wireless communication environment for perception to dynamically detect and effectively use the free spectrum.Studies show that in theory multidimensional spectrum reuse in time,frequency and time is allowed,and thus the frequency spectrum and bandwidth constraints and the constraints on the development of the wireless technology are greatly reduced