公开(公告)号：US20080291985A1

公开(公告)日：2008-11-27

申请号：US12125503

申请日：2008-05-22

申请人： Nikhil Adnani ,  Philip Vigneron ,  Colin Brown ,  Andre Louzada Brandao

发明人： Nikhil Adnani ,  Philip Vigneron ,  Colin Brown ,  Andre Louzada Brandao

IPC分类号： H04B1/38

CPC分类号： H04B1/406 ,  H03D3/006

摘要： The invention relates to a method and an apparatus for agile RF spectrum monitoring in a radio system with dynamic frequency access. It provides a spectrum monitor based on non-coherent heterodyne detection that utilizes a DDS signal generator to digitally generate a reference signal at a variable reference frequency for mixing with an input RF signal received from an RF antenna, a pass-band filter and a log amplifier for obtaining energy estimates at a monitored transmission frequency corresponding to the reference frequency. A processor is provided for adaptively selecting sets of monitored transmission frequencies, for controlling the DDS signal generator, and for processing obtained spectral energy estimates to assess spectral usage data.

摘要翻译： 本发明涉及具有动态频率接入的无线电系统中的敏捷射频频谱监测的方法和装置。 它提供了基于非相干外差检测的频谱监测器，其使用DDS信号发生器以可变参考频率数字地产生参考信号，以便与从RF天线接收的输入RF信号，通带滤波器和对数 放大器，用于在对应于参考频率的监视的传输频率上获得能量估计。 提供了一种处理器，用于自适应地选择监视的传输频率集合，用于控制DDS信号发生器，并且用于处理所获得的频谱能量估计以评估频谱使用数据。