公开(公告)号：US20110228832A1

公开(公告)日：2011-09-22

申请号：US13048747

申请日：2011-03-15

申请人： Ruben De Francisco Martin

发明人： Ruben De Francisco Martin

IPC分类号： H04B17/00

CPC分类号： H04W72/02 ,  H04W16/14

摘要： A device and method for selecting a frequency channel of given bandwidth in a cognitive radio application is disclosed. In one aspect, the method includes evaluating, at one of a plurality of frequency bins, a function indicative of the frequency occupancy. If the evaluation result indicates free spectrum at the considered frequency bin, the previous step is repeated for a frequency bin adjacent to the considered frequency bin until the free frequency bins constitute a frequency channel of the given bandwidth. Otherwise, the method moves to select a next frequency bin to be considered. It is selected by calculating a measure of the left and right derivative of the function at the considered frequency bin, taking the measure of the left or right derivative as gradient approximation, and determining the next frequency bin by shifting the considered frequency bin over a frequency shift inversely proportional to the gradient approximation.

摘要翻译： 公开了一种用于在认知无线电应用中选择给定带宽的频率信道的设备和方法。 在一个方面，该方法包括在多个频率仓之一中评估指示频率占用的功能。 如果评估结果表示所考虑的频率仓上的自由频谱，则对于与所考虑的频率仓相邻的频率仓重复前一步骤，直到自由频率仓构成给定带宽的频道。 否则，该方法移动以选择要考虑的下一个频率仓。 通过计算在所考虑的频率仓上的函数的左右导数的度量来选择，以左或右导数的测量为梯度近似，并且通过将所考虑的频率仓在频率上移位来确定下一个频率仓 与梯度近似成反比。